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Table of Physical Properties for Hydrocarbons and Other Compounds of Interest to the Natural Gas and Natural Gas Liquids Industries (Includes data previously published in Technical Publication TP-17, Table of Physical Properties of Hydrocarbons for Extended Analysis of Natural Gases) Adopted as a Standard 1942 Revised 2016 GPA Midstream Association Sixty Sixty American Plaza, Suite 700 Tulsa, Oklahoma 74135 GPA Midstream Standard 2145-16 Copyright Gas Processors Association Provided by IHS under license with GPA Licensee=Repsol Site 19-20/5982486004, User=Miller, Barb Not for Resale, 06/20/2016 13:42:46 MDT No reproduction or networking permitted without license from IHS --`,``,``,`````,,``,,,``,,`,,,`,-`-`,,`,,`,`,,`---

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Page 1: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

Table of Physical Properties for Hydrocarbons and Other Compounds of Interest to the

Natural Gas and Natural Gas Liquids Industries

(Includes data previously published in Technical Publication TP-17, Table of Physical Properties of Hydrocarbons for Extended Analysis of Natural Gases)

Adopted as a Standard 1942 Revised 2016

GPA Midstream Association Sixty Sixty American Plaza, Suite 700

Tulsa, Oklahoma 74135

GPA Midstream Standard 2145-16

Copyright Gas Processors Association Provided by IHS under license with GPA Licensee=Repsol Site 19-20/5982486004, User=Miller, Barb

Not for Resale, 06/20/2016 13:42:46 MDTNo reproduction or networking permitted without license from IHS

--`,``,``,`````,,``,,,``,,`,,,`,-`-`,,`,,`,`,,`---

Page 2: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

GPA 2145 Page ii

FOREWORD This standard provides the gas processing industry with a convenient compilation of authoritative numerical values for hydrocarbons and other compounds occurring in natural gas and natural gas liquids as well as other compounds of interest to the industry. The physical properties selected are those considered most valuable for engineering and analytical computations. Most properties are based upon two NIST Standard Reference Databases: the Web Thermo Tables, WTT (NIST SRSD-3), and the Reference Fluid Thermodynamic and Transport Properties Database, REFPROP 9.1 (NIST SRD-23). The data in this publication were checked, evaluated, and recalculated when necessary by the Applied Chemicals and Materials Division of the Material Measurement Laboratory at NIST. The listed flammability limits and octane numbers were not evaluated at NIST and sources for these properties are provided in the references. Methodology The process for revising this and future versions of GPA-2145 has been updated. Current values will be used in all subsequent revisions, except when a newly accepted and confirmed equation of state or substantiated improved measurements becomes available. In these situations, the following items determine when changes will be made.

a) If any property for a component falls outside the uncertainty of the new EOS or substantiated measurements, all properties will be updated for that component.

b) If all existing values for a component fall within the uncertainty of the new EOS or substantiated measurements, no changes will be made.

Summary of changes in this revision of GPA-2145 a) For helium, all values were updated based on a new equation of state finalized in 2015.

b) For propylene, the heat capacities were updated based on the final equation of state.

c) The “volume of air required to burn one volume of gas” has been updated to reflect the revised concentration of oxygen in air (as explained in the Properties of Air section at the end of this standard).

d) The definition of relative density was modified based solely on a fixed reference value (28.9625 g/mol), not on the molar mass of air.

e) The main tables now list pure fluids only; all properties for air were removed from the tables and included in the Properties of Air section at the end of this standard.

f) All fluids from TP-17 were added, and properties displayed here are based on the format from that version. Most of the properties for the fluids in the 1998 version of TP-17 (excluding the fluids in 2145-09) have changed; the new values are based on properties calculated from the equations of state available in the REFPROP program (reference 2) or from the TRC database (reference 3). The main tables and the extended tables list the same properties.

g) The fluids in 2145-09 are included here in their original format, as well as in the transposed TP-17 format.

Copyright Gas Processors Association Provided by IHS under license with GPA Licensee=Repsol Site 19-20/5982486004, User=Miller, Barb

Not for Resale, 06/20/2016 13:42:46 MDTNo reproduction or networking permitted without license from IHS

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Page 3: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

GPA 2145 Page iii

h) Additional properties from TP-17 are included; these are the chemical formula, acentric factor, critical density, compressibility factor at 60 °F, liquid net heating value, refractive index, and temperature coefficient of density.

i) Other properties now appearing in the main tables include the specific volume as an ideal gas, vapor pressure at 60 °F, and summation factor for a new compressibility formula.

All fluids in the GPSA Engineering Data Book are now included in this revision of GPA-2145. Property values for compounds listed here in GPA 2145-16 supersede those listed in the GPSA Engineering Data Book, 13th edition, and all earlier editions.

Copyright Gas Processors Association Provided by IHS under license with GPA Licensee=Repsol Site 19-20/5982486004, User=Miller, Barb

Not for Resale, 06/20/2016 13:42:46 MDTNo reproduction or networking permitted without license from IHS

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Page 4: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

GPA 2145 Page iv

DISCLAIMER GPA Midstream Association publications necessarily address problems of a general nature and may be used by anyone desiring to do so. Every effort has been made by GPA Midstream to assure accuracy and reliability of the information contained in this publication. Each person who uses or refers to this publication will need to make their own decisions based on consideration of their own internal best practices, recommendations, and engineering judgment. GPA Midstream and its members do not guarantee the accuracy, completeness, efficacy, timeliness, or correct sequencing of such information, including without limitation, the reference material and information of the various other industry associations that may be provided herein. Use of the information provided in this publication is voluntary, and reliance on it should only be undertaken after an independent review of its accuracy, completeness, efficacy, timeliness, and consideration of the applicability of any local, state, and federal laws and regulations. It is not the intent of GPA Midstream to assume the duties of employers, manufacturers, or suppliers to warn and properly train employees, or others exposed, concerning health and safety risks or precautions. Reference herein to any specific commercial product, process, or service by trade name, trademark, service mark, manufacturer, or otherwise does not constitute or imply endorsement, recommendation, or favoring by GPA Midstream. GPA Midstream makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss or damage resulting from its use or for the violation of any federal, state or municipal regulation with which this publication may conflict, or for any infringement of letters of patent regarding apparatus, equipment, or method so covered.

“Copyright© 2016 by GPA Midstream Association. All rights reserved. No part of this Report may be reproduced without the written consent

of GPA Midstream Association.”

Copyright Gas Processors Association Provided by IHS under license with GPA Licensee=Repsol Site 19-20/5982486004, User=Miller, Barb

Not for Resale, 06/20/2016 13:42:46 MDTNo reproduction or networking permitted without license from IHS

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Page 5: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

GPA 2145 Page 1

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

Notes

Compound methane ethane propane isobutane n-butane isopentane n-pentane Formula CH4 C2H6 C3H8 C4H10 C4H10 C5H12 C5H12

a Molar Mass 16.0425 30.0690 44.0956 58.1222 58.1222 72.1488 72.1488 b Boiling Temperature (°F, 14.696 psia) -258.66 -127.44 -43.80 10.85 31.12 82.09 96.91 c Triple Point Temperature (°F) -296.42 -297.01 -305.72 -254.96 -216.85 -256.90 -201.42 b

Vapor Pressure 60 °F (psia) 495.62 107.71 38.225 26.027 9.417 6.888 100 °F (psia) 5000 800 188.62 72.644 51.567 20.474 15.576

Critical Constants Temperature (°F) -116.66 89.91 206.13 274.39 305.56 368.96 385.79 Pressure (psia) 667.1 706.7 616.6 526.3 550.6 489.9 488.8 Density (lbm/ft3) 10.154 12.871 13.764 14.078 14.078 14.733 14.483

h Acentric Factor 0.0114 0.0995 0.1521 0.1835 0.2008 0.2274 0.2515 b,d

Density of Liquid (60 °F, 14.696 psia) Relative density (60 °F/60 °F) 0.3 0.35628 0.50719 0.56283 0.58420 0.62514 0.63071 API gravity 340 265.66 147.49 119.91 110.71 94.848 92.850 Density (lbm/gal) 2.5 2.9704 4.2285 4.6925 4.8706 5.2120 5.2584

e Temp. coef. of density (1/°F, at 60 °F sat.) -0.00733 -0.00167 -0.00121 -0.00108 -0.00089 -0.00086 f

Density of Ideal Gas (60 °F, 14.696 psia) Relative density 0.5539 1.0382 1.5225 2.0068 2.0068 2.4911 2.4911 Volume (ft3/lbm) 23.6549 12.6204 8.6059 6.5290 6.5290 5.2597 5.2597 Density (lbm/1000 ft3) 42.27 79.24 116.20 153.16 153.16 190.12 190.12

b,d,g

Volume (60 °F, 14.696 psia) Liquid (gal/lbmol) 6.417 10.123 10.428 12.386 11.933 13.843 13.721 ft3 ideal gas/gal liquid 59.138 37.488 36.391 30.637 31.801 27.414 27.658 Ratio, ideal gas/liquid 442.38 280.43 272.22 229.18 237.89 205.07 206.89

p

Summation Factor (60 °F) Z=1-P*b2 (1/psia0.5) 0.0116 0.0238 0.0347 0.0441 0.0470 0.0576 0.0606 Z=1-P/P0*b2 (P0=14.696 psia) 0.04438 0.0913 0.1329 0.1690 0.1801 0.2206 0.2323

Compressibility Factor at 60 °F (sat) 0.5788 0.8499 0.9188 0.9386 0.9677 0.9740 b,d,i

Gross Heating Value (60 °F, ideal reaction) Fuel as Liquid (Btu/lbm) 22185. 21491. 21081. 21137. 20891. 20923. Fuel as Liquid (Btu/gal) 65897. 90875. 98924. 102950. 108880. 110020. Fuel as Ideal gas (Btu/lbm) 23892. 22334. 21654. 21232. 21300. 21044. 21085. Fuel as Ideal gas (Btu/ft3) 1010.0 1769.7 2516.1 3251.9 3262.3 4000.9 4008.7 Fuel as Ideal gas (Btu/gal) 59729. 66340. 91563. 99630. 103740. 109680. 110870.

b,d,i

Net Heating Value (60 °F, ideal reaction) Fuel as Liquid (Btu/lbm) 20281. 19760. 19440. 19495. 19303. 19335. Fuel as Ideal gas (Btu/ft3) 909.4 1619. 2315. 3000. 3011. 3699. 3707.

j

Volume of Air Required to Burn One Volume of Ideal Gas 9.552 16.715 23.879 31.043 31.043 38.206 38.206

b,k

Heat of Vaporization (14.696 psia) Btu/lbm 219.6 210.4 183.0 157.0 165.8 147.6 153.7

b,m

Specific Heat (60 °F) Cp [Btu/(lbm °F)] (ideal gas) 0.5266 0.4079 0.3873 0.3866 0.3949 0.3828 0.3879 Cv [Btu/(lbm °F)] (ideal gas) 0.4028 0.3418 0.3423 0.3525 0.3608 0.3553 0.3603 C [Btu/ (lbm °F)] 0.9664 0.6183 0.5641 0.5692 0.5311 0.5427 k=Cp/Cv 1.3073 1.1932 1.1316 1.0969 1.0947 1.0775 1.0764

n Refractive Index , nD (60 °F) 1.00042 1.00072 1.00103 1.00123 1.00133 1.35639 1.35981 4

Flammability Limits (100 °F, 14.696 psia) Lower (volume % in air) 5.0 2.9 2.0 1.8 1.5 1.3 1.4 Upper (volume % in air) 15.0 13.0 9.5 8.5 9.0 8.0 8.3

5,o

Octane Number Motor Method D-357 +0.05 97.1 97.6 89.6 90.3 62.6 Research Method D-908 +1.6 +1.8 +0.1 93.8 92.3 61.7

Copyright Gas Processors Association Provided by IHS under license with GPA Licensee=Repsol Site 19-20/5982486004, User=Miller, Barb

Not for Resale, 06/20/2016 13:42:46 MDTNo reproduction or networking permitted without license from IHS

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Page 6: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

GPA 2145 Page 2

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

Compound n-hexane n-heptane n-octane n-nonane n-decane ethylene propylene Formula C6H14 C7H16 C8H18 C9H20 C10H22 C2H4 C3H6 Molar Mass 86.1754 100.2019 114.2285 128.2551 142.2817 28.0532 42.0797 Boiling Temperature (°F, 14.696 psia) 155.68 209.08 258.12 303.37 345.42 -154.79 -53.72 Triple Point Temperature (°F) -139.58 -131.08 -70.20 -64.21 -21.37 -272.49 -301.35 Vapor Pressure 60 °F (psia) 1.914 0.5413 0.1546 0.04535 0.01335 131.3 100 °F (psia) 4.961 1.619 0.5349 0.1809 0.06148 227.3 Critical Constants Temperature (°F) 453.8 512.56 564.22 610.52 652.19 48.56 195.91 Pressure (psia) 436.9 396.8 360.7 330.8 305.0 731.3 660.6 Density (lbm/ft3) 14.557 14.483 14.664 14.492 14.567 13.374 14.335 Acentric Factor 0.2986 0.3494 0.3971 0.4433 0.4884 0.0866 0.1461 Density of Liquid (60 °F, 14.696 psia) Relative density (60 °F/60 °F) 0.66406 0.68823 0.70655 0.72224 0.73458 0.56820 0.52260 API gravity 81.582 74.101 68.768 64.418 61.127 117.53 139.260 Density (lbm/gal) 5.5364 5.7379 5.8907 6.0215 6.1244 4.7372 4.3571 Temp. coef. of density (1/°F, at 60 °F sat.) -0.00076 -0.00068 -0.00063 -0.00061 -0.00059 -0.00180 Density of Ideal Gas (60 °F, 14.696 psia) Relative density 2.9754 3.4597 3.9440 4.4283 4.9126 0.9686 1.4529 Volume (ft3/lbm) 4.4036 3.7872 3.3221 2.9588 2.6671 13.5273 9.0182 Density (lbm/1000 ft3) 227.09 264.05 301.01 337.97 374.93 73.92 110.89 Volume (60 °F, 14.696 psia) Liquid (gal/lbmol) 15.565 17.463 19.391 21.300 23.232 5.9219 9.6578 ft3 ideal gas/gal liquid 24.380 21.730 19.570 17.816 16.334 64.081 39.293 Ratio, ideal gas/liquid 182.38 162.56 146.39 133.28 122.19 479.36 293.93 Summation Factor (60 °F) Z=1-P*b2 (1/psia0.5) 0.0776 0.0951 0.1128 0.1307 0.1556 0.0207 0.0327 Z=1-P/P0*b2 (P0=14.696 psia) 0.2973 0.3646 0.4326 0.5009 0.5967 0.0795 0.1254 Compressibility Factor at 60 °F (sat) 0.9884 0.9951 0.9980 0.9992 0.9997 0.8345 Gross Heating Value (60 °F, ideal reaction) Fuel as Liquid (Btu/lbm) 20783. 20680. 20601. 20543. 20494. 20875. Fuel as Liquid (Btu/gal) 115060. 118660. 121350. 123700. 125510. 90954. Fuel as Ideal gas (Btu/lbm) 20943. 20839. 20760. 20701. 20651. 21640. 21040. Fuel as Ideal gas (Btu/ft3) 4755.9 5502.6 6249.0 6996.3 7742.9 1599.7 2333.0 Fuel as Ideal gas (Btu/gal) 115950. 119570. 122290. 124650. 126480. 102515. 91672. Net Heating Value (60 °F, ideal reaction) Fuel as Liquid (Btu/lbm) 19233. 19155. 19096. 19054. 19018. 19514. Fuel as Ideal gas (Btu/ft3) 4404. 5100. 5796. 6493. 7190. 1499. 2182. Volume of Air Required to Burn One Volume of Ideal Gas 45.370 52.534 59.697 66.861 74.025 14.327 21.491 Heat of Vaporization (14.696 psia) Btu/lbm 144.0 136.2 129.9 124.1 118.8 207.4 188.7 Specific Heat (60 °F) Cp [Btu/(lbm °F)] (ideal gas) 0.3857 0.3841 0.3829 0.3820 0.3813 0.3573 0.3572 Cv [Btu/(lbm °F)] (ideal gas) 0.3626 0.3643 0.3655 0.3665 0.3673 0.2865 0.3101 Cσ [Btu/(lbm °F)] (sat. liquid) 0.5285 0.5268 0.5240 0.5192 0.5155 0.6036 k=Cp/Cv 1.0635 1.0544 1.0476 1.0423 1.0380 1.2471 1.1519 Refractive Index , nD (60 °F) 1.37673 1.38995 1.39960 1.40719 1.41384 1.31616 Flammability Limits (100 °F, 14.696 psia) Lower (volume % in air) 1.1 1.0 0.8 0.7 0.7 2.9 2.1 Upper (volume % in air) 7.7 7.0 6.5 5.6 5.4 32.0 11.1 Octane Number Motor Method D-357 26 75.6 84.9 Research Method D-908 24.8 +0.03 +0.2

Copyright Gas Processors Association Provided by IHS under license with GPA Licensee=Repsol Site 19-20/5982486004, User=Miller, Barb

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Page 7: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

GPA 2145 Page 3

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

Compound carbon dioxide

hydrogen sulfide nitrogen oxygen helium water hydrogen

carbon monoxide

Formula CO2 H2S N2 O2 He H2O H2 CO Molar Mass 44.0095 34.0809 28.0134 31.9988 4.0026 18.0153 2.0159 28.0101 Boiling Temperature (°F, 14.696 psia) -109.24 -76.54 -320.43 -297.33 -452.07 211.95 -423.01 -312.72 Triple Point Temperature (°F) -69.81 -121.81 -346.00 -361.82 -455.75 32.018 -434.55 -336.98 Vapor Pressure 60 °F (psia) 747.8 230.4 0.25640 100 °F (psia) 395.0 0.9505 Critical Constants Temperature (°F) 87.76 211.91 -232.53 -181.43 -450.32 705.11 -400.01 -220.52 Pressure (psia) 1070.0 1305.3 492.5 731.4 33.115 3200.1 188.0 506.8 Density (lbm/ft3) 29.191 21.680 19.559 27.228 4.3437 20.102 1.952 18.972 Acentric Factor 0.2239 0.1005 0.0372 0.0222 -0.3836 0.3443 -0.2187 0.0497 Density of Liquid (60 °F, 14.696 psia) Relative density (60 °F/60 °F) 0.81716 0.79886 0.80687 1.1423 0.12479 1.00000 0.070918 0.79399 API gravity 41.660 45.628 43.868 -7.630 1002.4 10.000 1863.8 46.714 Density (lbm/gal) 6.8129 6.6602 6.7271 9.5238 1.0404 8.3372 0.59126 6.6197 Temp. coef. of density (1/°F, at 60 °F sat.) -0.00801 -0.00171 -0.00009 Density of Ideal Gas (60 °F, 14.696 psia) Relative density 1.5195 1.1767 0.9672 1.1048 0.1382 0.62202 0.0696 0.9671 Volume (ft3/lbm) 8.6227 11.1348 13.5465 11.8593 94.8090 21.0645 188.247 13.5481 Density (lbm/1000 ft3) 115.97 89.81 73.82 84.322 10.55 47.473 5.31 73.81 Volume (60 °F, 14.696 psia) Liquid (gal/lbmol) 6.4598 5.1171 4.1643 3.3599 3.8471 2.1608 3.4095 4.2313 ft3 ideal gas/gal liquid 58.746 74.16 91.128 112.95 98.641 175.62 111.30 89.684 Ratio, ideal gas/liquid 439.45 554.76 681.69 844.89 737.88 1313.7 832.60 670.88 Summation Factor (60 °F) Z=1-P*b2 (1/psia0.5) 0.0195 0.0239 0.00442 0.0072 0.06510 0.0056 Z=1-P/P0*b2 (P0=14.696 psia) 0.0748 0.0917 0.01696 0.02752 0.2496 0.0216 Compressibility Factor at 60 °F (sat) 0.5764 0.8460 0.9989 Gross Heating Value (60 °F, ideal reaction) Fuel as Liquid (Btu/lbm) 6892.4 Fuel as Liquid (Btu/gal) 45905. Fuel as Ideal gas (Btu/lbm) 7094.0 1059.8 61022. 4342. Fuel as Ideal gas (Btu/ft3) 637.10 50.310 324.2 320.5 Fuel as Ideal gas (Btu/gal) 47248. 8835.4 36080. 28745. Net Heating Value (60 °F, ideal reaction) Fuel as Liquid (Btu/lbm) 6332. Fuel as Ideal gas (Btu/ft3) 586.79 273.9 320.5 Volume of Air Required to Burn One Volume of Ideal Gas 7.164 2.388 2.388 Heat of Vaporization (14.696 psia) Btu/lbm 246.5 234.9 85.63 91.60 8.841 970.12 192.9 92.3 Specific Heat (60 °F) Cp [Btu/(lbm °F)] (ideal gas) 0.1992 0.2383 0.2483 0.2189 1.2404 0.44478 3.4076 0.2484 Cv [Btu/(lbm °F)] (ideal gas) 0.1541 0.1800 0.1774 0.1569 0.7442 0.33455 2.4225 0.1775 Cσ [Btu/(lbm °F)] (sat. liquid) 0.6857 0.5088 1.0003 k=Cp/Cv 1.2929 1.3236 1.3996 1.3956 1.6667 1.3295 1.4067 1.3994 Refractive Index , nD (60 °F) 1.22624 1.33416 Flammability Limits (100 °F, 14.696 psia) Lower (volume % in air) 4.3 4.0 12.5 Upper (volume % in air) 45.5 74.2 74.2 Octane Number Motor Method D-357 Research Method D-908

Copyright Gas Processors Association Provided by IHS under license with GPA Licensee=Repsol Site 19-20/5982486004, User=Miller, Barb

Not for Resale, 06/20/2016 13:42:46 MDTNo reproduction or networking permitted without license from IHS

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Page 8: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 4

Notes a b c b h

Molar Mass

Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

14.696 psia 60 °F 100 °F Temp. Pressure Density

Compound Formula °F psia °F psia lbm/ft3 - 1 methane CH4 16.0425 -258.66 -296.42 5000 -116.66 667.1 10.154 0.0114 2 ethane C2H6 30.0690 -127.44 -297.01 495.62 800 89.91 706.7 12.871 0.0995 3 propane C3H8 44.0956 -43.80 -305.72 107.71 188.62 206.13 616.6 13.764 0.1521 4 isobutane C4H10 58.1222 10.85 -254.96 38.225 72.644 274.39 526.3 14.078 0.1835 5 n-butane C4H10 58.1222 31.12 -216.85 26.027 51.567 305.56 550.6 14.078 0.2008 6 isopentane C5H12 72.1488 82.09 -256.90 9.417 20.474 368.96 489.9 14.733 0.2274 7 n-pentane C5H12 72.1488 96.91 -201.42 6.888 15.576 385.79 488.8 14.483 0.2515 8 n-hexane C6H14 86.1754 155.68 -139.58 1.914 4.961 453.8 436.9 14.557 0.2986 9 n-heptane C7H16 100.2019 209.08 -131.08 0.5413 1.619 512.56 396.8 14.483 0.3494 10 n-octane C8H18 114.2285 258.12 -70.20 0.1546 0.5349 564.22 360.7 14.664 0.3971 11 n-nonane C9H20 128.2551 303.37 -64.21 0.04535 0.1809 610.52 330.8 14.492 0.4433 12 n-decane C10H22 142.2817 345.42 -21.37 0.01335 0.06148 652.19 305.0 14.567 0.4884 13 ethylene C2H4 28.0532 -154.79 -272.49 48.56 731.3 13.374 0.0866 14 propylene C3H6 42.0797 -53.72 -301.35 131.3 227.3 195.91 660.6 14.335 0.1461 15 carbon dioxide CO2 44.0095 -109.24 -69.81 747.8 87.76 1070.0 29.191 0.2239 16 hydrogen sulfide H2S 34.0809 -76.54 -121.81 230.4 395.0 211.91 1305.3 21.680 0.1005 17 nitrogen N2 28.0134 -320.43 -346.00 -232.53 492.5 19.559 0.0372 18 oxygen O2 31.9988 -297.33 -361.82 -181.43 731.4 27.228 0.0222 19 helium He 4.0026 -452.07 -455.75 -450.32 33.115 4.3437 -0.3836 20 water H2O 18.0153 211.95 32.018 0.25640 0.9505 705.11 3200.1 20.102 0.3443 21 hydrogen H2 2.0159 -423.01 -434.55 -400.01 188.0 1.952 -0.2187 22 carbon monoxide CO 28.0101 -312.72 -336.98 -220.52 506.8 18.972 0.0497 23 hydrogen chloride HCl 36.4609 -120.95 -173.45 556.4 912.0 124.52 1202.1 26.859 0.1282 24 carbonyl sulfide COS 60.0751 -58.29 -217.91 145.9 251.8 222.12 923.7 27.783 0.0977 25 chlorine Cl2 70.9060 -29.15 -149.70 86.50 157.5 290.69 1157.1 34.014 0.0875 26 ammonia NH3 17.0305 -27.99 -107.78 107.6 212.0 270.05 1643.7 14.047 0.2560 27 sulfur dioxide SO2 64.0638 13.97 -103.81 41.01 85.53 315.48 1143.5 32.775 0.2557 28 methanol CH4O 32.0419 148.07 -143.57 1.481 4.641 464.41 1191.6 17.573 0.5625 29 ethanol C2H6O 46.0684 173.16 -173.47 0.6498 2.310 466.81 909.1 17.054 0.6461 30 ethyne C2H2 26.0373 -114.68 564.4 95.44 900.1 13.825 0.1983 31 1,2-propadiene C3H4 40.0639 -29.43 -213.61 88.28 160.6 249.31 910.4 15.183 0.1865 32 1-propyne C3H4 40.0639 -13.24 -152.77 63.75 120.4 264.61 816.0 15.290 0.2036 33 1,3-butadiene C4H6 54.0904 23.80 -163.98 30.21 59.44 305.48 619.4 15.157 0.1890 34 1,2-butadiene C4H6 54.0904 51.73 -213.15 17.36 35.95 362.03 702.9 15.448 0.1816 35 2-methylpropene C4H8 56.1063 19.39 -221.35 32.88 64.02 292.89 581.6 14.606 0.1926 36 1-butene C4H8 56.1063 20.65 -301.63 32.03 62.42 295.05 580.9 14.851 0.1919 37 (E)-2-butene C4H8 56.1063 33.58 -157.99 24.92 49.90 311.83 584.1 14.756 0.2101

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 5

Notes a b c b h Molar

Mass Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

14.696 psia 60 °F 100 °F Temp. Pressure Density

Compound Formula °F psia °F psia lbm/ft3 - 38 (Z)-2-butene C4H8 56.1063 38.70 -217.93 22.60 45.90 324.68 612.9 14.865 0.2024 39 2-methyl-1,3-butadiene C5H8 68.1170 93.29 -230.96 7.411 16.68 395.15 552.3 14.311 0.2298 40 3-methyl-1-butene C5H10 70.1329 68.09 -271.15 12.50 26.42 355.17 509.1 14.358 0.2065 41 1-pentene C5H10 70.1329 85.93 -265.24 8.675 19.12 376.86 514.4 14.546 0.2357 42 2-methyl-1-butene C5H10 70.1329 87.97 -215.55 8.272 18.44 380.93 528.9 14.862 0.2408 43 (E)-2-pentene C5H10 70.1329 97.39 -220.36 6.773 15.44 393.17 526.9 14.713 0.2483 44 (Z)-2-pentene C5H10 70.1329 98.47 -240.43 6.619 15.13 395.13 535.4 14.515 0.2536 45 2-methyl-2-butene C5H10 70.1329 101.19 -208.71 6.262 14.37 386.96 495.3 14.658 0.2815 46 cyclopentane C5H10 70.1329 120.65 -136.21 4.174 9.919 461.43 664.7 17.163 0.2019 47 2,2-dimethylpropane C5H12 72.1488 49.11 2.21 18.19 36.71 321.06 463.5 14.728 0.1961 48 benzene C6H6 78.1118 176.12 41.94 1.170 3.226 551.97 711.7 19.023 0.2109 49 methylcyclopentane C6H12 84.1595 161.22 -224.35 1.741 4.506 499.34 548.2 16.334 0.2290 50 cyclohexane C6H12 84.1595 177.29 44.08 1.213 3.267 536.81 591.8 16.939 0.2096 51 2,2-dimethylbutane C6H14 86.1754 121.49 -146.12 4.236 9.860 420.70 449.9 14.740 0.2323 52 2,3-dimethylbutane C6H14 86.1754 136.34 -198.54 3.057 7.410 440.62 454.4 14.938 0.2464 53 2-methylpentane C6H14 86.1754 140.38 -244.39 2.729 6.772 436.19 440.9 14.606 0.2797 54 3-methylpentane C6H14 86.1754 145.85 -261.20 2.439 6.103 448.54 453.0 14.591 0.2719 55 toluene C7H8 92.1384 231.07 -139.27 0.3319 1.033 605.48 598.5 18.228 0.2657 56 1,1-dimethylcyclopentane C7H14 98.1861 190.05 -92.97 0.9351 2.566 542.93 553.8 16.292 0.2393 57 trans-1,3-dimethylcyclopentane C7H14 98.1861 195.32 -208.95 0.8253 2.294 532.13 485.6 16.087 0.2605 58 cis-1,3-dimethylcyclopentane C7H14 98.1861 197.07 -208.60 0.7931 2.217 533.93 486.8 15.990 0.2657 59 trans-1,2-dimethylcyclopentane C7H14 98.1861 197.33 -181.21 0.7864 2.201 539.33 503.6 16.132 0.2584 60 cis-1,2-dimethylcyclopentane C7H14 98.1861 211.09 -64.61 0.5687 1.652 559.13 509.6 16.428 0.2678 61 Methylcyclohexane C7H14 98.1861 213.55 -195.81 0.5589 1.608 570.28 507.7 16.668 0.2378 62 ethylcyclopentane C7H14 98.1861 218.23 -217.16 0.4788 1.415 565.40 492.7 16.237 0.2707 63 cycloheptane C7H14 98.1861 245.82 17.56 0.2543 0.8004 628.00 559.6 17.331 0.2433 64 2,2-dimethylpentane C7H16 100.2019 174.51 -190.67 1.317 3.493 477.45 401.5 15.045 0.2849 65 2,4-dimethylpentane C7H16 100.2019 176.84 -182.49 1.226 3.296 476.25 396.6 14.983 0.3004 66 2,2,3-trimethylbutane C7H16 100.2019 177.52 -12.21 1.288 3.379 496.61 427.1 15.462 0.2478 67 3,3-dimethylpentane C7H16 100.2019 186.87 -209.89 1.028 2.773 505.79 426.2 15.108 0.2664 68 2,3-dimethylpentane C7H16 100.2019 193.64 -190.80 0.8430 2.346 507.77 422.2 15.834 0.2949 69 2-methylhexane C7H16 100.2019 193.95 -180.82 0.7987 2.272 494.99 396.5 14.850 0.3287 70 3-methylhexane C7H16 100.2019 197.16 -182.88 0.7454 2.130 503.97 406.3 15.329 0.3189 71 3-ethylpentane C7H16 100.2019 200.19 -181.39 0.7012 2.013 513.53 420.7 15.045 0.3108 72 styrene C8H8 104.1491 293.47 -23.18 0.06717 0.2497 683.69 563.2 18.238 0.3026 73 ethylbenzene C8H10 106.1650 277.10 -138.91 0.1057 0.3720 651.15 525.4 18.167 0.3050 74 p-xylene C8H10 106.1650 280.98 55.85 0.09720 0.3434 649.43 512.2 17.854 0.3240 75 m-xylene C8H10 106.1650 282.32 -54.13 0.09184 0.3275 650.73 512.7 17.663 0.3261

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Page 10: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 6

Notes a b c b h Molar

Mass Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

14.696 psia 60 °F 100 °F Temp. Pressure Density

Compound Formula °F psia °F psia lbm/ft3 - 76 o-xylene C8H10 106.1650 291.87 -13.30 0.07295 0.2658 674.80 542.1 17.792 0.3118 77 1,1,3-trimethylcyclopentane C8H16 112.2126 220.74 -224.57 0.4783 1.396 555.53 430.3 15.875 0.2731 78 1,trans-2,cis-4-trimethylcyclopentane C8H16 112.2126 229.58 -203.48 0.3750 1.135 557.33 416.1 15.745 0.3058 79 r-1,t-2,c-3-trimethylcyclopentane C8H16 112.2126 230.10 -170.86 0.3771 1.134 560.93 414.2 15.877 0.2920 80 1,1,2-trimethylcyclopentane C8H16 112.2126 236.65 -7.04 0.3303 1.002 582.53 443.7 16.228 0.2722 81 1,cis-2,trans-4-trimethylcyclopentane C8H16 112.2126 242.07 -204.25 0.2855 0.8832 578.93 416.0 15.971 0.2923 82 r-1,c-2,t-3-trimethylcyclopentane C8H16 112.2126 243.80 -171.18 0.2691 0.8408 578.93 414.0 16.085 0.3005 83 trans-1,4-dimethylcyclohexane C8H16 112.2126 246.78 -34.42 0.2666 0.8232 598.12 440.5 15.970 0.2679 84 1,1-dimethylcyclohexane C8H16 112.2126 247.10 -27.96 0.2645 0.8190 616.73 501.4 16.376 0.2527 85 trans-1,3-dimethylcyclohexane C8H16 112.2126 248.10 -130.09 0.2515 0.7852 600.35 449.3 15.727 0.2742 86 trans-1-ethyl-3-methylcyclopentane C8H16 112.2126 249.09 0.2467 0.7714 595.13 428.9 15.917 0.2818 87 cis-1-ethyl-3-methylcyclopentane C8H16 112.2126 250.12 0.2416 0.7567 596.93 428.9 16.110 0.2808 88 trans-1-ethyl-2-methylcyclopentane C8H16 112.2126 250.21 -163.75 0.2504 0.7753 600.53 428.9 16.066 0.2681 89 1-ethyl-1-methylcyclopentane C8H16 112.2126 250.69 -226.84 0.2290 0.7270 611.33 485.2 16.315 0.2777 90 1,cis-2,cis-3-trimethylcyclopentane C8H16 112.2126 252.26 -177.65 0.2263 0.7161 593.33 414.0 16.150 0.2931 91 cis-1,4-dimethylcyclohexane C8H16 112.2126 255.71 -125.28 0.2088 0.6646 626.07 497.7 16.131 0.2605 92 cis-1,3-dimethylcyclohexane C8H16 112.2126 255.95 -103.92 0.2034 0.6533 598.14 417.6 16.366 0.2990 93 isopropylcyclopentane C8H16 112.2126 259.49 -168.63 0.1863 0.6026 629.33 498.3 16.188 0.2695 94 cis-1-ethyl-2-methylcyclopentane C8H16 112.2126 262.43 -158.69 0.1668 0.5506 618.53 461.8 16.280 0.2962 95 cis-1,2-dimethylcyclohexane C8H16 112.2126 265.45 -57.70 0.1668 0.5431 630.41 464.9 16.496 0.2722 96 propylcyclopentane C8H16 112.2126 267.63 -179.22 0.1392 0.4730 616.73 447.3 16.042 0.3201 97 ethylcyclohexane C8H16 112.2126 269.15 -168.31 0.1460 0.4860 632.75 476.6 16.066 0.2939 98 cyclooctane C8H16 112.2126 304.05 58.68 0.06020 0.2228 705.57 514.8 17.086 0.2498 99 2,2,4-trimethylpentane C8H18 114.2285 210.57 -161.28 0.5966 1.710 519.53 373.0 15.118 0.3035 100 2,2-dimethylhexane C8H18 114.2285 224.26 -186.14 0.4020 1.223 530.11 366.6 14.842 0.3370 101 2,5-dimethylhexane C8H18 114.2285 228.34 -132.05 0.3558 1.103 530.34 360.8 14.705 0.3562 102 2,4-dimethylhexane C8H18 114.2285 228.89 0.3565 1.100 535.72 370.9 14.650 0.3468 103 2,2,3-trimethylpentane C8H18 114.2285 229.67 -170.41 0.3806 1.144 554.56 395.4 16.232 0.2967 104 3,3-dimethylhexane C8H18 114.2285 233.50 -195.09 0.3358 1.032 551.90 385.1 16.086 0.3210 105 2,3,4-trimethylpentane C8H18 114.2285 236.21 -164.81 0.3171 0.9779 559.80 392.5 15.439 0.3117 106 2,3-dimethylhexane C8H18 114.2285 240.05 0.2709 0.8622 554.54 381.2 15.232 0.3464 107 2-methylheptane C8H18 114.2285 243.73 -164.10 0.2349 0.7675 547.66 362.9 14.608 0.3809 108 4-methylheptane C8H18 114.2285 243.83 -185.79 0.2348 0.7665 551.39 368.6 14.899 0.3708 109 3,4-dimethylhexane C8H18 114.2285 243.86 0.2496 0.7990 564.19 390.4 15.295 0.3383 110 3-ethylhexane C8H18 114.2285 245.31 0.2300 0.7499 558.14 377.8 15.605 0.3604 111 3-methylheptane C8H18 114.2285 246.01 -184.86 0.2230 0.7318 554.96 368.8 15.269 0.3690 112 isopropylbenzene C9H12 120.1916 306.22 -140.81 0.05005 0.1906 676.41 462.2 17.781 0.3219 113 propylbenzene C9H12 120.1916 318.55 -147.15 0.03623 0.1431 689.24 464.3 17.024 0.3449

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Page 11: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 7

Notes a b c b h Molar

Mass Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

14.696 psia 60 °F 100 °F Temp. Pressure Density

Compound Formula °F psia °F psia lbm/ft3 - 114 m-ethyltoluene C9H12 120.1916 322.33 -140.24 0.03088 0.1251 689.45 456.0 16.988 0.3575 115 p-ethyltoluene C9H12 120.1916 323.57 -81.11 0.02980 0.1221 692.68 469.1 16.837 0.3654 116 1,3,5-trimethylbenzene C9H12 120.1916 328.56 -48.44 0.02812 0.1105 687.48 453.7 17.254 0.3993 117 o-ethyltoluene C9H12 120.1916 329.26 -113.30 0.02607 0.1072 702.77 465.2 16.976 0.3537 118 1,2,4-trimethylbenzene C9H12 120.1916 336.87 -46.81 0.02050 0.08713 708.74 473.0 17.153 0.3817 119 1,2,3-trimethylbenzene C9H12 120.1916 348.94 -13.58 0.01519 0.06610 736.83 500.4 17.752 0.3649 120 1,1,4-trimethylcyclohexane C9H18 126.2392 274.16 0.1496 0.4849 623.93 389.5 15.940 0.2765 121 1,1,3-trimethylcyclohexane C9H18 126.2392 277.89 -91.39 0.1264 0.4227 629.33 406.2 16.056 0.2930 122 r-1,c-3,c-5-trimethylcyclohexane C9H18 126.2392 281.43 -47.29 0.1053 0.3706 614.93 382.7 15.790 0.3469 123 r-1,c-3,t-5-trimethylcyclohexane C9H18 126.2392 285.09 -124.87 0.09680 0.3384 624.22 384.2 15.923 0.3316 124 trans,trans-1,2,4-trimethylcyclohexane C9H18 126.2392 286.80 0.1090 0.3661 638.33 384.2 15.891 0.2868 125 cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane C9H18 126.2392 287.57 0.08627 0.3081 623.93 384.2 16.064 0.3474 126 r-1,t-2,c-3-trimethylcyclohexane C9H18 126.2392 289.86 -88.26 0.09110 0.3178 634.73 384.6 16.083 0.3181 127 r-1,t-2,t-4-trimethylcyclohexane C9H18 126.2392 290.37 0.08425 0.2994 631.13 384.6 15.307 0.3351 128 cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane C9H18 126.2392 293.73 0.07879 0.2813 634.73 383.7 16.113 0.3394 129 1,1,2-trimethylcyclohexane C9H18 126.2392 294.07 -20.52 0.09475 0.3209 658.13 402.0 16.343 0.2715 130 isobutylcyclopentane C9H18 126.2392 298.58 -175.41 0.07141 0.2563 650.93 399.2 15.925 0.3195 131 cis,cis-1,2,3-trimethylcyclohexane C9H18 126.2392 301.47 0.06637 0.2407 649.13 385.5 16.287 0.3291 132 cis-1,2,trans-1,3-cyclohexane C9H18 126.2392 304.08 -122.24 0.05889 0.2177 649.13 384.2 16.265 0.3423 133 isopropylcyclohexane C9H18 126.2392 309.94 -129.86 0.05110 0.1900 678.29 443.8 16.298 0.3214 134 butylcyclopentane C9H18 126.2392 313.13 -162.30 0.04087 0.1601 665.33 419.0 15.884 0.3657 135 propylcyclohexane C9H18 126.2392 314.07 -138.91 0.04453 0.1704 675.77 414.8 16.235 0.3262 136 methylcyclooctane C9H18 126.2392 324.69 58.91 0.04307 0.1580 712.13 436.0 15.858 0.2725 137 2,2,4,4-tetramethylpentane C9H20 128.2551 252.03 -87.75 0.2319 0.7304 574.63 360.4 15.062 0.3119 138 2,2,5-trimethylhexane C9H20 128.2551 255.23 -158.55 0.1881 0.6224 566.12 356.4 14.569 0.3641 139 2,2,4-trimethylhexane C9H20 128.2551 260.00 -188.41 0.1811 0.5918 584.33 368.4 14.857 0.3287 140 2,4,4-trimethylhexane C9H20 128.2551 267.12 -172.05 0.1532 0.5079 616.73 429.0 15.114 0.3013 141 2,3,5-trimethylhexane C9H20 128.2551 267.54 -198.20 0.1443 0.4871 584.69 352.2 14.956 0.3550 142 2,4-dimethylheptane C9H20 128.2551 270.47 0.1244 0.4337 578.75 342.2 14.769 0.3882 143 2,2-dimethylheptane C9H20 128.2551 270.71 -171.49 0.1220 0.4265 578.30 340.8 14.683 0.3901 144 2,2,3-trimethylhexane C9H20 128.2551 272.74 0.1275 0.4358 593.33 353.9 14.657 0.3520 145 2,6-dimethylheptane C9H20 128.2551 274.36 -153.62 0.1099 0.3896 581.99 342.0 14.622 0.3987 146 2,5-dimethylheptane C9H20 128.2551 274.76 0.1129 0.3966 585.59 342.1 14.633 0.3848 147 3,5-dimethylheptane C9H20 128.2551 275.86 0.1085 0.3833 586.49 341.1 14.827 0.3866 148 3,3-dimethylheptane C9H20 128.2551 278.06 0.1147 0.3949 597.83 343.2 14.950 0.3525 149 2,3,3-trimethylhexane C9H20 128.2551 278.74 -178.20 0.1046 0.3682 602.33 364.9 15.126 0.3633 150 2,3,4-trimethylhexane C9H20 128.2551 281.39 0.1103 0.3782 613.31 362.3 15.205 0.3302 151 2,2,3,3-tetramethylpentane C9H20 128.2551 284.44 14.45 0.1052 0.3621 633.85 397.7 15.590 0.3044

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 8

Notes a b c b h Molar

Mass Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

14.696 psia 60 °F 100 °F Temp. Pressure Density

Compound Formula °F psia °F psia lbm/ft3 - 152 3,4-dimethylheptane C9H20 128.2551 284.56 0.08233 0.3022 598.73 350.9 14.981 0.3998 153 2,3-dimethylheptane C9H20 128.2551 285.11 0.07988 0.2949 598.55 351.2 14.862 0.4045 154 4-methyloctane C9H20 128.2551 287.71 -176.71 0.05103 0.2117 574.97 343.2 15.082 0.5319 155 2-methyloctane C9H20 128.2551 289.34 -112.56 0.06224 0.2419 589.43 333.9 14.621 0.4550 156 3-methyloctane C9H20 128.2551 290.94 -162.35 0.07028 0.2625 607.19 351.1 14.842 0.4027 157 naphthalene C10H8 128.1705 424.38 176.40 0.00241 0.01237 887.33 585.8 19.627 0.3024 158 tert-butylbenzene C10H14 134.2182 336.39 -72.11 0.02298 0.09502 706.87 434.9 17.505 0.3513 159 isobutylbenzene C10H14 134.2182 342.90 -60.88 0.02004 0.08438 710.84 441.8 16.996 0.3794 160 sec-butylbenzene C10H14 134.2182 343.93 -103.85 0.01917 0.08057 714.83 426.5 17.105 0.3549 161 1-methyl-3-isopropylbenzene C10H14 134.2182 347.06 -82.79 0.01667 0.07151 713.93 416.8 17.103 0.3656 162 1-methyl-4-isopropylbenzene C10H14 134.2182 350.82 -90.49 0.01511 0.06506 717.16 406.0 16.996 0.3635 163 1-methyl-2-isopropylbenzene C10H14 134.2182 352.59 -96.75 0.01515 0.06535 722.93 415.6 17.353 0.3615 164 1,3-diethylbenzene C10H14 134.2182 358.02 -119.07 0.01137 0.05145 718.25 400.3 17.043 0.3945 165 1-methyl-3-propylbenzene C10H14 134.2182 358.91 -116.57 0.01511 0.06409 720.05 366.0 16.997 0.3552 166 butylbenzene C10H14 134.2182 361.90 -126.05 0.01076 0.04868 729.20 418.7 16.837 0.3927 167 1-methyl-4-propylbenzene C10H14 134.2182 362.02 -82.62 0.01121 0.04986 723.65 384.2 16.922 0.3788 168 1,2-diethylbenzene C10H14 134.2182 362.16 -24.54 0.01020 0.04676 727.25 411.2 17.325 0.3940 169 1,4-diethylbenzene C10H14 134.2182 362.73 -45.89 0.01012 0.04662 724.55 405.8 16.976 0.4026 170 1-methyl-2-propylbenzene C10H14 134.2182 364.24 -76.56 0.01245 0.05429 729.77 379.7 17.206 0.3627 171 1,4-dimethyl-2-ethylbenzene C10H14 134.2182 367.26 -64.66 0.00855 0.04055 730.13 412.5 17.224 0.4132 172 1,2-dimethyl-4-ethylbenzene C10H14 134.2182 372.77 -88.38 0.00663 0.03237 737.33 417.8 17.139 0.4215 173 1,3-dimethyl-2-ethylbenzene C10H14 134.2182 374.10 2.61 0.00740 0.03491 748.13 421.9 17.469 0.3905 174 1,2-dimethyl-3-ethylbenzene C10H14 134.2182 380.95 -57.10 0.00592 0.02878 757.13 424.8 17.455 0.3970 175 1,2,4,5-tetramethylbenzene C10H14 134.2182 386.80 174.56 0.00497 0.02417 756.55 418.2 17.146 0.4257 176 1,2,3,5-tetramethylbenzene C10H14 134.2182 388.71 -10.88 0.00406 0.02054 762.89 429.6 17.358 0.4226 177 1,2,3,4-tetramethylbenzene C10H14 134.2182 400.72 19.87 0.00338 0.01711 784.13 450.5 17.430 0.4284 178 tert-butylcyclohexane C10H20 140.2658 340.82 -42.11 0.02405 0.09764 713.93 409.7 16.312 0.3258 179 butylcyclohexane C10H20 140.2658 357.71 -102.43 0.01318 0.05779 715.91 370.7 16.024 0.3698 180 cyclodecane C10H20 140.2658 396.17 50.63 0.00604 0.02773 816.53 467.9 16.925 0.3063 181 isobutylcyclohexane C10H20 140.2658 625.73 343.2 16.201 182 2,2-dimethyloctane C10H22 142.2817 309.82 0.04194 0.1664 614.57 309.4 14.661 0.4361 183 3,6-dimethyloctane C10H22 142.2817 312.52 0.04726 0.1796 632.93 318.6 14.914 0.3814 184 3,3-dimethyloctane C10H22 142.2817 320.77 0.03807 0.1482 640.13 312.7 14.899 0.3928 185 2,3-dimethyloctane C10H22 142.2817 327.64 0.02449 0.1038 640.31 320.6 14.799 0.4488 186 5-methylnonane C10H22 142.2817 327.78 -123.53 0.01959 0.08796 627.35 315.5 14.751 0.5074 187 3-ethyloctane C10H22 142.2817 329.46 0.02752 0.1125 651.11 320.2 15.245 0.4096 188 4-methylnonane C10H22 142.2817 330.42 -145.16 0.01574 0.07472 613.13 299.0 14.778 0.5790 189 2-methylnonane C10H22 142.2817 332.40 -101.76 0.01506 0.07086 623.21 304.5 14.547 0.5470

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 9

Notes a b c b h Molar

Mass Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

14.696 psia 60 °F 100 °F Temp. Pressure Density

Compound Formula °F psia °F psia lbm/ft3 - 190 3-methylnonane C10H22 142.2817 333.70 -120.39 0.02008 0.08695 645.89 314.3 14.783 0.4536 191 (2-methylbutyl)benzene C11H16 148.2447 384.50 0.00633 0.03073 748.13 387.4 16.822 0.4136 192 1-tert-butyl-2-methylbenzene C11H16 148.2447 392.79 -58.50 0.00745 0.03316 784.13 382.7 17.439 0.3190 193 pentylbenzene C11H16 148.2447 397.20 -108.78 0.00335 0.01755 755.33 373.9 16.616 0.4428 194 n-undecane C11H24 156.3083 384.41 -14.10 0.00395 0.02114 690.17 288.7 14.782 0.5390 195 1-tert-butyl-3,5-dimethylbenzene C12H18 162.2713 405.17 -0.85 0.00252 0.01355 767.93 383.5 16.809 0.4487 196 1,3,5-triethylbenzene C12H18 162.2713 420.39 -87.50 0.00138 0.00816 762.53 336.8 16.231 0.5058 197 1,2,4-triethylbenzene C12H18 162.2713 423.35 0.00150 0.00863 773.33 338.1 16.838 0.4772 198 hexylbenzene C12H18 162.2713 438.32 -82.21 0.00096 0.00582 791.33 344.1 16.256 0.4967 199 n-dodecane C12H26 170.3348 421.32 14.81 0.00114 0.00712 724.91 263.5 14.143 0.5742 200 n-tridecane C13H28 184.3614 455.82 22.36 0.00035 0.00253 756.93 242.5 14.242 0.6081 201 n-tetradecane C14H30 198.3880 488.38 42.57 0.00011 0.00089 786.80 227.1 14.241 0.6458 202 n-pentadecane C15H32 212.4146 519.14 49.91 0.00004 0.00033 812.72 209.4 14.152 0.6837 203 n-hexadecane C16H34 226.4412 548.55 64.72 0.00001 0.00010 840.37 208.0 14.084 0.7323

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Page 14: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 10

Notes b,d e f b,d,g

Density of Liquid Density of Ideal Gas Volume Relative

density (60 °F/60 °F)

API gravity Absolute

Temp. coef. of density

Relative density Volume Density Liquid

ft3 ideal gas/gal liq.

Ratio, ideal

gas/liquid 60 °F, 14.696 psia 60 °F, sat. 60 °F, 14.696 psia 60 °F, 14.696 psia

Compound - - lbm/gal 1/°F - ft3/lbm lbm/1000 ft3 gal/lbmol ft3/gal - 1 methane 0.3 340 2.5 0.5539 23.6549 42.27 6.417 59.138 442.38 2 ethane 0.35628 265.66 2.9704 -0.00733 1.0382 12.6204 79.24 10.123 37.488 280.43 3 propane 0.50719 147.49 4.2285 -0.00167 1.5225 8.6059 116.20 10.428 36.391 272.22 4 isobutane 0.56283 119.91 4.6925 -0.00121 2.0068 6.5290 153.16 12.386 30.637 229.18 5 n-butane 0.58420 110.71 4.8706 -0.00108 2.0068 6.5290 153.16 11.933 31.801 237.89 6 isopentane 0.62514 94.848 5.2120 -0.00089 2.4911 5.2597 190.12 13.843 27.414 205.07 7 n-pentane 0.63071 92.850 5.2584 -0.00086 2.4911 5.2597 190.12 13.721 27.658 206.89 8 n-hexane 0.66406 81.582 5.5364 -0.00076 2.9754 4.4036 227.09 15.565 24.380 182.38 9 n-heptane 0.68823 74.101 5.7379 -0.00068 3.4597 3.7872 264.05 17.463 21.730 162.56 10 n-octane 0.70655 68.768 5.8907 -0.00063 3.9440 3.3221 301.01 19.391 19.570 146.39 11 n-nonane 0.72224 64.418 6.0215 -0.00061 4.4283 2.9588 337.97 21.300 17.816 133.28 12 n-decane 0.73458 61.127 6.1244 -0.00059 4.9126 2.6671 374.93 23.232 16.334 122.19 13 ethylene 0.56820 117.53 4.7372 0.9686 13.5273 73.92 5.9219 64.081 479.36 14 propylene 0.52260 139.260 4.3571 -0.00180 1.4529 9.0182 110.89 9.6578 39.293 293.93 15 carbon dioxide 0.81716 41.660 6.8129 -0.00801 1.5195 8.6227 115.97 6.4598 58.746 439.45 16 hydrogen sulfide 0.79886 45.628 6.6602 -0.00171 1.1767 11.1348 89.81 5.1171 74.16 554.76 17 nitrogen 0.80687 43.868 6.7271 0.9672 13.5465 73.82 4.1643 91.128 681.69 18 oxygen 1.1423 -7.630 9.5238 1.1048 11.8593 84.322 3.3599 112.95 844.89 19 helium 0.12479 1002.4 1.0404 0.1382 94.8090 10.55 3.8471 98.641 737.88 20 water 1.00000 10.000 8.3372 -0.00009 0.62202 21.0645 47.473 2.1608 175.62 1313.7 21 hydrogen 0.070918 1863.8 0.59126 0.0696 188.247 5.31 3.4095 111.30 832.60 22 carbon monoxide 0.79399 46.714 6.6197 0.9671 13.5481 73.81 4.2313 89.684 670.88 23 hydrogen chloride 0.85911 33.205 7.1625 -0.00372 1.2589 10.4079 96.08 5.0905 74.547 557.65 24 carbonyl sulfide 1.0181 7.4844 8.4879 2.0742 6.3168 158.31 7.0778 53.616 401.08 25 chlorine 1.3365 -25.626 11.143 2.4482 5.3519 186.85 6.3634 59.636 446.11 26 ammonia 0.61730 97.724 5.1466 -0.00132 0.5880 22.2825 44.88 3.3091 114.68 857.85 27 sulfur dioxide 1.3952 -30.081 11.632 -0.00109 2.2120 5.9235 168.82 5.5077 68.901 515.41 28 methanol 0.79595 46.275 6.6360 -0.00065 1.1063 11.8433 84.44 4.8285 78.592 587.91 29 ethanol 0.79400 46.712 6.6197 -0.00060 1.5906 8.2374 121.40 6.9593 54.529 407.90 30 ethyne 0.42323 202.83 3.5286 0.8990 14.5746 68.61 7.3790 51.427 384.70 31 1,2-propadiene 0.59528 106.20 4.9629 1.3833 9.4719 105.57 8.0726 47.009 351.65 32 1-propyne 0.62733 94.059 5.2302 -0.00145 1.3833 9.4719 105.57 7.6601 49.540 370.59 33 1,3-butadiene 0.62670 94.286 5.2249 1.8676 7.0157 142.54 10.352 36.656 274.21 34 1,2-butadiene 0.65941 83.086 5.4976 1.8676 7.0157 142.54 9.8388 38.570 288.52 35 2-methylpropene 0.60064 104.08 5.0077 -0.00113 1.9372 6.7636 147.85 11.204 33.870 253.37 36 1-butene 0.60044 104.16 5.0060 -0.00114 1.9372 6.7636 147.85 11.208 33.858 253.28

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Page 15: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 11

Notes b,d e f b,d,g Density of Liquid Density of Ideal Gas Volume

Relative density (60

°F/60 °F) API

gravity Absolute

Temp. coef. of density

Relative density Volume Density Liquid

ft3 ideal gas/gal liq.

Ratio, ideal

gas/liquid 60 °F, 14.696 psia 60 °F, sat. 60 °F, 14.696 psia 60 °F, 14.696 psia

Compound - - lbm/gal 1/°F - ft3/lbm lbm/1000 ft3 gal/lbmol ft3/gal - 37 (E)-2-butene 0.61030 100.35 5.0882 -0.00107 1.9372 6.7636 147.85 11.027 34.415 257.44 38 (Z)-2-butene 0.62716 94.120 5.2287 -0.00104 1.9372 6.7636 147.85 10.730 35.365 264.55 39 2-methyl-1,3-butadiene 0.68510 75.039 5.7118 2.3519 5.5710 179.50 11.926 31.821 238.04 40 3-methyl-1-butene 0.63427 91.591 5.2880 2.4215 5.4109 184.81 13.263 28.613 214.04 41 1-pentene 0.64631 87.435 5.3884 2.4215 5.4109 184.81 13.015 29.156 218.10 42 2-methyl-1-butene 0.65579 84.270 5.4675 2.4215 5.4109 184.81 12.827 29.584 221.30 43 (E)-2-pentene 0.65313 85.149 5.4453 2.4215 5.4109 184.81 12.880 29.464 220.41 44 (Z)-2-pentene 0.65940 83.089 5.4975 2.4215 5.4109 184.81 12.757 29.747 222.52 45 2-methyl-2-butene 0.66430 81.506 5.5384 2.4215 5.4109 184.81 12.663 29.968 224.17 46 cyclopentane 0.75047 57.049 6.2568 -0.00072 2.4215 5.4109 184.81 11.209 33.855 253.25 47 2,2-dimethylpropane 0.59530 106.20 4.9631 -0.00101 2.4911 5.2597 190.12 14.537 26.105 195.28 48 benzene 0.88444 28.488 7.3738 -0.00066 2.6970 4.8582 205.84 10.593 35.823 267.98 49 methylcyclopentane 0.75368 56.245 6.2836 -0.00069 2.9058 4.5091 221.77 13.394 28.333 211.95 50 cyclohexane 0.78362 49.072 6.5332 -0.00066 2.9058 4.5091 221.77 12.882 29.459 220.37 51 2,2-dimethylbutane 0.65403 84.851 5.4528 -0.00077 2.9754 4.4036 227.09 15.804 24.012 179.62 52 2,3-dimethylbutane 0.66599 80.966 5.5525 -0.00073 2.9754 4.4036 227.09 15.520 24.451 182.91 53 2-methylpentane 0.65786 83.591 5.4847 -0.00077 2.9754 4.4036 227.09 15.712 24.153 180.67 54 3-methylpentane 0.66914 79.965 5.5787 -0.00075 2.9754 4.4036 227.09 15.447 24.567 183.77 55 toluene 0.87188 30.793 7.2690 -0.00059 3.1813 4.1186 242.80 12.676 29.938 223.95 56 1,1-dimethylcyclopentane 0.75922 54.875 6.3297 -0.00064 3.3901 3.8649 258.74 15.512 24.464 183.00 57 trans-1,3-dimethylcyclopentane 0.75350 56.290 6.2821 -0.00064 3.3901 3.8649 258.74 15.630 24.280 181.63 58 cis-1,3-dimethylcyclopentane 0.74952 57.287 6.2489 -0.00070 3.3901 3.8649 258.74 15.713 24.152 180.67 59 trans-1,2-dimethylcyclopentane 0.75608 55.650 6.3036 -0.00065 3.3901 3.8649 258.74 15.576 24.363 182.25 60 cis-1,2-dimethylcyclopentane 0.77729 50.543 6.4804 -0.00064 3.3901 3.8649 258.74 15.151 25.047 187.36 61 methylcyclohexane 0.77403 51.309 6.4532 -0.00062 3.3901 3.8649 258.74 15.215 24.941 186.57 62 ethylcyclopentane 0.77102 52.023 6.4282 -0.00062 3.3901 3.8649 258.74 15.274 24.844 185.85 63 cycloheptane 0.81587 41.934 6.8021 -0.00054 3.3901 3.8649 258.74 14.435 26.290 196.66 64 2,2-dimethylpentane 0.67835 77.094 5.6556 -0.00070 3.4597 3.7872 264.05 17.717 21.419 160.22 65 2,4-dimethylpentane 0.67726 77.430 5.6465 -0.00072 3.4597 3.7872 264.05 17.746 21.384 159.97 66 2,2,3-trimethylbutane 0.69454 72.232 5.7905 -0.00068 3.4597 3.7872 264.05 17.305 21.930 164.05 67 3,3-dimethylpentane 0.69831 71.132 5.8220 -0.00058 3.4597 3.7872 264.05 17.211 22.049 164.94 68 2,3-dimethylpentane 0.69941 70.813 5.8312 -0.00066 3.4597 3.7872 264.05 17.184 22.084 165.20 69 2-methylhexane 0.68328 75.589 5.6966 -0.00070 3.4597 3.7872 264.05 17.590 21.574 161.39 70 3-methylhexane 0.69147 73.136 5.7649 -0.00069 3.4597 3.7872 264.05 17.381 21.833 163.32 71 3-ethylpentane 0.70310 69.752 5.8619 -0.00069 3.4597 3.7872 264.05 17.094 22.200 166.07 72 styrene 0.91130 23.773 7.5977 3.5960 3.6436 274.45 13.708 27.683 207.09 73 ethylbenzene 0.87163 30.840 7.2669 -0.00056 3.6656 3.5745 279.76 14.609 25.975 194.31

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 12

Notes b,d e f b,d,g Density of Liquid Density of Ideal Gas Volume

Relative density (60

°F/60 °F) API

gravity Absolute

Temp. coef. of density

Relative density Volume Density Liquid

ft3 ideal gas/gal liq.

Ratio, ideal

gas/liquid 60 °F, 14.696 psia 60 °F, sat. 60 °F, 14.696 psia 60 °F, 14.696 psia

Compound - - lbm/gal 1/°F - ft3/lbm lbm/1000 ft3 gal/lbmol ft3/gal - 74 p-xylene 0.86577 31.938 7.2181 -0.00056 3.6656 3.5745 279.76 14.708 25.801 193.00 75 m-xylene 0.86886 31.357 7.2439 -0.00055 3.6656 3.5745 279.76 14.656 25.893 193.69 76 o-xylene 0.88484 28.416 7.3771 -0.00053 3.6656 3.5745 279.76 14.391 26.369 197.25 77 1,1,3-trimethylcyclopentane 0.75281 56.462 6.2764 -0.00064 3.8744 3.3818 295.70 17.879 21.226 158.78 78 1,trans-2,cis-4-trimethylcyclopentane 0.75180 56.715 6.2679 -0.00063 3.8744 3.3818 295.70 17.903 21.197 158.56 79 r-1,t-2,c-3-trimethylcyclopentane 0.75828 55.107 6.3219 -0.00063 3.8744 3.3818 295.70 17.750 21.380 159.93 80 1,1,2-trimethylcyclopentane 0.77658 50.709 6.4745 -0.00059 3.8744 3.3818 295.70 17.331 21.896 163.79 81 1,cis-2,trans-4-trimethylcyclopentane 0.76794 52.759 6.4024 -0.00061 3.8744 3.3818 295.70 17.527 21.652 161.97 82 r-1,c-2,t-3-trimethylcyclopentane 0.77460 51.175 6.4580 -0.00062 3.8744 3.3818 295.70 17.376 21.840 163.37 83 trans-1,4-dimethylcyclohexane 0.76721 52.935 6.3964 -0.00061 3.8744 3.3818 295.70 17.543 21.631 161.81 84 1,1-dimethylcyclohexane 0.78528 48.691 6.5470 -0.00057 3.8744 3.3818 295.70 17.139 22.141 165.63 85 trans-1,3-dimethylcyclohexane 0.78792 48.087 6.5690 -0.00059 3.8744 3.3818 295.70 17.082 22.215 166.18 86 trans-1-ethyl-3-methylcyclopentane 0.76654 53.096 6.3908 -0.00061 3.8744 3.3818 295.70 17.559 21.612 161.67 87 cis-1-ethyl-3-methylcyclopentane 0.77682 50.653 6.4765 -0.00062 3.8744 3.3818 295.70 17.326 21.902 163.84 88 trans-1-ethyl-2-methylcyclopentane 0.77371 51.385 6.4506 -0.00060 3.8744 3.3818 295.70 17.396 21.815 163.19 89 1-ethyl-1-methylcyclopentane 0.78533 48.679 6.5474 -0.00059 3.8744 3.3818 295.70 17.138 22.142 165.64 90 1,cis-2,cis-3-trimethylcyclopentane 0.78275 49.273 6.5260 -0.00058 3.8744 3.3818 295.70 17.195 22.070 165.09 91 cis-1,4-dimethylcyclohexane 0.78725 48.240 6.5634 -0.00058 3.8744 3.3818 295.70 17.097 22.196 166.04 92 cis-1,3-dimethylcyclohexane 0.77108 52.009 6.4286 -0.00059 3.8744 3.3818 295.70 17.455 21.740 162.63 93 isopropylcyclopentane 0.78076 49.734 6.5093 -0.00056 3.8744 3.3818 295.70 17.239 22.013 164.67 94 cis-1-ethyl-2-methylcyclopentane 0.78960 47.705 6.5830 -0.00056 3.8744 3.3818 295.70 17.046 22.263 166.54 95 cis-1,2-dimethylcyclohexane 0.80092 45.172 6.6774 -0.00056 3.8744 3.3818 295.70 16.805 22.582 168.92 96 propylcyclopentane 0.78063 49.764 6.5082 -0.00058 3.8744 3.3818 295.70 17.242 22.010 164.64 97 ethylcyclohexane 0.79264 47.017 6.6084 -0.00057 3.8744 3.3818 295.70 16.980 22.348 167.18 98 cyclooctane 0.84074 36.804 7.0094 -0.00053 3.8744 3.3818 295.70 16.009 23.705 177.32 99 2,2,4-trimethylpentane 0.69635 71.702 5.8056 -0.00065 3.9440 3.3221 301.01 19.676 19.287 144.28 100 2,2-dimethylhexane 0.69973 70.721 5.8338 -0.00066 3.9440 3.3221 301.01 19.581 19.381 144.98 101 2,5-dimethylhexane 0.69833 71.126 5.8221 -0.00066 3.9440 3.3221 301.01 19.620 19.342 144.69 102 2,4-dimethylhexane 0.70366 69.591 5.8666 -0.00063 3.9440 3.3221 301.01 19.471 19.490 145.79 103 2,2,3-trimethylpentane 0.71993 65.047 6.0022 -0.00060 3.9440 3.3221 301.01 19.031 19.940 149.16 104 3,3-dimethylhexane 0.71395 66.693 5.9524 -0.00062 3.9440 3.3221 301.01 19.190 19.775 147.92 105 2,3,4-trimethylpentane 0.72300 64.212 6.0278 -0.00060 3.9440 3.3221 301.01 18.950 20.025 149.80 106 2,3-dimethylhexane 0.71686 65.889 5.9766 -0.00061 3.9440 3.3221 301.01 19.113 19.855 148.53 107 2-methylheptane 0.70196 70.078 5.8524 -0.00065 3.9440 3.3221 301.01 19.518 19.442 145.44 108 4-methylheptane 0.70885 68.119 5.9099 -0.00064 3.9440 3.3221 301.01 19.328 19.633 146.87 109 3,4-dimethylhexane 0.72320 64.158 6.0294 -0.00061 3.9440 3.3221 301.01 18.945 20.031 149.84 110 3-ethylhexane 0.71746 65.724 5.9816 -0.00062 3.9440 3.3221 301.01 19.097 19.872 148.65

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Page 17: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 13

Notes b,d e f b,d,g Density of Liquid Density of Ideal Gas Volume

Relative density (60

°F/60 °F) API

gravity Absolute

Temp. coef. of density

Relative density Volume Density Liquid

ft3 ideal gas/gal liq.

Ratio, ideal

gas/liquid 60 °F, 14.696 psia 60 °F, sat. 60 °F, 14.696 psia 60 °F, 14.696 psia

Compound - - lbm/gal 1/°F - ft3/lbm lbm/1000 ft3 gal/lbmol ft3/gal - 111 3-methylheptane 0.70987 67.832 5.9183 -0.00063 3.9440 3.3221 301.01 19.301 19.661 147.08 112 isopropylbenzene 0.86670 31.763 7.2259 -0.00055 4.1499 3.1573 316.72 16.634 22.814 170.66 113 propylbenzene 0.86653 31.795 7.2245 -0.00053 4.1499 3.1573 316.72 16.637 22.810 170.63 114 m-ethyltoluene 0.86899 31.333 7.2449 -0.00055 4.1499 3.1573 316.72 16.590 22.875 171.11 115 p-ethyltoluene 0.86596 31.902 7.2197 -0.00055 4.1499 3.1573 316.72 16.648 22.795 170.52 116 1,3,5-trimethylbenzene 0.86954 31.230 7.2495 -0.00054 4.1499 3.1573 316.72 16.579 22.889 171.22 117 o-ethyltoluene 0.88537 28.320 7.3815 -0.00052 4.1499 3.1573 316.72 16.283 23.306 174.34 118 1,2,4-trimethylbenzene 0.88031 29.239 7.3393 -0.00050 4.1499 3.1573 316.72 16.376 23.173 173.34 119 1,2,3-trimethylbenzene 0.89871 25.948 7.4927 -0.00049 4.1499 3.1573 316.72 16.041 23.657 176.97 120 1,1,4-trimethylcyclohexane 0.77572 50.911 6.4673 -0.00054 4.3587 3.0061 332.66 19.520 19.441 145.43 121 1,1,3-trimethylcyclohexane 0.78302 49.211 6.5282 -0.00054 4.3587 3.0061 332.66 19.338 19.624 146.80 122 r-1,c-3,c-5-trimethylcyclohexane 0.77439 51.224 6.4562 -0.00057 4.3587 3.0061 332.66 19.553 19.408 145.18 123 r-1,c-3,t-5-trimethylcyclohexane 0.78345 49.111 6.5318 -0.00052 4.3587 3.0061 332.66 19.327 19.635 146.88 124 trans,trans-1,2,4-trimethylcyclohexane 0.77843 50.276 6.4899 -0.00056 4.3587 3.0061 332.66 19.452 19.509 145.94 125 cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane 0.79129 47.322 6.5972 -0.00056 4.3587 3.0061 332.66 19.135 19.832 148.35 126 r-1,t-2,c-3-trimethylcyclohexane 0.79134 47.311 6.5976 -0.00057 4.3587 3.0061 332.66 19.134 19.833 148.36 127 r-1,t-2,t-4-trimethylcyclohexane 0.79005 47.603 6.5868 -0.00053 4.3587 3.0061 332.66 19.165 19.800 148.12 128 cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane 0.79556 46.362 6.6328 -0.00056 4.3587 3.0061 332.66 19.033 19.939 149.15 129 1,1,2-trimethylcyclohexane 0.80285 44.747 6.6935 -0.00051 4.3587 3.0061 332.66 18.860 20.121 150.52 130 isobutylcyclopentane 0.78481 48.798 6.5431 -0.00057 4.3587 3.0061 332.66 19.293 19.669 147.13 131 cis,cis-1,2,3-trimethylcyclohexane 0.80685 43.873 6.7268 -0.00055 4.3587 3.0061 332.66 18.766 20.221 151.27 132 cis-1,2,trans-1,3-cyclohexane 0.80736 43.763 6.7311 -0.00055 4.3587 3.0061 332.66 18.755 20.234 151.36 133 isopropylcyclohexane 0.80630 43.993 6.7223 -0.00053 4.3587 3.0061 332.66 18.779 20.208 151.16 134 butylcyclopentane 0.78875 47.898 6.5760 -0.00056 4.3587 3.0061 332.66 19.197 19.768 147.87 135 propylcyclohexane 0.79813 45.789 6.6541 -0.00055 4.3587 3.0061 332.66 18.972 20.003 149.63 136 methylcyclooctane 0.83784 37.387 6.9852 -0.00050 4.3587 3.0061 332.66 18.072 20.998 157.08 137 2,2,4,4-tetramethylpentane 0.72370 64.023 6.0336 -0.00060 4.4283 2.9588 337.97 21.257 17.852 133.54 138 2,2,5-trimethylhexane 0.71140 67.404 5.9311 -0.00063 4.4283 2.9588 337.97 21.624 17.549 131.28 139 2,2,4-trimethylhexane 0.71972 65.104 6.0005 -0.00059 4.4283 2.9588 337.97 21.374 17.754 132.81 140 2,4,4-trimethylhexane 0.72791 62.892 6.0687 -0.00059 4.4283 2.9588 337.97 21.134 17.956 134.32 141 2,3,5-trimethylhexane 0.72608 63.382 6.0535 -0.00061 4.4283 2.9588 337.97 21.187 17.911 133.98 142 2,4-dimethylheptane 0.71896 65.312 5.9941 -0.00058 4.4283 2.9588 337.97 21.397 17.735 132.67 143 2,2-dimethylheptane 0.71469 66.488 5.9585 -0.00060 4.4283 2.9588 337.97 21.525 17.630 131.88 144 2,2,3-trimethylhexane 0.73597 60.763 6.1360 4.4283 2.9588 337.97 20.902 18.155 135.81 145 2,6-dimethylheptane 0.71424 66.613 5.9548 -0.00060 4.4283 2.9588 337.97 21.538 17.619 131.80 146 2,5-dimethylheptane 0.72071 64.834 6.0087 -0.00059 4.4283 2.9588 337.97 21.345 17.779 132.99 147 3,5-dimethylheptane 0.72414 63.904 6.0373 -0.00059 4.4283 2.9588 337.97 21.244 17.863 133.63

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Page 18: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 14

Notes b,d e f b,d,g Density of Liquid Density of Ideal Gas Volume

Relative density (60

°F/60 °F) API

gravity Absolute

Temp. coef. of density

Relative density Volume Density Liquid

ft3 ideal gas/gal liq.

Ratio, ideal

gas/liquid 60 °F, 14.696 psia 60 °F, sat. 60 °F, 14.696 psia 60 °F, 14.696 psia

Compound - - lbm/gal 1/°F - ft3/lbm lbm/1000 ft3 gal/lbmol ft3/gal - 148 3,3-dimethylheptane 0.73018 62.288 6.0876 -0.00060 4.4283 2.9588 337.97 21.068 18.012 134.74 149 2,3,3-trimethylhexane 0.73889 60.003 6.1602 -0.00062 4.4283 2.9588 337.97 20.820 18.227 136.35 150 2,3,4-trimethylhexane 0.74239 59.101 6.1894 -0.00058 4.4283 2.9588 337.97 20.722 18.313 136.99 151 2,2,3,3-tetramethylpentane 0.76065 54.525 6.3417 -0.00054 4.4283 2.9588 337.97 20.224 18.764 140.36 152 3,4-dimethylheptane 0.73564 60.850 6.1332 -0.00056 4.4283 2.9588 337.97 20.912 18.147 135.75 153 2,3-dimethylheptane 0.72941 62.492 6.0813 -0.00059 4.4283 2.9588 337.97 21.090 17.993 134.60 154 4-methyloctane 0.72614 63.366 6.0539 -0.00059 4.4283 2.9588 337.97 21.185 17.912 133.99 155 2-methyloctane 0.71733 65.759 5.9805 -0.00060 4.4283 2.9588 337.97 21.445 17.695 132.37 156 3-methyloctane 0.72482 63.721 6.0430 -0.00059 4.4283 2.9588 337.97 21.224 17.880 133.75 157 naphthalene 1.0301 5.8653 8.5880 4.4254 2.9608 337.75 14.924 25.427 190.21 158 tert-butylbenzene 0.87096 30.964 7.2614 -0.00053 4.6342 2.8274 353.69 18.484 20.531 153.58 159 isobutylbenzene 0.85739 33.536 7.1482 -0.00052 4.6342 2.8274 353.69 18.776 20.211 151.19 160 sec-butylbenzene 0.86656 31.789 7.2247 -0.00047 4.6342 2.8274 353.69 18.578 20.427 152.80 161 1-methyl-3-isopropylbenzene 0.86529 32.029 7.2141 -0.00051 4.6342 2.8274 353.69 18.605 20.397 152.58 162 1-methyl-4-isopropylbenzene 0.86123 32.800 7.1802 -0.00052 4.6342 2.8274 353.69 18.693 20.301 151.86 163 1-methyl-2-isopropylbenzene 0.88026 29.248 7.3389 -0.00050 4.6342 2.8274 353.69 18.288 20.750 155.22 164 1,3-diethylbenzene 0.86826 31.470 7.2389 -0.00052 4.6342 2.8274 353.69 18.541 20.467 153.10 165 1-methyl-3-propylbenzene 0.86565 31.961 7.2171 -0.00051 4.6342 2.8274 353.69 18.597 20.405 152.64 166 butylbenzene 0.86459 32.161 7.2083 -0.00052 4.6342 2.8274 353.69 18.620 20.380 152.46 167 1-methyl-4-propylbenzene 0.86279 32.503 7.1933 -0.00052 4.6342 2.8274 353.69 18.659 20.338 152.14 168 1,2-diethylbenzene 0.88436 28.503 7.3731 -0.00050 4.6342 2.8274 353.69 18.204 20.846 155.94 169 1,4-diethylbenzene 0.86628 31.842 7.2224 -0.00056 4.6342 2.8274 353.69 18.584 20.420 152.75 170 1-methyl-2-propylbenzene 0.87830 29.607 7.3225 -0.00049 4.6342 2.8274 353.69 18.329 20.703 154.87 171 1,4-dimethyl-2-ethylbenzene 0.88175 28.976 7.3513 -0.00057 4.6342 2.8274 353.69 18.258 20.785 155.48 172 1,2-dimethyl-4-ethylbenzene 0.87850 29.570 7.3243 -0.00051 4.6342 2.8274 353.69 18.325 20.708 154.91 173 1,3-dimethyl-2-ethylbenzene 0.89483 26.631 7.4604 -0.00050 4.6342 2.8274 353.69 17.991 21.093 157.79 174 1,2-dimethyl-3-ethylbenzene 0.89635 26.362 7.4731 -0.00050 4.6342 2.8274 353.69 17.960 21.129 158.06 175 1,2,4,5-tetramethylbenzene 0.89076 27.353 7.4264 -0.00056 4.6342 2.8274 353.69 18.073 20.997 157.07 176 1,2,3,5-tetramethylbenzene 0.89453 26.684 7.4579 -0.00047 4.6342 2.8274 353.69 17.997 21.086 157.73 177 1,2,3,4-tetramethylbenzene 0.90916 24.138 7.5799 -0.00049 4.6342 2.8274 353.69 17.707 21.431 160.31 178 tert-butylcyclohexane 0.81678 41.741 6.8097 -0.00053 4.8430 2.7055 369.62 20.598 18.423 137.82 179 butylcyclohexane 0.80333 44.642 6.6975 -0.00054 4.8430 2.7055 369.62 20.943 18.120 135.55 180 cyclodecane 0.86315 32.434 7.1963 -0.00051 4.8430 2.7055 369.62 19.491 19.469 145.64 181 isobutylcyclohexane 0.79958 45.468 6.6662 -0.00054 4.8430 2.7055 369.62 21.041 18.035 134.91 182 2,2-dimethyloctane 0.72883 62.647 6.0764 -0.00056 4.9126 2.6671 374.94 23.415 16.207 121.23 183 3,6-dimethyloctane 0.73971 59.791 6.1671 -0.00061 4.9126 2.6671 374.94 23.071 16.448 123.04 184 3,3-dimethyloctane 0.74287 58.977 6.1935 -0.00056 4.9126 2.6671 374.94 22.973 16.519 123.57

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 15

Notes b,d e f b,d,g Density of Liquid Density of Ideal Gas Volume

Relative density (60

°F/60 °F) API

gravity Absolute

Temp. coef. of density

Relative density Volume Density Liquid

ft3 ideal gas/gal liq.

Ratio, ideal

gas/liquid 60 °F, 14.696 psia 60 °F, sat. 60 °F, 14.696 psia 60 °F, 14.696 psia

Compound - - lbm/gal 1/°F - ft3/lbm lbm/1000 ft3 gal/lbmol ft3/gal - 185 2,3-dimethyloctane 0.74217 59.157 6.1876 -0.00057 4.9126 2.6671 374.94 22.995 16.503 123.45 186 5-methylnonane 0.73615 60.716 6.1375 -0.00057 4.9126 2.6671 374.94 23.183 16.369 122.45 187 3-ethyloctane 0.76210 54.171 6.3538 -0.00057 4.9126 2.6671 374.94 22.393 16.946 126.77 188 4-methylnonane 0.73616 60.714 6.1375 -0.00064 4.9126 2.6671 374.94 23.182 16.369 122.45 189 2-methylnonane 0.73054 62.192 6.0907 -0.00057 4.9126 2.6671 374.94 23.361 16.245 121.52 190 3-methylnonane 0.73718 60.448 6.1460 -0.00057 4.9126 2.6671 374.94 23.150 16.392 122.62 191 (2-methylbutyl)benzene 0.86394 32.285 7.2028 -0.00051 5.1185 2.5598 390.65 20.581 18.438 137.93 192 1-tert-butyl-2-methylbenzene 0.89390 26.795 7.4526 -0.00050 5.1185 2.5598 390.65 19.892 19.077 142.71 193 pentylbenzene 0.86352 32.364 7.1994 -0.00050 5.1185 2.5598 390.65 20.591 18.429 137.86 194 n-undecane 0.74442 58.581 6.2064 -0.00057 5.3969 2.4278 411.90 25.185 15.068 112.72 195 1-tert-butyl-3,5-dimethylbenzene 0.86953 31.232 7.2494 -0.00052 5.6028 2.3386 427.61 22.384 16.953 126.82 196 1,3,5-triethylbenzene 0.86651 31.799 7.2243 -0.00053 5.6028 2.3386 427.61 22.462 16.895 126.38 197 1,2,4-triethylbenzene 0.88266 28.811 7.3590 -0.00052 5.6028 2.3386 427.61 22.051 17.209 128.74 198 hexylbenzene 0.86329 32.408 7.1974 -0.00049 5.6028 2.3386 427.61 22.546 16.832 125.91 199 n-dodecane 0.75348 56.295 6.2819 -0.00055 5.8812 2.2279 448.86 27.115 13.995 104.69 200 n-tridecane 0.76030 54.611 6.3388 -0.00052 6.3655 2.0584 485.82 29.085 13.048 97.602 201 n-tetradecane 0.76706 52.971 6.3952 -0.00053 6.8498 1.9128 522.79 31.022 12.233 91.508 202 n-pentadecane 0.77218 51.747 6.4378 -0.00050 7.3341 1.7865 559.75 32.995 11.501 86.035 203 n-hexadecane 0.77735 50.529 6.4809 7.8184 1.6759 596.71 34.940 10.861 81.246

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Page 20: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 16

Notes p b,d,i b,d,i

Summation Factor Compress-ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=14.696 psia Fuel as Liquid Fuel as Ideal gas Fuel as Liquid

Fuel as Ideal gas

60 °F 60 °F 60 °F, ideal reaction Compound 1/psia0.5 - - Btu/lbm Btu/gal Btu/lbm Btu/ft3 Btu/gal Btu/lbm Btu/ft3

1 methane 0.0116 0.04438 23892. 1010.0 59729. 909.4 2 ethane 0.0238 0.0913 0.5788 22185. 65897. 22334. 1769.7 66340. 20281. 1619. 3 propane 0.0347 0.1329 0.8499 21491. 90875. 21654. 2516.1 91563. 19760. 2315. 4 isobutane 0.0441 0.1690 0.9188 21081. 98924. 21232. 3251.9 99630. 19440. 3000. 5 n-butane 0.0470 0.1801 0.9386 21137. 102950. 21300. 3262.3 103740. 19495. 3011. 6 isopentane 0.0576 0.2206 0.9677 20891. 108880. 21044. 4000.9 109680. 19303. 3699. 7 n-pentane 0.0606 0.2323 0.9740 20923. 110020. 21085. 4008.7 110870. 19335. 3707. 8 n-hexane 0.0776 0.2973 0.9884 20783. 115060. 20943. 4755.9 115950. 19233. 4404. 9 n-heptane 0.0951 0.3646 0.9951 20680. 118660. 20839. 5502.6 119570. 19155. 5100. 10 n-octane 0.1128 0.4326 0.9980 20601. 121350. 20760. 6249.0 122290. 19096. 5796. 11 n-nonane 0.1307 0.5009 0.9992 20543. 123700. 20701. 6996.3 124650. 19054. 6493. 12 n-decane 0.1556 0.5967 0.9997 20494. 125510. 20651. 7742.9 126480. 19018. 7190. 13 ethylene 0.0207 0.0795 21640. 1599.7 102515. 1499. 14 propylene 0.0327 0.1254 0.8345 20875. 90954. 21040. 2333.0 91672. 19514. 2182. 15 carbon dioxide 0.0195 0.0748 0.5764 16 hydrogen sulfide 0.0239 0.0917 0.8460 6892.4 45905. 7094.0 637.10 47248. 6332. 586.79 17 nitrogen 0.00442 0.01696 18 oxygen 0.0072 0.02752 19 helium 20 water 0.06510 0.2496 0.9989 1059.8 50.310 8835.4 21 hydrogen 61022. 324.2 36080. 273.9 22 carbon monoxide 0.0056 0.0216 4342. 320.5 28745. 320.5 23 hydrogen chloride 0.0212 0.0811 0.6585 24 carbonyl sulfide 0.0290 0.1110 0.8604 3916. 33240. 3923. 621.0 33296. 3916. 621.0 25 chlorine 0.0333 0.1277 0.8955 3428. 38203. 3436. 642.0 38288. 3428. 642.0 26 ammonia 0.0284 0.1089 0.9031 9139. 47032. 9680. 434.4 49821. 7457. 359.0 27 sulfur dioxide 0.0361 0.1383 0.9426 -2153. -25039. -1992. -336.3 -23169. -2153. -336.3 28 methanol 0.0764 0.2930 0.9803 9749. 64694. 10265. 866.7 68117. 8557. 766.1 29 ethanol 0.0755 0.2896 0.9963 12504. 82771. 12904. 1566.6 85423. 11260. 1416. 30 ethyne 0.0217 0.0833 21484. 75808. 21488. 1474.3 75820. 20751. 1424. 31 1,2-propadiene 0.0321 0.1231 0.9049 20852. 103489. 20860. 2202.3 103527. 19899. 2102. 32 1-propyne 0.0354 0.1359 0.9089 33 1,3-butadiene 0.0455 0.1745 0.9384 20195. 105519. 20205. 2879.9 105567. 19137. 2729. 34 1,2-butadiene 0.0448 0.1717 0.9659 20616. 113338. 20626. 2940.0 113395. 19557. 2789. 35 2-methylpropene 0.0455 0.1744 0.9267 20541. 102861. 20704. 3061.1 103680. 19179. 2860. 36 1-butene 0.0455 0.1744 0.9288 20668. 103461. 20832. 3079.9 104282. 19307. 2879. 37 (E)-2-butene 0.0477 0.1830 0.9396 20579. 104712. 20752. 3068.1 105588. 19218. 2867.

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Page 21: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 17

Notes p b,d,i b,d,i Summation Factor Compress-

ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=14.696 psia Fuel as Liquid Fuel as Ideal gas Fuel as Liquid

Fuel as Ideal gas

60 °F 60 °F 60 °F, ideal reaction Compound 1/psia0.5 - - Btu/lbm Btu/gal Btu/lbm Btu/ft3 Btu/gal Btu/lbm Btu/ft3

38 (Z)-2-butene 0.0478 0.1832 0.9455 20603. 107728. 20780. 3072.3 108652. 19242. 2871. 39 2-methyl-1,3-butadiene 0.0585 0.2244 0.9746 20101. 114813. 20112. 3610.2 114879. 18980. 3409. 40 3-methyl-1-butene 0.0559 0.2142 0.9610 41 1-pentene 0.0593 0.2275 0.9694 20694. 111509. 20705. 3826.6 111569. 19333. 3575. 42 2-methyl-1-butene 0.0581 0.2226 0.9721 43 (E)-2-pentene 0.0601 0.2304 0.9755 44 (Z)-2-pentene 0.0599 0.2297 0.9762 45 2-methyl-2-butene 0.0561 0.2152 0.9803 46 cyclopentane 0.0573 0.2197 0.9861 20186. 126303. 20365. 3763.6 127418. 18825. 3512. 47 2,2-dimethylpropane 0.0519 0.1990 0.9482 20823. 103346. 20959. 3984.8 104022. 19235. 3683. 48 benzene 0.0656 0.2513 0.9949 17989. 132646. 18178. 3741.8 134044. 17256. 3591. 49 methylcyclopentane 0.0630 0.2417 0.9931 20278. 127421. 20292. 4500.3 127508. 18917. 4198. 50 cyclohexane 0.0696 0.2668 0.9941 20037. 130903. 20208. 4481.7 132023. 18676. 4180. 51 2,2-dimethylbutane 0.0610 0.2339 0.9842 20845. 113663. 20857. 4736.3 113729. 19294. 4384. 52 2,3-dimethylbutane 0.0672 0.2575 0.9862 20883. 115952. 20896. 4745.1 116023. 19332. 4393. 53 2-methylpentane 0.0729 0.2795 0.9853 20753. 113826. 20906. 4747.4 114662. 19202. 4395. 54 3-methylpentane 0.0711 0.2724 0.9877 20906. 116627. 20919. 4750.4 116700. 19355. 4398. 55 toluene 0.0872 0.3343 0.9975 18250. 132656. 18430. 4474.7 133965. 17421. 4273. 56 1,1-dimethylcyclopentane 0.0759 0.2908 0.9946 20054. 126937. 20069. 5192.5 127030. 18693. 4840. 57 trans-1,3-dimethylcyclopentane 0.0667 0.2556 0.9963 20071. 126089. 20086. 5197.0 126183. 18710. 4845. 58 cis-1,3-dimethylcyclopentane 0.0850 0.3260 0.9943 20062. 125367. 20077. 5194.7 125460. 18701. 4843. 59 trans-1,2-dimethylcyclopentane 0.0582 0.2231 0.9973 20057. 126433. 20072. 5193.5 126528. 18696. 4841. 60 cis-1,2-dimethylcyclopentane 0.0645 0.2473 0.9976 20083. 130146. 20098. 5200.2 130247. 18722. 4848. 61 methylcyclohexane 0.0862 0.3305 0.9958 20143. 129990. 20159. 5215.8 130090. 18782. 4864. 62 ethylcyclopentane 0.0614 0.2355 0.9982 20265. 130266. 20281. 5247.4 130368. 18904. 4895. 63 cycloheptane 0.0968 0.3711 0.9976 20120. 136856. 20137. 5210.1 136970. 18759. 4858. 64 2,2-dimethylpentane 0.0863 0.3307 0.9902 20586. 116427. 20600. 5439.5 116507. 19062. 5037. 65 2,4-dimethylpentane 0.0821 0.3147 0.9917 20610. 116372. 20624. 5445.7 116453. 19085. 5043. 66 2,2,3-trimethylbutane 0.1159 0.4444 0.9827 20601. 119291. 20615. 5443.4 119372. 19077. 5041. 67 3,3-dimethylpentane 0.0769 0.2946 0.9939 20604. 119954. 20618. 5444.2 120038. 19079. 5042. 68 2,3-dimethylpentane 0.0722 0.2770 0.9956 20619. 120235. 20634. 5448.5 120322. 19095. 5046. 69 2-methylhexane 0.1022 0.3917 0.9917 20630. 117520. 20645. 5451.3 117607. 19106. 5049. 70 3-methylhexane 0.1111 0.4259 0.9908 20643. 119004. 20658. 5454.7 119092. 19119. 5052. 71 3-ethylpentane 0.1034 0.3963 0.9925 20649. 121045. 20665. 5456.5 121135. 19125. 5054. 72 styrene 0.0774 0.2969 0.9996 18124. 137700. 18143. 4979.4 137846. 17391. 4778. 73 ethylbenzene 0.0987 0.3784 0.9990 18493. 134385. 18666. 5222.1 135645. 17594. 4971. 74 p-xylene 0.1072 0.4111 0.9989 18263. 131823. 18437. 5157.9 133078. 17364. 4906. 75 m-xylene 0.1027 0.3935 0.9990 18258. 132256. 18433. 5156.8 133525. 17358. 4905.

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Page 22: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 18

Notes p b,d,i b,d,i Summation Factor Compress-

ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=14.696 psia Fuel as Liquid Fuel as Ideal gas Fuel as Liquid

Fuel as Ideal gas

60 °F 60 °F 60 °F, ideal reaction Compound 1/psia0.5 - - Btu/lbm Btu/gal Btu/lbm Btu/ft3 Btu/gal Btu/lbm Btu/ft3

76 o-xylene 0.1146 0.4395 0.9990 18444. 136062. 18622. 5209.7 137376. 17545. 4958. 77 1,1,3-trimethylcyclopentane 0.0648 0.2486 0.9980 20201. 126790. 20217. 5978.1 126888. 18840. 5576. 78 1,trans-2,cis-4-trimethylcyclopentane 0.0556 0.2130 0.9988 20177. 126470. 20193. 5971.2 126571. 18816. 5569. 79 r-1,t-2,c-3-trimethylcyclopentane 0.0606 0.2323 0.9986 20177. 127560. 20193. 5971.2 127662. 18816. 5569. 80 1,1,2-trimethylcyclopentane 0.0604 0.2317 0.9988 20157. 130507. 20173. 5965.2 130612. 18796. 5563. 81 1,cis-2,trans-4-trimethylcyclopentane 0.0728 0.2792 0.9985 20177. 129182. 20193. 5971.2 129287. 18816. 5569. 82 r-1,c-2,t-3-trimethylcyclopentane 0.0574 0.2199 0.9991 20177. 130301. 20193. 5971.2 130409. 18816. 5569. 83 trans-1,4-dimethylcyclohexane 0.0612 0.2346 0.9990 19954. 127632. 19970. 5905.2 127737. 18593. 5503. 84 1,1-dimethylcyclohexane 0.0747 0.2865 0.9985 19968. 130728. 19984. 5909.3 130837. 18606. 5507. 85 trans-1,3-dimethylcyclohexane 0.0636 0.2437 0.9990 19979. 131244. 19996. 5912.7 131353. 18618. 5510. 86 trans-1-ethyl-3-methylcyclopentane 0.0549 0.2106 0.9993 20054. 128163. 20071. 5935.0 128270. 18693. 5533. 87 cis-1-ethyl-3-methylcyclopentane 0.0620 0.2379 0.9991 20061. 129923. 20077. 5936.8 130031. 18700. 5534. 88 trans-1-ethyl-2-methylcyclopentane 0.0696 0.2667 0.9988 20058. 129386. 20075. 5936.0 129493. 18697. 5534. 89 1-ethyl-1-methylcyclopentane 0.0613 0.2351 0.9991 20063. 131360. 20080. 5937.5 131470. 18702. 5535. 90 1,cis-2,cis-3-trimethylcyclopentane 0.0685 0.2626 0.9989 20177. 131672. 20193. 5971.2 131782. 18815. 5569. 91 cis-1,4-dimethylcyclohexane 0.0494 0.1892 0.9995 19979. 131132. 19996. 5912.8 131243. 18618. 5510. 92 cis-1,3-dimethylcyclohexane 0.0995 0.3813 0.9980 19951. 128258. 19968. 5904.6 128368. 18590. 5502. 93 isopropylcyclopentane 0.0765 0.2934 0.9989 20200. 131486. 20217. 5978.1 131598. 18838. 5576. 94 cis-1-ethyl-2-methylcyclopentane 0.0374 0.1435 0.9998 20073. 132144. 20091. 5940.9 132259. 18712. 5538. 95 cis-1,2-dimethylcyclohexane 0.0496 0.1902 0.9996 19993. 133504. 20011. 5917.1 133620. 18632. 5515. 96 propylcyclopentane 0.0587 0.2251 0.9995 20081. 130690. 20099. 5943.1 130806. 18720. 5541. 97 ethylcyclohexane 0.0427 0.1638 0.9997 20161. 133230. 20178. 5966.7 133346. 18800. 5564. 98 cyclooctane 0.1156 0.4432 0.9992 20158. 141298. 20177. 5966.4 141431. 18797. 5564. 99 2,2,4-trimethylpentane 0.0937 0.3591 0.9947 20421. 118553. 20555. 6187.3 119334. 18916. 5734. 100 2,2-dimethylhexane 0.0700 0.2685 0.9980 20529. 119758. 20545. 6184.2 119853. 19024. 5731. 101 2,5-dimethylhexane 0.0821 0.3146 0.9976 20534. 119550. 20550. 6185.9 119647. 19030. 5733. 102 2,4-dimethylhexane 0.2336 0.8955 0.9805 20547. 120540. 20563. 6189.7 120635. 19043. 5737. 103 2,2,3-trimethylpentane 0.0674 0.2584 0.9983 20547. 123328. 20563. 6189.8 123426. 19043. 5737. 104 3,3-dimethylhexane 0.0475 0.1821 0.9992 20545. 122290. 20561. 6189.1 122388. 19040. 5736. 105 2,3,4-trimethylpentane 0.0629 0.2411 0.9987 20554. 123896. 20571. 6192.0 123995. 19050. 5739. 106 2,3-dimethylhexane 0.0534 0.2045 0.9992 20563. 122896. 20580. 6194.7 122997. 19058. 5742. 107 2-methylheptane 0.0448 0.1717 0.9995 20553. 120286. 20571. 6192.0 120388. 19049. 5739. 108 4-methylheptane 0.0838 0.3213 0.9984 20566. 121542. 20583. 6195.8 121645. 19062. 5743. 109 3,4-dimethylhexane 0.0589 0.2259 0.9991 20566. 123999. 20583. 6195.6 124101. 19061. 5743. 110 3-ethylhexane 0.0501 0.1921 0.9994 20571. 123046. 20588. 6197.2 123150. 19066. 5744. 111 3-methylheptane 0.0438 0.1680 0.9996 20563. 121700. 20581. 6195.0 121803. 19059. 5742. 112 isopropylbenzene 0.0854 0.3274 0.9996 18636. 134660. 18656. 5908.7 134802. 17683. 5607. 113 propylbenzene 0.0872 0.3341 0.9997 18645. 134703. 18666. 5911.8 134848. 17692. 5610.

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Page 23: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 19

Notes p b,d,i b,d,i Summation Factor Compress-

ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=14.696 psia Fuel as Liquid Fuel as Ideal gas Fuel as Liquid

Fuel as Ideal gas

60 °F 60 °F 60 °F, ideal reaction Compound 1/psia0.5 - - Btu/lbm Btu/gal Btu/lbm Btu/ft3 Btu/gal Btu/lbm Btu/ft3

114 m-ethyltoluene 0.0884 0.3388 0.9998 18608. 134813. 18628. 5900.1 134962. 17655. 5598. 115 p-ethyltoluene 0.0877 0.3361 0.9998 18604. 134313. 18625. 5898.9 134463. 17651. 5597. 116 1,3,5-trimethylbenzene 0.0897 0.3439 0.9998 18556. 134520. 18576. 5883.4 134665. 17603. 5582. 117 o-ethyltoluene 0.0886 0.3398 0.9998 18616. 137413. 18637. 5902.7 137567. 17663. 5601. 118 1,2,4-trimethylbenzene 0.0894 0.3426 0.9998 18560. 136221. 18582. 5885.2 136376. 17607. 5583. 119 1,2,3-trimethylbenzene 0.0890 0.3412 0.9999 18572. 139153. 18593. 5888.9 139314. 17619. 5587. 120 1,1,4-trimethylcyclohexane 0.0577 0.2213 0.9995 20068. 129784. 20085. 6681.5 129895. 18707. 6229. 121 1,1,3-trimethylcyclohexane 0.0371 0.1422 0.9998 20106. 131256. 20124. 6694.4 131371. 18745. 6242. 122 r-1,c-3,c-5-trimethylcyclohexane 0.0469 0.1797 0.9998 20084. 129669. 20103. 6687.5 129789. 18723. 6235. 123 r-1,c-3,t-5-trimethylcyclohexane 0.0886 0.3396 0.9992 20085. 131188. 20103. 6687.5 131308. 18723. 6235. 124 trans,trans-1,2,4-trimethylcyclohexane 0.0427 0.1636 0.9998 20085. 130351. 20103. 6687.5 130466. 18724. 6235. 125 cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane 0.0890 0.3413 0.9993 20084. 132499. 20103. 6687.5 132623. 18723. 6235. 126 r-1,t-2,c-3-trimethylcyclohexane 0.0892 0.3420 0.9993 20085. 132510. 20103. 6687.5 132631. 18723. 6235. 127 r-1,t-2,t-4-trimethylcyclohexane 0.0894 0.3426 0.9993 20084. 132292. 20103. 6687.5 132414. 18723. 6235. 128 cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane 0.0900 0.3450 0.9994 20084. 133214. 20103. 6687.5 133338. 18723. 6235. 129 1,1,2-trimethylcyclohexane 0.0694 0.2659 0.9995 20067. 134319. 20085. 6681.5 134439. 18706. 6229. 130 isobutylcyclopentane 0.0892 0.3421 0.9994 20204. 132197. 20223. 6727.3 132320. 18843. 6275. 131 cis,cis-1,2,3-trimethylcyclohexane 0.0909 0.3486 0.9995 20084. 135102. 20103. 6687.5 135229. 18723. 6235. 132 cis-1,2,trans-1,3-cyclohexane 0.0915 0.3508 0.9995 20084. 135185. 20103. 6687.5 135315. 18723. 6235. 133 isopropylcyclohexane 0.0873 0.3348 0.9996 20104. 135148. 20124. 6694.4 135278. 18743. 6242. 134 butylcyclopentane 0.0900 0.3450 0.9997 20224. 132989. 20244. 6734.3 133121. 18862. 6281. 135 propylcyclohexane 0.1283 0.4917 0.9993 19856. 132124. 20012. 6657.1 133159. 18495. 6204. 136 methylcyclooctane 0.0897 0.3439 0.9997 20281. 141668. 20300. 6753.1 141800. 18920. 6300. 137 2,2,4,4-tetramethylpentane 0.0553 0.2121 0.9993 20496. 123665. 20513. 6932.8 123766. 19007. 6430. 138 2,2,5-trimethylhexane 0.0867 0.3322 0.9986 20452. 121304. 20470. 6918.2 121408. 18963. 6415. 139 2,2,4-trimethylhexane 0.0252 0.0966 0.9999 20487. 122934. 20505. 6930.1 123039. 18999. 6427. 140 2,4,4-trimethylhexane 0.0822 0.3152 0.9990 20496. 124385. 20514. 6933.1 124492. 19008. 6430. 141 2,3,5-trimethylhexane 0.0889 0.3409 0.9989 20483. 123994. 20501. 6928.8 124102. 18994. 6426. 142 2,4-dimethylheptane 0.0905 0.3471 0.9990 20632. 123668. 20650. 6979.1 123778. 19143. 6476. 143 2,2-dimethylheptane 0.0907 0.3478 0.9990 20469. 121962. 20487. 6924.0 122072. 18980. 6421. 144 2,2,3-trimethylhexane 0.0471 0.1807 0.9997 20487. 125709. 20505. 6930.2 125819. 18999. 6427. 145 2,6-dimethylheptane 0.0912 0.3498 0.9991 20623. 122805. 20641. 6976.3 122916. 19134. 6473. 146 2,5-dimethylheptane 0.0912 0.3497 0.9991 20631. 123969. 20650. 6979.1 124080. 19143. 6476. 147 3,5-dimethylheptane 0.0915 0.3508 0.9991 20640. 124611. 20659. 6982.1 124723. 19151. 6479. 148 3,3-dimethylheptane 0.0915 0.3507 0.9990 20623. 125543. 20641. 6976.1 125654. 19134. 6473. 149 2,3,3-trimethylhexane 0.0895 0.3432 0.9992 20492. 126237. 20511. 6932.1 126351. 19004. 6429. 150 2,3,4-trimethylhexane 0.0900 0.3451 0.9991 20637. 127732. 20655. 6980.9 127844. 19149. 6478. 151 2,2,3,3-tetramethylpentane 0.0872 0.3343 0.9992 20502. 130019. 20520. 6935.3 130134. 19013. 6432.

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Page 24: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 20

Notes p b,d,i b,d,i Summation Factor Compress-

ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=14.696 psia Fuel as Liquid Fuel as Ideal gas Fuel as Liquid

Fuel as Ideal gas

60 °F 60 °F 60 °F, ideal reaction Compound 1/psia0.5 - - Btu/lbm Btu/gal Btu/lbm Btu/ft3 Btu/gal Btu/lbm Btu/ft3

152 3,4-dimethylheptane 0.0920 0.3526 0.9993 20648. 126637. 20667. 6984.9 126755. 19159. 6482. 153 2,3-dimethylheptane 0.0921 0.3530 0.9993 20639. 125514. 20659. 6982.1 125631. 19151. 6479. 154 4-methyloctane 0.0940 0.3604 0.9995 20649. 125009. 20670. 6986.0 125137. 19161. 6483. 155 2-methyloctane 0.0949 0.3636 0.9994 20642. 123450. 20662. 6983.2 123569. 19153. 6480. 156 3-methyloctane 0.0930 0.3565 0.9994 20651. 124793. 20670. 6986.0 124911. 19162. 6483. 157 naphthalene 0.1752 0.6717 0.9999 17270. 148315. 17294. 5840.9 148518. 16674. 5640. 158 tert-butylbenzene 0.1581 0.6060 0.9994 18764. 136253. 18785. 6643.9 136404. 17768. 6292. 159 isobutylbenzene 0.0926 0.3551 0.9998 18769. 134165. 18790. 6645.9 134316. 17773. 6294. 160 sec-butylbenzene 0.1576 0.6043 0.9995 18780. 135679. 18801. 6649.7 135831. 17784. 6298. 161 1-methyl-3-isopropylbenzene 0.0952 0.3649 0.9998 18901. 136356. 18923. 6692.7 136510. 17906. 6341. 162 1-methyl-4-isopropylbenzene 0.0967 0.3708 0.9999 18901. 135716. 18923. 6692.7 135870. 17906. 6341. 163 1-methyl-2-isopropylbenzene 0.0961 0.3685 0.9999 18901. 138715. 18923. 6692.7 138873. 17906. 6341. 164 1,3-diethylbenzene 0.0986 0.3780 0.9999 18925. 136995. 18947. 6701.3 137156. 17929. 6349. 165 1-methyl-3-propylbenzene 0.1019 0.3905 0.9998 18922. 136559. 18943. 6699.9 136714. 17926. 6348. 166 butylbenzene 0.1627 0.6237 0.9997 18790. 135442. 18812. 6653.5 135601. 17794. 6301. 167 1-methyl-4-propylbenzene 0.1007 0.3860 0.9999 18921. 136104. 18943. 6699.9 136262. 17925. 6348. 168 1,2-diethylbenzene 0.0982 0.3765 0.9999 18925. 139534. 18947. 6701.3 139698. 17929. 6349. 169 1,4-diethylbenzene 0.0989 0.3791 0.9999 18925. 136681. 18947. 6701.3 136843. 17929. 6349. 170 1-methyl-2-propylbenzene 0.1013 0.3885 0.9999 18921. 138551. 18943. 6699.9 138710. 17925. 6348. 171 1,4-dimethyl-2-ethylbenzene 0.0990 0.3797 0.9999 18719. 137609. 18742. 6628.8 137778. 17723. 6277. 172 1,2-dimethyl-4-ethylbenzene 0.0995 0.3813 0.9999 18715. 137071. 18738. 6627.4 137243. 17719. 6275. 173 1,3-dimethyl-2-ethylbenzene 0.0990 0.3796 0.9999 18734. 139764. 18757. 6634.1 139934. 17739. 6282. 174 1,2-dimethyl-3-ethylbenzene 0.0998 0.3827 0.9999 18733. 139989. 18756. 6633.7 140163. 17737. 6282. 175 1,2,4,5-tetramethylbenzene 0.1016 0.3895 0.9999 18601. 138140. 18624. 6587.1 138310. 17606. 6235. 176 1,2,3,5-tetramethylbenzene 0.4590 1.7596 0.9991 18680. 139311. 18703. 6614.9 139482. 17684. 6263. 177 1,2,3,4-tetramethylbenzene 0.4159 1.5942 0.9994 18700. 141742. 18723. 6622.0 141916. 17704. 6270. 178 tert-butylcyclohexane 0.0946 0.3628 0.9998 20067. 136651. 20088. 7424.9 136791. 18706. 6922. 179 butylcyclohexane 0.1013 0.3884 0.9999 19994. 133910. 20016. 7398.3 134055. 18633. 6895. 180 cyclodecane 0.0975 0.3739 0.9999 20168. 145131. 20190. 7462.6 145292. 18806. 6960. 181 isobutylcyclohexane 20120. 134125. 20138. 7443.6 134247. 18759. 6941. 182 2,2-dimethyloctane 0.1010 0.3874 0.9996 20561. 124936. 20581. 7716.6 125059. 19085. 7163. 183 3,6-dimethyloctane 0.1000 0.3832 0.9995 20593. 126999. 20612. 7728.4 127120. 19117. 7175. 184 3,3-dimethyloctane 0.1022 0.3916 0.9996 20576. 127439. 20596. 7722.4 127563. 19100. 7169. 185 2,3-dimethyloctane 0.1028 0.3940 0.9997 20591. 127410. 20612. 7728.4 127542. 19115. 7175. 186 5-methylnonane 0.1039 0.3984 0.9998 20439. 125443. 20461. 7671.4 125576. 18963. 7118. 187 3-ethyloctane 0.1028 0.3941 0.9997 20610. 130953. 20631. 7735.3 131085. 19134. 7182. 188 4-methylnonane 0.1071 0.4108 0.9998 20600. 126434. 20623. 7732.4 126575. 19124. 7179. 189 2-methylnonane 0.1065 0.4083 0.9998 20433. 124450. 20455. 7669.2 124584. 18957. 7116.

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Page 25: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 21

Notes p b,d,i b,d,i Summation Factor Compress-

ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=14.696 psia Fuel as Liquid Fuel as Ideal gas Fuel as Liquid

Fuel as Ideal gas

60 °F 60 °F 60 °F, ideal reaction Compound 1/psia0.5 - - Btu/lbm Btu/gal Btu/lbm Btu/ft3 Btu/gal Btu/lbm Btu/ft3

190 3-methylnonane 0.1047 0.4012 0.9998 20602. 126619. 20623. 7732.4 126751. 19126. 7179. 191 (2-methylbutyl)benzene 0.1042 0.3994 0.9999 19062. 137304. 19086. 7455.8 137471. 18032. 7053. 192 1-tert-butyl-2-methylbenzene 0.1050 0.4025 0.9999 19007. 141649. 19029. 7433.5 141812. 17976. 7031. 193 pentylbenzene 0.1079 0.4138 1.0000 19072. 137304. 19096. 7459.9 137480. 18041. 7057. 194 n-undecane 0.2249 0.8621 0.9998 20453. 126939. 20610. 8489.4 127917. 18987. 7886. 195 1-tert-butyl-3,5-dimethylbenzene 0.1082 0.4149 1.0000 18913. 137112. 18938. 8098.2 137290. 17855. 7645. 196 1,3,5-triethylbenzene 0.1171 0.4489 1.0000 19108. 138041. 19134. 8181.9 138230. 18049. 7729. 197 1,2,4-triethylbenzene 0.1171 0.4488 1.0000 19108. 140617. 19134. 8181.9 140806. 18049. 7729. 198 hexylbenzene 0.1190 0.4562 1.0000 19164. 137933. 19191. 8206.2 138124. 18105. 7753. 199 n-dodecane 0.1978 0.7583 1.0000 20420. 128276. 20578. 9236.6 129268. 18963. 8583. 200 n-tridecane 0.1417 0.5434 1.0000 20520. 130070. 20548. 9982.8 130251. 19070. 9279. 201 n-tetradecane 0.1529 0.5862 1.0000 20493. 131058. 20524. 10729.6 131253. 19050. 9975. 202 n-pentadecane 0.1655 0.6344 1.0000 20470. 131783. 20503. 11476.2 131991. 19032. 10670. 203 n-hexadecane 0.1733 0.6642 1.0000 20277. 131415. 20311. 12119.9 131635. 18844. 11260.

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Page 26: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 22

Notes j b,k b,m n 4 5,o

Volume of Air Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper

Motor Method D-357

Research Method D-908

14.696

psia 60 °F 60 °F 100 °F, 14.696 psia Compound - Btu/lbm Btu/(lbm °F) - - (volume % in air) - -

1 methane 9.552 219.6 0.5266 0.4028 1.3073 1.00042 5.0 15.0 2 ethane 16.715 210.4 0.4079 0.3418 0.9664 1.1932 1.00072 2.9 13.0 +0.05 +1.6 3 propane 23.879 183.0 0.3873 0.3423 0.6183 1.1316 1.00103 2.0 9.5 97.1 +1.8 4 isobutane 31.043 157.0 0.3866 0.3525 0.5641 1.0969 1.00123 1.8 8.5 97.6 +0.1 5 n-butane 31.043 165.8 0.3949 0.3608 0.5692 1.0947 1.00133 1.5 9.0 89.6 93.8 6 isopentane 38.206 147.6 0.3828 0.3553 0.5311 1.0775 1.35639 1.3 8.0 90.3 92.3 7 n-pentane 38.206 153.7 0.3879 0.3603 0.5427 1.0764 1.35981 1.4 8.3 62.6 61.7 8 n-hexane 45.370 144.0 0.3857 0.3626 0.5285 1.0635 1.37673 1.1 7.7 26 24.8 9 n-heptane 52.534 136.2 0.3841 0.3643 0.5268 1.0544 1.38995 1.0 7.0 10 n-octane 59.697 129.9 0.3829 0.3655 0.5240 1.0476 1.39960 0.8 6.5 11 n-nonane 66.861 124.1 0.3820 0.3665 0.5192 1.0423 1.40719 0.7 5.6 12 n-decane 74.025 118.8 0.3813 0.3673 0.5155 1.0380 1.41384 0.7 5.4 13 ethylene 14.327 207.4 0.3573 0.2865 1.2471 2.9 32.0 75.6 +0.03 14 propylene 21.491 188.7 0.3572 0.3101 0.6036 1.1519 1.31616 2.1 11.1 84.9 +0.2 15 carbon dioxide 246.5 0.1992 0.1541 0.6857 1.2929 1.22624 16 hydrogen sulfide 7.164 234.9 0.2383 0.1800 0.5088 1.3236 4.3 45.5 17 nitrogen 85.63 0.2483 0.1774 1.3996 18 oxygen 91.60 0.2189 0.1569 1.3956 19 helium 8.841 1.2404 0.7442 1.6667 20 water 970.12 0.44478 0.33455 1.0003 1.3295 1.33416 21 hydrogen 2.388 192.9 3.4076 2.4225 1.4067 4.0 74.2 22 carbon monoxide 2.388 92.3 0.2484 0.1775 1.3994 12.5 74.2 23 hydrogen chloride 190.7 0.1908 0.1363 0.5262 1.3995 24 carbonyl sulfide 7.164 132.8 0.1632 0.1301 0.3123 1.2540 1.36215 25 chlorine 121.5 0.1138 0.0858 0.2324 1.3264 26 ammonia 3.582 588.8 0.4968 0.3802 1.1190 1.3067 15.5 27 27 sulfur dioxide 167.3 0.1474 0.1164 0.3295 1.2664 28 methanol 7.164 473.4 0.3238 0.2618 0.5921 1.2367 1.33038 5.5 44 29 ethanol 14.327 365.3 0.3306 0.2875 0.5644 1.1499 1.36328 3.28 19 30 ethyne 11.939 0.3969 0.3206 1.2829 1.2379 1.5 100 31 1,2-propadiene 19.103 219.1 0.3445 0.2950 0.6062 1.1680 1.37799 32 1-propyne 19.103 0.3545 0.3049 0.5290 1.1626 1.34723 33 1,3-butadiene 26.267 178.1 0.3417 0.3050 0.5340 1.1204 1.40230 2 12.5 34 1,2-butadiene 26.267 190.4 0.3435 0.3068 0.5393 1.1197 1.62 10.3 35 2-methylpropene 28.655 168.4 0.3693 0.3339 0.5543 1.1060 1.35350 1.6 10

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Page 27: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 23

Notes j b,k b,m n 4 5,o Volume of

Air Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper

Motor Method D-357

Research Method D-908

14.696

psia 60 °F 60 °F 100 °F, 14.696 psia Compound - Btu/lbm Btu/(lbm °F) - - (volume % in air) - -

36 1-butene 28.655 168.6 0.3535 0.3181 0.5386 1.1113 1.35392 1.6 10 80.8 97.4 37 (E)-2-butene 28.655 174.2 0.3641 0.3287 0.5445 1.1077 1.35878 1.6 10 38 (Z)-2-butene 28.655 178.1 0.3353 0.2999 0.5255 1.1180 1.36853 1.6 10 83.5 100 39 2-methyl-1,3-butadiene 33.430 162.7 0.3510 0.3219 0.5189 1.0906 1.42478 1.12 8.5 81 99.1 40 3-methyl-1-butene 35.818 147.4 0.3808 0.3525 0.5215 1.0803 41 1-pentene 35.818 153.7 0.3593 0.3309 0.5190 1.0856 1.36182 1.3 10 77.1 90.9 42 2-methyl-1-butene 35.818 156.3 0.3655 0.3372 0.5267 1.0840 43 (E)-2-pentene 35.818 159.9 0.3622 0.3339 0.5253 1.0848 44 (Z)-2-pentene 35.818 160.3 0.3277 0.2993 0.5076 1.0946 45 2-methyl-2-butene 35.818 161.3 0.3488 0.3205 0.5115 1.0884 1.39012 46 cyclopentane 35.818 167.4 0.2734 0.2451 0.4216 1.1155 1.40889 1.5 8.3 84.9 +0.1 47 2,2-dimethylpropane 38.206 135.7 0.3886 0.3610 0.5374 1.0762 1.3 7.5 80.2 85.5 48 benzene 35.818 169.3 0.2401 0.2147 0.4082 1.1184 1.50381 1.2 8 +2.8 49 methylcyclopentane 42.982 148.5 0.3002 0.2766 0.4410 1.0853 1.41208 1 8.4 80 91.3 50 cyclohexane 42.982 153.2 0.2898 0.2662 0.4335 1.0886 1.42869 1.2 8.4 77.2 83 51 2,2-dimethylbutane 45.370 131.5 0.3812 0.3581 0.5148 1.0643 1.37141 1.2 7 93.4 91.8 52 2,3-dimethylbutane 45.370 135.6 0.3747 0.3516 0.5132 1.0655 1.37732 1.2 7 94.3 +0.3 53 2-methylpentane 45.370 138.9 0.3833 0.3603 0.5232 1.0640 1.37402 1.2 7 73.5 73.4 54 3-methylpentane 45.370 139.9 0.3774 0.3544 0.5189 1.0650 1.37894 1.2 7.7 74.3 74.5 55 toluene 42.982 155.1 0.2602 0.2386 0.3993 1.0903 1.49919 1.2 7.1 +0.3 +5.8 56 1,1-dimethylcyclopentane 50.146 132.6 0.3144 0.2941 0.4452 1.0688 1.41583 1.2 7.4 89.3 92.3 57 trans-1,3-dimethylcyclopentane 50.146 133.4 0.3173 0.2971 0.4456 1.0681 1.41228 1.2 7.4 72.6 80.6 58 cis-1,3-dimethylcyclopentane 50.146 133.1 0.3171 0.2969 0.4490 1.0681 1.41147 1.2 7.4 73.1 79.2 59 trans-1,2-dimethylcyclopentane 50.146 133.9 0.3174 0.2972 0.4504 1.0681 1.41408 1.2 7.4 60 cis-1,2-dimethylcyclopentane 50.146 137.3 0.3165 0.2962 0.4503 1.0683 1.42434 1.1 7.2 61 methylcyclohexane 50.146 136.7 0.3196 0.2994 0.4408 1.0676 1.42528 1.1 6.7 71.1 74.8 62 ethylcyclopentane 50.146 139.3 0.3154 0.2951 0.4432 1.0685 1.42199 1.1 6.7 61.2 67.2 63 cycloheptane 50.146 145.6 0.3100 0.2897 0.4306 1.0698 1 6.8 40.2 38.8 64 2,2-dimethylpentane 52.534 125.1 0.3859 0.3661 0.5166 1.0541 1.38450 1.1 6.8 95.6 92.8 65 2,4-dimethylpentane 52.534 127.2 0.3952 0.3753 0.5241 1.0528 1.38434 1.1 6.7 83.8 83.1 66 2,2,3-trimethylbutane 52.534 123.6 0.3777 0.3578 0.4990 1.0554 1.39170 1 7 +0.1 +1.8 67 3,3-dimethylpentane 52.534 127.0 0.3836 0.3638 0.5022 1.0545 1.39326 1 6.7 86.6 80.8 68 2,3-dimethylpentane 52.534 130.3 0.3713 0.3515 0.5104 1.0564 1.39421 1.1 6.8 88.5 91.1 69 2-methylhexane 52.534 131.5 0.3813 0.3615 0.5216 1.0548 1.38736 1 7 46.4 42.4 70 3-methylhexane 52.534 132.5 0.3789 0.3590 0.5122 1.0552 1.39097 1 6.6 55.8 52 71 3-ethylpentane 52.534 133.0 0.3856 0.3657 0.5141 1.0542 1.39570 1 6.5 69.3 65

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Page 28: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 24

Notes j b,k b,m n 4 5,o Volume of

Air Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper

Motor Method D-357

Research Method D-908

14.696

psia 60 °F 60 °F 100 °F, 14.696 psia Compound - Btu/lbm Btu/(lbm °F) - - (volume % in air) - -

72 styrene 47.758 151.2 0.2670 0.2479 0.4095 1.0769 1.54893 1.1 8 +0.2 +3 73 ethylbenzene 50.146 144.2 0.2780 0.2593 0.4099 1.0721 1.49798 1 6.8 97.9 +0.8 74 p-xylene 50.146 144.6 0.2751 0.2564 0.4028 1.0730 1.49801 1.1 7 +1.2 +3.4 75 m-xylene 50.146 146.2 0.2733 0.2546 0.4017 1.0735 1.49932 1 7 +2.8 +4 76 o-xylene 50.146 147.3 0.2873 0.2686 0.4149 1.0697 1.50737 1 7 100 77 1,1,3-trimethylcyclopentane 57.309 119.8 0.3309 0.3132 0.4477 1.0565 1.41329 1.1 7.1 83.5 87.7 78 1,trans-2,cis-4-trimethylcyclopentane 57.309 122.1 0.3301 0.3125 0.4556 1.0566 1.41269 0.9 6.6 79 r-1,t-2,c-3-trimethylcyclopentane 57.309 121.8 0.3301 0.3125 0.4495 1.0566 0.9 6.6 80 1,1,2-trimethylcyclopentane 57.309 123.3 0.3309 0.3132 0.4494 1.0565 1.42496 1 6.9 81 1,cis-2,trans-4-trimethylcyclopentane 57.309 124.2 0.3301 0.3125 0.4532 1.0566 1.42064 1 6.9 79.5 89.2 82 r-1,c-2,t-3-trimethylcyclopentane 57.309 124.7 0.3301 0.3125 0.4557 1.0566 0.9 6.6 83 trans-1,4-dimethylcyclohexane 57.309 124.6 0.3181 0.3004 0.4383 1.0589 1 6.8 62.2 68.3 84 1,1-dimethylcyclohexane 57.309 124.5 0.3268 0.3091 0.4357 1.0572 1.43121 1 6.8 85.9 87.3 85 trans-1,3-dimethylcyclohexane 57.309 125.7 0.3164 0.2987 0.4434 1.0592 1 6.7 64.2 66.9 86 trans-1-ethyl-3-methylcyclopentane 57.309 125.4 0.3296 0.3119 0.4514 1.0567 0.9 6.5 59.8 57.6 87 cis-1-ethyl-3-methylcyclopentane 57.309 125.5 0.3296 0.3119 0.4510 1.0567 0.9 6.5 59.8 57.6 88 trans-1-ethyl-2-methylcyclopentane 57.309 124.4 0.3296 0.3119 0.4471 1.0567 1.43788 0.9 6.6 89 1-ethyl-1-methylcyclopentane 57.309 127.2 0.3261 0.3085 0.4489 1.0574 1.42924 1 6.8 90 1,cis-2,cis-3-trimethylcyclopentane 57.309 125.5 0.3301 0.3125 0.4543 1.0566 1.42120 0.9 6.6 91 cis-1,4-dimethylcyclohexane 57.309 127.5 0.3173 0.2996 0.4420 1.0591 1 6.7 68.2 67.2 92 cis-1,3-dimethylcyclohexane 57.309 126.4 0.3168 0.2991 0.4363 1.0592 1 6.8 71 71.7 93 isopropylcyclopentane 57.309 129.0 0.3269 0.3092 0.4462 1.0572 1.42788 0.9 6.7 76.2 81.1 94 cis-1-ethyl-2-methylcyclopentane 57.309 130.4 0.3296 0.3119 0.4558 1.0567 1.42922 0.9 6.7 95 cis-1,2-dimethylcyclohexane 57.309 129.3 0.3120 0.2943 0.4382 1.0601 1.43801 0.9 6.6 78.6 80.9 96 propylcyclopentane 57.309 132.5 0.3300 0.3123 0.4509 1.0567 1.42847 0.9 6.6 28.1 31.2 97 ethylcyclohexane 57.309 131.2 0.3384 0.3207 0.4417 1.0552 1.43501 0.9 6.6 40.8 46.5 98 cyclooctane 57.309 138.7 0.3006 0.2829 0.4498 1.0626 1.46006 0.8 6.2 58.2 71 99 2,2,4-trimethylpentane 59.697 115.3 0.3756 0.3582 0.4896 1.0485 1.39361 1 6 100 100 100 2,2-dimethylhexane 59.697 119.5 0.3825 0.3652 0.5126 1.0476 0.9 6.3 77.4 72.5 101 2,5-dimethylhexane 59.697 120.7 0.3763 0.3590 0.5115 1.0484 1.39465 0.9 6.3 55.7 55.5 102 2,4-dimethylhexane 59.697 118.1 0.3903 0.3730 0.5232 1.0466 0.9 6.3 69.9 65.2 103 2,2,3-trimethylpentane 59.697 122.4 0.3759 0.3585 0.4965 1.0485 1.40503 0.9 6.3 99.9 +1.2 104 3,3-dimethylhexane 59.697 122.2 0.3870 0.3696 0.5056 1.0470 0.9 6.2 83.4 75.5 105 2,3,4-trimethylpentane 59.697 121.9 0.3884 0.3711 0.5085 1.0469 1.40624 0.9 6.2 95.9 +0.2 106 2,3-dimethylhexane 59.697 125.2 0.3731 0.3557 0.5075 1.0489 1.40351 0.9 6.2 78.9 71.3 107 2-methylheptane 59.697 127.1 0.3808 0.3634 0.5179 1.0478 1.39734 1 6.1 23 20.6

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 25

Notes j b,k b,m n 4 5,o Volume of

Air Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper

Motor Method D-357

Research Method D-908

14.696

psia 60 °F 60 °F 100 °F, 14.696 psia Compound - Btu/lbm Btu/(lbm °F) - - (volume % in air) - -

108 4-methylheptane 59.697 125.3 0.3799 0.3625 0.5155 1.0480 1.40047 0.9 6.1 39 26.7 109 3,4-dimethylhexane 59.697 125.8 0.3690 0.3516 0.5018 1.0494 1.40642 0.9 6.1 81.7 76.3 110 3-ethylhexane 59.697 127.1 0.3862 0.3688 0.5247 1.0471 1.40397 0.9 6.1 52.4 33.5 111 3-methylheptane 59.697 127.6 0.3777 0.3603 0.5144 1.0483 1.40058 0.9 6.1 35 26.8 112 isopropylbenzene 57.309 131.9 0.3073 0.2908 0.4204 1.0568 1.49340 0.9 6.5 99.3 +2.1 113 propylbenzene 57.309 134.6 0.2940 0.2775 0.4195 1.0595 1.49408 0.8 6 98.7 +1.5 114 m-ethyltoluene 57.309 136.2 0.2856 0.2691 0.4241 1.0614 1.49870 0.9 6.2 100 +1.8 115 p-ethyltoluene 57.309 135.6 0.2861 0.2696 0.4264 1.0613 1.49709 0.9 6.2 97 116 1,3,5-trimethylbenzene 57.309 138.5 0.2853 0.2688 0.4084 1.0615 1.50138 0.9 6.1 +0.6 +6 117 o-ethyltoluene 57.309 137.5 0.2991 0.2826 0.4375 1.0585 1.50563 0.9 6.2 92.1 +0.2 118 1,2,4-trimethylbenzene 57.309 139.1 0.2892 0.2727 0.4198 1.0606 1.50692 0.9 6.4 +0.6 +1.4 119 1,2,3-trimethylbenzene 57.309 142.0 0.2991 0.2826 0.4235 1.0585 1.51559 0.9 6.4 +0.1 +0.5 120 1,1,4-trimethylcyclohexane 64.473 113.2 0.3322 0.3165 0.4402 1.0497 0.8 6.5 121 1,1,3-trimethylcyclohexane 64.473 115.8 0.3322 0.3165 0.4445 1.0497 1.43206 0.9 6.5 82.6 81.3 122 r-1,c-3,c-5-trimethylcyclohexane 64.473 118.8 0.3300 0.3143 0.4553 1.0501 0.9 6.5 56.4 59.1 123 r-1,c-3,t-5-trimethylcyclohexane 64.473 118.2 0.3292 0.3135 0.4507 1.0502 0.9 6.5 70.1 68.5 124 trans,trans-1,2,4-trimethylcyclohexane 64.473 115.4 0.3315 0.3158 0.4435 1.0498 0.8 6.5 125 cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane 64.473 119.6 0.3315 0.3158 0.4570 1.0498 0.8 6.5 126 r-1,t-2,c-3-trimethylcyclohexane 64.473 117.6 0.3315 0.3158 0.4503 1.0498 0.9 6.5 81 83.4 127 r-1,t-2,t-4-trimethylcyclohexane 64.473 119.1 0.3315 0.3158 0.4544 1.0498 0.9 6.5 74.3 72.9 128 cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane 64.473 119.6 0.3315 0.3158 0.4556 1.0498 0.8 6.5 129 1,1,2-trimethylcyclohexane 64.473 116.3 0.3322 0.3165 0.4403 1.0497 0.8 6.5 82.6 81.3 130 isobutylcyclopentane 64.473 120.2 0.3333 0.3176 0.4527 1.0495 1.43091 0.8 5.9 28.2 33.4 131 cis,cis-1,2,3-trimethylcyclohexane 64.473 119.9 0.3315 0.3158 0.4537 1.0498 0.9 6.5 132 cis-1,2,trans-1,3-cyclohexane 64.473 121.4 0.3315 0.3158 0.4569 1.0498 0.9 6.5 82.5 86.2 133 isopropylcyclohexane 64.473 124.3 0.3286 0.3129 0.4493 1.0503 1.44286 0.8 6.2 61.1 62.8 134 butylcyclopentane 64.473 126.5 0.3411 0.3254 0.4552 1.0483 1.43360 0.8 6.1 135 propylcyclohexane 64.473 124.6 0.3390 0.3232 0.4600 1.0487 1.43898 0.8 6.1 14 17.8 136 methylcyclooctane 64.473 123.1 0.3212 0.3054 0.4318 1.0515 0.8 6 137 2,2,4,4-tetramethylpentane 66.861 108.9 0.3890 0.3735 0.4858 1.0415 1.40894 0.9 5 138 2,2,5-trimethylhexane 66.861 112.1 0.3754 0.3599 0.4990 1.0430 1.40181 0.8 6 139 2,2,4-trimethylhexane 66.861 111.5 0.3775 0.3620 0.4939 1.0428 0.8 6 140 2,4,4-trimethylhexane 66.861 111.9 0.3843 0.3688 0.4958 1.0420 1.40925 0.8 6 141 2,3,5-trimethylhexane 66.861 113.2 0.3807 0.3652 0.5030 1.0424 0.8 5.9 142 2,4-dimethylheptane 66.861 114.8 0.3897 0.3742 0.5205 1.0414 0.8 5.7 143 2,2-dimethylheptane 66.861 115.5 0.3829 0.3675 0.5133 1.0421 0.8 5.9 60.5 50.3

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GPA 2145 Page 26

Notes j b,k b,m n 4 5,o Volume of

Air Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper

Motor Method D-357

Research Method D-908

14.696

psia 60 °F 60 °F 100 °F, 14.696 psia Compound - Btu/lbm Btu/(lbm °F) - - (volume % in air) - -

144 2,2,3-trimethylhexane 66.861 114.3 0.3755 0.3600 0.4986 1.0430 0.8 6 145 2,6-dimethylheptane 66.861 116.0 0.3791 0.3637 0.5123 1.0426 1.40363 0.8 5.7 146 2,5-dimethylheptane 66.861 115.4 0.3740 0.3585 0.5044 1.0432 0.8 5.7 147 3,5-dimethylheptane 66.861 116.0 0.3860 0.3705 0.5168 1.0418 0.8 5.7 148 3,3-dimethylheptane 66.861 114.2 0.3863 0.3708 0.5098 1.0418 0.8 5.8 149 2,3,3-trimethylhexane 66.861 116.2 0.3826 0.3671 0.5081 1.0422 0.8 5.8 150 2,3,4-trimethylhexane 66.861 114.6 0.3850 0.3695 0.5036 1.0419 0.8 5.8 151 2,2,3,3-tetramethylpentane 66.861 115.0 0.3824 0.3669 0.4954 1.0422 1.42543 0.8 4.9 95 +3.6 152 3,4-dimethylheptane 66.861 118.7 0.3705 0.3550 0.5051 1.0436 0.8 5.7 153 2,3-dimethylheptane 66.861 119.1 0.3735 0.3580 0.5093 1.0433 0.7 5.5 154 4-methyloctane 66.861 125.2 0.3780 0.3625 0.5415 1.0427 0.8 5.7 155 2-methyloctane 66.861 121.9 0.3795 0.3640 0.5267 1.0425 0.8 5.7 156 3-methyloctane 66.861 119.2 0.3786 0.3631 0.5142 1.0426 0.8 5.8 157 naphthalene 57.309 145.1 0.2372 0.2217 0.3578 1.0699 0.9 5.9 158 tert-butylbenzene 64.473 122.4 0.3085 0.2937 0.4222 1.0504 1.49463 0.8 5.7 +0.8 +3 159 isobutylbenzene 64.473 124.3 0.3078 0.2930 0.4238 1.0505 1.48860 0.8 6 98 +1.6 160 sec-butylbenzene 64.473 123.6 0.3078 0.2930 0.4250 1.0505 1.49203 0.8 6.9 95.7 +0.7 161 1-methyl-3-isopropylbenzene 64.473 125.7 0.3099 0.2951 0.4390 1.0501 0.8 5.6 162 1-methyl-4-isopropylbenzene 64.473 125.4 0.3099 0.2951 0.4157 1.0501 1.49209 0.8 5.6 97.7 +1.4 163 1-methyl-2-isopropylbenzene 64.473 124.7 0.3099 0.2951 0.4367 1.0501 0.8 5.2 96 +0.6 164 1,3-diethylbenzene 64.473 127.9 0.3061 0.2913 0.4426 1.0508 1.49748 0.8 5.9 97 +3 165 1-methyl-3-propylbenzene 64.473 120.3 0.3117 0.2969 0.4367 1.0498 0.8 5.4 +1.8 166 butylbenzene 64.473 128.1 0.3004 0.2857 0.4247 1.0518 1.48873 0.8 5.8 94.5 +0.4 167 1-methyl-4-propylbenzene 64.473 125.0 0.3117 0.2969 0.4429 1.0498 0.8 5.4 168 1,2-diethylbenzene 64.473 128.0 0.3163 0.3015 0.4516 1.0491 1.50538 0.8 5.9 169 1,4-diethylbenzene 64.473 128.1 0.3050 0.2902 0.4427 1.0510 1.49677 0.8 5.8 95.2 +0.6 170 1-methyl-2-propylbenzene 64.473 122.9 0.3117 0.2969 0.4392 1.0498 0.8 5.5 92.2 +0.3 171 1,4-dimethyl-2-ethylbenzene 64.473 129.3 0.3137 0.2989 0.4540 1.0495 0.8 6.1 96 +0.6 172 1,2-dimethyl-4-ethylbenzene 64.473 131.6 0.3137 0.2989 0.4566 1.0495 0.8 6.1 173 1,3-dimethyl-2-ethylbenzene 64.473 130.2 0.3137 0.2989 0.4491 1.0495 0.8 6.1 174 1,2-dimethyl-3-ethylbenzene 64.473 131.6 0.3137 0.2989 0.4517 1.0495 0.8 5.3 91.9 +0.4 175 1,2,4,5-tetramethylbenzene 64.473 134.6 0.3293 0.3145 0.4706 1.0470 0.7 5.5 176 1,2,3,5-tetramethylbenzene 64.473 135.5 0.3231 0.3083 0.4239 1.0480 0.7 5.6 +0.2 177 1,2,3,4-tetramethylbenzene 64.473 136.5 0.3295 0.3147 0.4280 1.0470 0.7 5.5 +0.1 +0.5 178 tert-butylcyclohexane 71.637 115.1 0.3349 0.3208 0.4405 1.0441 1.44879 0.7 5.9 179 butylcyclohexane 71.637 119.0 0.3465 0.3324 0.4523 1.0426 1.44271 0.7 5.7

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017

GPA 2145 Page 27

Notes j b,k b,m n 4 5,o Volume of

Air Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper

Motor Method D-357

Research Method D-908

14.696

psia 60 °F 60 °F 100 °F, 14.696 psia Compound - Btu/lbm Btu/(lbm °F) - - (volume % in air) - -

180 cyclodecane 71.637 124.6 0.3186 0.3045 0.4307 1.0465 0.6 5.4 181 isobutylcyclohexane 71.637 0.3342 0.3201 0.4421 1.0442 1.44057 0.7 5.9 182 2,2-dimethyloctane 74.025 110.0 0.3814 0.3675 0.5118 1.0380 0.7 5.5 183 3,6-dimethyloctane 74.025 108.0 0.3714 0.3574 0.4897 1.0391 0.7 5.4 184 3,3-dimethyloctane 74.025 109.1 0.3843 0.3704 0.5067 1.0377 0.7 5.5 185 2,3-dimethyloctane 74.025 114.0 0.3729 0.3590 0.5078 1.0389 0.7 5.4 186 5-methylnonane 74.025 118.0 0.3774 0.3635 0.5237 1.0384 0.7 5.4 187 3-ethyloctane 74.025 111.6 0.3835 0.3695 0.5103 1.0378 0.7 5.4 188 4-methylnonane 74.025 123.6 0.3785 0.3645 0.5391 1.0383 0.7 5.4 189 2-methylnonane 74.025 119.7 0.3794 0.3654 0.5344 1.0382 0.7 5.4 190 3-methylnonane 74.025 113.8 0.3772 0.3633 0.5128 1.0384 0.7 5.4 191 (2-methylbutyl)benzene 71.637 118.9 0.3151 0.3017 0.4432 1.0444 0.7 5.1 192 1-tert-butyl-2-methylbenzene 71.637 113.5 0.3176 0.3042 0.4256 1.0440 0.7 5.1 193 pentylbenzene 71.637 122.0 0.3074 0.2941 0.4435 1.0456 1.49136 0.7 5.1 194 n-undecane 81.188 114.0 0.3810 0.3683 0.5219 1.0345 1.41921 0.6 5 195 1-tert-butyl-3,5-dimethylbenzene 78.800 113.8 0.3251 0.3129 0.3956 1.0391 0.6 5 196 1,3,5-triethylbenzene 78.800 116.9 0.3215 0.3093 0.4386 1.0396 1.50201 0.6 5 197 1,2,4-triethylbenzene 78.800 114.0 0.3260 0.3138 0.4581 1.0390 0.6 5 198 hexylbenzene 78.800 115.9 0.3133 0.3011 0.4389 1.0406 0.7 5 199 n-dodecane 88.352 110.1 0.3802 0.3686 0.5213 1.0316 1.42360 0.5 4.8 200 n-tridecane 95.516 104.7 0.3799 0.3692 0.5218 1.0292 1.42405 0.4 4.5 201 n-tetradecane 102.679 106.8 0.3793 0.3693 0.5224 1.0271 1.43054 0.5 4.3 202 n-pentadecane 109.843 97.42 0.3794 0.3700 0.5227 1.0253 1.43450 0.4 4.1 203 n-hexadecane 117.007 92.88 0.3794 0.3706 0.5240 1.0237 1.43623

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GPA 2145 Page 28

Notes Compound methane ethane propane isobutane n-butane isopentane n-pentane Formula CH4 C2H6 C3H8 C4H10 C4H10 C5H12 C5H12

a Molar Mass 16.0425 30.0690 44.0956 58.1222 58.1222 72.1488 72.1488 b Boiling Temperature (K, 101.325 kPa) 111.67 184.57 231.04 261.40 272.66 300.98 309.21 c Triple Point Temperature (K) 90.69 90.37 85.53 113.73 134.90 112.65 143.47

b Vapor Pressure 15 °C (kPa) 3375.5 731.51 258.99 176.15 63.57 46.45 40 °C (kPa) 35000. 5500. 1369.4 531.21 378.49 151.51 115.67

Critical Constants Temperature (K) 190.56 305.32 369.89 407.81 425.13 460.35 469.70 Pressure (kPa) 4599. 4872.2 4251.2 3629. 3796. 3378. 3370. Density (kg/m3) 162.66 206.18 220.48 225.50 228.00 236.00 232.00

h Acentric Factor 0.0114 0.0995 0.1521 0.1835 0.2008 0.2274 0.2515

b,d

Density of Liquid (15 °C, 101.325 kPa) Relative density (15 °C/15 °C) 0.3 0.35817 0.50796 0.56346 0.58478 0.62564 0.63119 API gravity 340. 263.56 147.07 119.63 110.47 94.668 92.68 Density (kg/m3) 300. 357.85 507.50 562.95 584.25 625.08 630.62

e Temp. coef. of density (1/K, at 15 °C sat.) -0.01277 -0.00299 -0.00217 -0.00194 -0.00160 -0.00154

f

Density of Ideal Gas (15 °C, 101.325 kPa) Relative density 0.5539 1.0382 1.5225 2.0068 2.0068 2.4911 2.4911 Volume (m3/kg) 1.4739 0.7864 0.5362 0.4068 0.4068 0.3277 0.3277 Density (kg/m3) 0.67848 1.2717 1.8649 2.4581 2.4581 3.0514 3.0514

b,d,g Volume (15 °C, 101.325 kPa) Liquid (cm3/mol) 53.475 84.027 86.888 103.25 99.482 115.42 114.41 Ratio (ideal gas/liquid) 442.17 281.40 272.13 229.02 237.68 204.85 206.67

p Summation Factor (15 °C) Z=1-P*b2 (1/kPa0.5) 0.00442 0.00910 0.0132 0.0168 0.0179 0.0220 0.0232 Z=1-P/P0*b2 (P0=101.325 kPa) 0.04453 0.0916 0.1333 0.1695 0.1807 0.2214 0.2330

Compressibility Factor at 15 °C (sat.) 0.5834 0.8514 0.9198 0.9394 0.9682 0.9744

b,d,i

Gross Heating Value (15 °C, ideal reaction) Fuel as Liquid (MJ/kg) 51.604 49.990 49.038 49.166 48.593 48.668 Fuel as Liquid (MJ/m3) 18467. 25370. 27606. 28725. 30375. 30691. Fuel as Ideal gas (MJ/kg) 55.575 51.951 50.369 49.388 49.546 48.950 49.045 Fuel as Ideal gas (MJ/m3) 37.706 66.066 93.934 121.40 121.79 149.36 149.65

b,d,i Net Heating Value (15 °C, ideal reaction) Fuel as Liquid (MJ/kg) 47.172 45.961 45.216 45.345 44.898 44.974 Fuel as Ideal gas (MJ/m3) 33.95 60.43 86.42 112.0 112.4 138.1 138.4

j Volume of Air Required to Burn One Volume of Ideal Gas 9.552 16.715 23.879 31.043 31.043 38.206 38.206

b,k Heat of Vaporization (101.325 kPa) kJ/kg 510.8 489.4 425.6 365.1 385.7 343.3 357.6

b,m

Specific Heat (15 °C) Cp [kJ/(kg-K)] (ideal gas) 2.2036 1.7054 1.6191 1.6162 1.6511 1.6003 1.6216 Cv [kJ/(kg-K)] (ideal gas) 1.6853 1.4289 1.4305 1.4731 1.5080 1.4851 1.5064 Cσ [kJ/(kg-K)]p (sat. liquid) 4.0050 2.5840 2.3586 2.3805 2.2208 2.2698 k=Cp/Cv 1.3075 1.1935 1.1318 1.0971 1.0949 1.0776 1.0765

n Refractive Index , nD (15 °C) 1.00042 1.00072 1.00103 1.00123 1.00133 1.35669 1.36010

4 Flammability Limits (310.93 K, 101.325 kPa) Lower (volume % in air) 5.0 2.9 2.0 1.8 1.5 1.3 1.4 Upper (volume % in air) 15.0 13.0 9.5 8.5 9.0 8.0 8.3

5,o Octane Number Motor Method D-357 +0.05 97.1 97.6 89.6 90.3 62.6 Research Method D-908 +1.6 +1.8 +0.1 93.8 92.3 61.7

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GPA 2145 Page 29

Compound n-hexane n-heptane n-octane n-nonane n-decane ethylene propylene Formula C6H14 C7H16 C8H18 C9H20 C10H22 C2H4 C3H6 Molar Mass 86.1754 100.2019 114.2285 128.2551 142.2817 28.0532 42.0797 Boiling Temperature (K, 101.325 kPa) 341.86 371.53 398.77 423.91 447.27 169.38 225.53 Triple Point Temperature (K) 177.83 182.55 216.37 219.70 243.50 103.99 87.95 Vapor Pressure 15 °C (kPa) 12.86 3.622 1.030 0.3010 0.08827 892.0 40 °C (kPa) 37.292 12.326 4.1263 1.414 0.4867 1648.5 Critical Constants Temperature (K) 507.50 540.13 568.83 594.6 617.7 282.35 364.21 Pressure (kPa) 3012. 2736. 2487. 2281. 2103. 5042. 4555. Density (kg/m3) 233.18 232.00 234.90 232.14 233.34 214.24 229.63 Acentric Factor 0.2986 0.3494 0.3971 0.4433 0.4884 0.0866 0.1461 Density of Liquid (15 °C, 101.325 kPa) Relative density (15 °C/15 °C) 0.66452 0.68864 0.70693 0.72262 0.73496 0.56815 0.52346 API gravity 81.436 73.977 68.661 64.315 61.027 117.55 138.82 Density (kg/m3) 663.92 688.02 706.30 721.97 734.30 567.64 522.99 Temp. coef. of density (1/K, at 15 °C sat.) -0.00137 -0.00122 -0.00114 -0.00109 -0.00106 -0.00321 Density of Ideal Gas (15 °C, 101.325 kPa) Relative density 2.9754 3.4597 3.9440 4.4283 4.9126 0.9686 1.4529 Volume (m3/kg) 0.2744 0.2360 0.2070 0.1844 0.1662 0.8429 0.5619 Density (kg/m3) 3.6446 4.2378 4.8310 5.4242 6.0174 1.1864 1.7797 Volume (15 °C, 101.325 kPa) Liquid (cm3/mol) 129.8 145.64 161.73 177.65 193.77 49.42 80.46 Ratio (ideal gas/liquid) 182.17 162.35 146.20 133.10 122.03 478.4 293.9 Summation Factor (15 °C) Z=1-P*b2 (1/kPa0.5) 0.0296 0.0364 0.0431 0.0500 0.0595 0.0079 0.0125 Z=1-P/P0*b2 (P0=101.325 kPa) 0.2984 0.3660 0.4343 0.5028 0.5991 0.0798 0.1258 Compressibility Factor at 15 °C (sat.) 0.9886 0.9952 0.9981 0.9992 0.9997 0.8362 Gross Heating Value (15 °C, ideal reaction) Fuel as Liquid (MJ/kg) 48.342 48.103 47.919 47.784 47.671 48.557 Fuel as Liquid (MJ/m3) 32095. 33096. 33845. 34498. 35004. 25395. Fuel as Ideal gas (MJ/kg) 48.715 48.474 48.290 48.152 48.037 50.337 48.941 Fuel as Ideal gas (MJ/m3) 177.55 205.42 233.29 261.19 289.06 59.721 87.097 Net Heating Value (15 °C, ideal reaction) Fuel as Liquid (MJ/kg) 44.735 44.555 44.418 44.320 44.236 45.390 Fuel as Ideal gas (MJ/m3) 164.39 190.39 216.38 242.40 268.39 55.96 81.46 Volume of Air Required to Burn One Volume of Ideal Gas 45.370 52.534 59.697 66.861 74.025 14.327 21.491 Heat of Vaporization (101.325 kPa) kJ/kg 334.9 316.9 302.2 288.6 276.4 482.4 439.0 Specific Heat (15 °C) Cp [kJ/(kg-K)] (ideal gas) 1.6125 1.6057 1.6008 1.5967 1.5938 1.4941 1.4937 Cv [kJ/(kg-K)] (ideal gas) 1.5160 1.5227 1.5280 1.5319 1.5354 1.1977 1.2961 Cσ [kJ/(kg-K)]p (sat. liquid) 2.2104 2.2038 2.1918 2.1719 2.1562 2.5227 k=Cp/Cv 1.0636 1.0545 1.0476 1.0423 1.0381 1.2475 1.1525 Refractive Index , nD (15 °C) 1.37698 1.39024 1.39987 1.40742 1.41409 1.31657 Flammability Limits (310.93 K, 101.325 kPa) Lower (volume % in air) 1.1 1.0 0.8 0.7 0.7 2.9 2.1 Upper (volume % in air) 7.7 7.0 6.5 5.6 5.4 32.0 11.1 Octane Number Motor Method D-357 26 75.6 84.9 Research Method D-908 24.8 +0.03 +0.2

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GPA 2145 Page 30

Compound carbon

dioxide hydrogen

sulfide nitrogen oxygen helium water hydrogen carbon

monoxide Formula CO2 H2S N2 O2 He H2O H2 CO Molar Mass 44.0095 34.0809 28.0134 31.9988 4.0026 18.0153 2.0159 28.0101 Boiling Temperature (K, 101.325 kPa) 194.69 212.85 77.355 90.188 4.2238 373.12 20.37 81.64 Triple Point Temperature (K) 216.59 187.70 63.151 54.361 2.1768 273.16 13.96 68.16 Vapor Pressure 15 °C (kPa) 5087. 1565. 1.7058 40 °C (kPa) 2863. 7.3849 Critical Constants Temperature (K) 304.1 373.1 126.19 154.58 5.1953 647.10 33.150 132.86 Pressure (kPa) 7377. 9000. 3396. 5043. 228.32 22064. 1296.4 3494.0 Density (kg/m3) 467.60 347.28 313.30 436.14 69.58 322.00 31.26 303.91 Acentric Factor 0.2239 0.1005 0.0372 0.0222 -0.3836 0.3443 -0.2187 0.0497 Density of Liquid (15 °C, 101.325 kPa) Relative density (15 °C/15 °C) 0.82195 0.8001 0.80680 1.1422 0.12478 1.00000 0.070912 0.79393 API gravity 40.652 45.353 43.884 -7.62 1002.5 10.000 1863.9 46.727 Density (kg/m3) 821.2 799.4 806.1 1141.2 124.67 999.102 70.848 793.21 Temp. coef. of density (1/K, at 15 °C sat.) -0.01392 -0.00306 -0.00015 Density of Ideal Gas (15 °C, 101.325 kPa) Relative density 1.5195 1.1767 0.9672 1.1048 0.13820 0.62202 0.0696 0.9671 Volume (m3/kg) 0.5373 0.6938 0.8441 0.7389 5.9074 1.3125 11.7293 0.8442 Density (kg/m3) 1.8613 1.4414 1.1848 1.3533 0.16928 0.76191 0.0853 1.1846 Volume (15 °C, 101.325 kPa) Liquid (cm3/mol) 53.59 42.63 34.753 28.040 32.106 18.031 28.45 35.31 Ratio (ideal gas/liquid) 441.2 554.6 680.4 843.3 736.47 1311.3 831.0 669.6 Summation Factor (15 °C) Z=1-P*b2 (1/kPa0.5) 0.00745 0.00913 0.00170 0.00275 0.02495 0.00216 Z=1-P/P0*b2 (P0=101.325 kPa) 0.0750 0.0920 0.01712 0.02764 0.2511 0.0217 Compressibility Factor at 15 °C (sat.) 0.5814 0.8475 0.9989 Gross Heating Value (15 °C, ideal reaction) Fuel as Liquid (MJ/kg) 16.031 Fuel as Liquid (MJ/m3) 12815. Fuel as Ideal gas (MJ/kg) 16.501 2.4662 141.95 10.100 Fuel as Ideal gas (MJ/m3) 23.784 1.8790 12.102 11.965 Net Heating Value (15 °C, ideal reaction) Fuel as Liquid (MJ/kg) 14.727 Fuel as Ideal gas (MJ/m3) 21.905 10.223 11.965 Volume of Air Required to Burn One Volume of Ideal Gas 7.164 2.388 2.388 Heat of Vaporization (101.325 kPa) kJ/kg 573.3 546.4 199.2 213.1 20.564 2256.5 448.7 214.7 Specific Heat (15 °C) Cp [kJ/(kg-K)] (ideal gas) 0.8334 0.9976 1.0395 0.9166 5.1932 1.8620 14.2647 1.0400 Cv [kJ/(kg-K)] (ideal gas) 0.6445 0.7536 0.7427 0.6568 3.1159 1.4005 10.1402 0.7432 Cσ [kJ/(kg-K)]p (sat. liquid) 2.8376 2.1277 4.1888 k=Cp/Cv 1.2931 1.3237 1.3996 1.3956 1.6667 1.3295 1.4067 1.3994 Refractive Index , nD (15 °C) 1.22994 1.33424 Flammability Limits (310.93 K, 101.325 kPa) Lower (volume % in air) 4.3 4 12.5 Upper (volume % in air) 45.5 74.2 74.2 Octane Number Motor Method D-357 Research Method D-908

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GPA 2145 Page 31

Notes a b c b h

Molar Mass

Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

101.325 kPa 15 °C 40 °C Temp. Pressure Density

Compound Formula K kPa K kPa kg/m3 - 1 methane CH4 16.0425 111.67 90.69 35000. 190.56 4599. 162.66 0.0114 2 ethane C2H6 30.0690 184.57 90.37 3375.5 5500. 305.32 4872.2 206.18 0.0995 3 propane C3H8 44.0956 231.04 85.53 731.51 1369.4 369.89 4251.2 220.48 0.1521 4 isobutane C4H10 58.1222 261.40 113.73 258.99 531.21 407.81 3629. 225.50 0.1835 5 n-butane C4H10 58.1222 272.66 134.90 176.15 378.49 425.13 3796. 228.00 0.2008 6 isopentane C5H12 72.1488 300.98 112.65 63.57 151.51 460.35 3378. 236.00 0.2274 7 n-pentane C5H12 72.1488 309.21 143.47 46.45 115.67 469.70 3370. 232.00 0.2515 8 n-hexane C6H14 86.1754 341.86 177.83 12.86 37.292 507.50 3012. 233.18 0.2986 9 n-heptane C7H16 100.2019 371.53 182.55 3.622 12.326 540.13 2736. 232.00 0.3494 10 n-octane C8H18 114.2285 398.77 216.37 1.030 4.1263 568.83 2487. 234.90 0.3971 11 n-nonane C9H20 128.2551 423.91 219.70 0.3010 1.414 594.6 2281. 232.14 0.4433 12 n-decane C10H22 142.2817 447.27 243.50 0.08827 0.4867 617.7 2103. 233.34 0.4884 13 ethylene C2H4 28.0532 169.38 103.99 282.35 5042. 214.24 0.0866 14 propylene C3H6 42.0797 225.53 87.95 892.0 1648.5 364.21 4555. 229.63 0.1461 15 carbon dioxide CO2 44.0095 194.69 216.59 5087. 304.1 7377. 467.60 0.2239 16 hydrogen sulfide H2S 34.0809 212.85 187.70 1565. 2863. 373.1 9000. 347.28 0.1005 17 nitrogen N2 28.0134 77.355 63.151 126.19 3396. 313.30 0.0372 18 oxygen O2 31.9988 90.188 54.361 154.58 5043. 436.14 0.0222 19 helium He 4.0026 4.2238 2.1768 5.1953 228.32 69.58 -0.3836 20 water H2O 18.0153 373.12 273.16 1.7058 7.3849 647.10 22064. 322.00 0.3443 21 hydrogen H2 2.0159 20.37 13.96 33.150 1296.4 31.26 -0.2187 22 carbon monoxide CO 28.0101 81.64 68.16 132.86 3494.0 303.91 0.0497 23 hydrogen chloride HCl 36.4609 188.18 159.01 3786. 6586. 324.55 8288.1 430.24 0.1282 24 carbonyl sulfide COS 60.0751 222.99 134.31 991.3 1826. 378.77 6368.8 445.04 0.0977 25 chlorine Cl2 70.9060 239.18 172.20 586.8 1148. 416.87 7977.8 544.85 0.0875 26 ammonia NH3 17.0305 239.82 195.50 728.5 1555. 405.40 11333.0 225.00 0.2560 27 sulfur dioxide SO2 64.0638 263.13 197.70 277.1 630.6 430.64 7884.0 525.00 0.2557 28 methanol CH4O 32.0419 337.63 175.61 9.899 35.52 513.38 8215.9 281.49 0.5625 29 ethanol C2H6O 46.0684 351.57 159.00 4.328 17.88 514.71 6268.0 273.19 0.6461 30 ethyne C2H2 26.0373 191.66 3840. 308.40 6206.3 221.45 0.1983 31 1,2-propadiene C3H4 40.0639 239.02 136.70 598.9 1170. 393.88 6276.7 243.20 0.1865 32 1-propyne C3H4 40.0639 248.01 170.50 432.1 880.0 402.38 5626.0 244.92 0.2036 33 1,3-butadiene C4H6 54.0904 268.60 164.27 204.5 436.0 425.09 4270.8 242.80 0.1890 34 1,2-butadiene C4H6 54.0904 284.11 136.95 117.3 264.9 456.50 4846.0 247.45 0.1816 35 2-methylpropene C4H8 56.1063 266.15 132.40 222.6 469.2 418.09 4009.8 233.96 0.1926 36 1-butene C4H8 56.1063 266.84 87.80 216.9 457.4 419.29 4005.1 237.89 0.1919

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GPA 2145 Page 32

Notes a b c b h Molar

Mass Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

101.325 kPa 15 °C 40 °C Temp. Pressure Density

Compound Formula K kPa K kPa kg/m3 - 37 (E)-2-butene C4H8 56.1063 274.03 167.60 168.6 366.6 428.61 4027.3 236.38 0.2101 38 (Z)-2-butene C4H8 56.1063 276.87 134.30 152.8 337.6 435.75 4225.5 238.12 0.2024 39 2-methyl-1,3-butadiene C5H8 68.1170 307.20 127.06 49.98 123.8 474.90 3808.1 229.24 0.2298 40 3-methyl-1-butene C5H10 70.1329 293.20 104.74 84.45 195.0 452.69 3510.4 230.00 0.2065 41 1-pentene C5H10 70.1329 303.11 108.02 58.54 141.7 464.74 3546.9 233.00 0.2357 42 2-methyl-1-butene C5H10 70.1329 304.25 135.62 55.80 136.7 467.00 3646.7 238.07 0.2408 43 (E)-2-pentene C5H10 70.1329 309.48 132.95 45.66 114.8 473.80 3633.1 235.68 0.2483 44 (Z)-2-pentene C5H10 70.1329 310.08 121.80 44.62 112.5 474.89 3691.7 232.51 0.2536 45 2-methyl-2-butene C5H10 70.1329 311.59 139.43 42.21 106.8 470.35 3415.2 234.79 0.2815 46 cyclopentane C5H10 70.1329 322.40 179.70 28.11 73.99 511.72 4582.8 274.92 0.2019 47 2,2-dimethylpropane C5H12 72.1488 282.65 256.60 123.0 269.9 433.74 3196.0 235.93 0.1961 48 benzene C6H6 78.1118 353.22 278.67 7.847 24.39 562.02 4907.3 304.71 0.2109 49 methylcyclopentane C6H12 84.1595 344.94 130.73 11.69 33.87 532.78 3779.5 261.64 0.2290 50 cyclohexane C6H12 84.1595 353.86 279.86 8.139 24.64 553.60 4080.5 271.33 0.2096 51 2,2-dimethylbutane C6H14 86.1754 322.87 174.20 28.54 73.42 489.09 3101.8 236.12 0.2323 52 2,3-dimethylbutane C6H14 86.1754 331.12 145.07 20.57 55.37 500.16 3132.8 239.28 0.2464 53 2-methylpentane C6H14 86.1754 333.36 119.60 18.35 50.71 497.70 3040.0 233.97 0.2797 54 3-methylpentane C6H14 86.1754 336.40 110.26 16.40 45.74 504.56 3123.1 233.73 0.2719 55 toluene C7H8 92.1384 383.75 178.00 2.218 7.892 591.75 4126.3 291.99 0.2657 56 1,1-dimethylcyclopentane C7H14 98.1861 360.96 203.72 6.272 19.39 557.00 3818.0 260.98 0.2393 57 trans-1,3-dimethylcyclopentane C7H14 98.1861 363.88 139.29 5.533 17.36 551.00 3347.9 257.69 0.2605 58 cis-1,3-dimethylcyclopentane C7H14 98.1861 364.86 139.48 5.317 16.78 552.00 3356.5 256.14 0.2657 59 trans-1,2-dimethylcyclopentane C7H14 98.1861 365.00 154.70 5.272 16.66 555.00 3472.2 258.41 0.2584 60 cis-1,2-dimethylcyclopentane C7H14 98.1861 372.65 219.48 3.809 12.55 566.00 3513.9 263.15 0.2678 61 methylcyclohexane C7H14 98.1861 374.01 146.59 3.744 12.20 572.20 3500.5 266.99 0.2378 62 ethylcyclopentane C7H14 98.1861 376.61 134.73 3.205 10.76 569.48 3396.9 260.09 0.2707 63 cycloheptane C7H14 98.1861 391.94 265.13 1.699 6.124 604.26 3858.4 277.61 0.2433 64 2,2-dimethylpentane C7H16 100.2019 352.32 149.44 8.840 26.32 520.62 2767.9 241.00 0.2849 65 2,4-dimethylpentane C7H16 100.2019 353.62 153.99 8.225 24.86 519.95 2734.7 240.00 0.3004 66 2,2,3-trimethylbutane C7H16 100.2019 353.99 248.59 8.646 25.43 531.27 2944.7 247.68 0.2478 67 3,3-dimethylpentane C7H16 100.2019 359.19 138.76 6.899 20.93 536.37 2938.8 242.00 0.2664 68 2,3-dimethylpentane C7H16 100.2019 362.95 149.37 5.652 17.75 537.47 2911.1 253.63 0.2949 69 2-methylhexane C7H16 100.2019 363.12 154.92 5.352 17.22 530.37 2734.1 237.87 0.3287 70 3-methylhexane C7H16 100.2019 364.91 153.77 4.993 16.15 535.36 2801.3 245.55 0.3189 71 3-ethylpentane C7H16 100.2019 366.59 154.60 4.697 15.27 540.67 2900.3 241.00 0.3108 72 styrene C8H8 104.1491 418.41 242.50 0.4467 1.939 635.20 3883.4 292.15 0.3026 73 ethylbenzene C8H10 106.1650 409.31 178.20 0.7044 2.875 617.12 3622.4 291.00 0.3050

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GPA 2145 Page 33

Notes a b c b h Molar

Mass Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

101.325 kPa 15 °C 40 °C Temp. Pressure Density

Compound Formula K kPa K kPa kg/m3 - 74 p-xylene C8H10 106.1650 411.47 286.40 0.6474 2.655 616.17 3531.5 286.00 0.3240 75 m-xylene C8H10 106.1650 412.21 225.30 0.6116 2.534 616.89 3534.6 282.93 0.3261 76 o-xylene C8H10 106.1650 417.52 247.99 0.4855 2.061 630.26 3737.5 285.00 0.3118 77 1,1,3-trimethylcyclopentane C8H16 112.2126 378.01 130.61 3.203 10.61 564.00 2966.5 254.29 0.2731 78 1,trans-2,cis-4-trimethylcyclopentane C8H16 112.2126 382.92 142.33 2.509 8.649 565.00 2869.2 252.21 0.3058 79 r-1,t-2,c-3-trimethylcyclopentane C8H16 112.2126 383.21 160.45 2.523 8.642 567.00 2856.1 254.32 0.2920 80 1,1,2-trimethylcyclopentane C8H16 112.2126 386.85 251.46 2.209 7.640 579.00 3059.3 259.95 0.2722 81 1,cis-2,trans-4-trimethylcyclopentane C8H16 112.2126 389.86 141.90 1.909 6.747 577.00 2868.0 255.83 0.2923 82 r-1,c-2,t-3-trimethylcyclopentane C8H16 112.2126 390.82 160.27 1.798 6.429 577.00 2854.1 257.66 0.3005 83 trans-1,4-dimethylcyclohexane C8H16 112.2126 392.47 236.25 1.782 6.287 587.66 3037.0 255.82 0.2679 84 1,1-dimethylcyclohexane C8H16 112.2126 392.65 239.84 1.768 6.256 598.00 3456.9 262.33 0.2527 85 trans-1,3-dimethylcyclohexane C8H16 112.2126 393.21 183.10 1.681 6.003 588.90 3098.0 251.93 0.2742 86 trans-1-ethyl-3-methylcyclopentane C8H16 112.2126 393.75 1.649 5.899 586.00 2957.0 254.96 0.2818 87 cis-1-ethyl-3-methylcyclopentane C8H16 112.2126 394.33 1.615 5.787 587.00 2957.0 258.06 0.2808 88 trans-1-ethyl-2-methylcyclopentane C8H16 112.2126 394.38 164.40 1.674 5.923 589.00 2957.0 257.35 0.2681 89 1-ethyl-1-methylcyclopentane C8H16 112.2126 394.64 129.35 1.530 5.566 595.00 3345.5 261.34 0.2777 90 1,cis-2,cis-3-trimethylcyclopentane C8H16 112.2126 395.52 156.68 1.512 5.482 585.00 2854.2 258.69 0.2931 91 cis-1,4-dimethylcyclohexane C8H16 112.2126 397.43 185.77 1.395 5.090 603.19 3431.7 258.40 0.2605 92 cis-1,3-dimethylcyclohexane C8H16 112.2126 397.57 197.64 1.359 5.007 587.67 2879.1 262.16 0.2990 93 isopropylcyclopentane C8H16 112.2126 399.53 161.69 1.244 4.622 605.00 3435.8 259.31 0.2695 94 cis-1-ethyl-2-methylcyclopentane C8H16 112.2126 401.17 167.21 1.113 4.231 599.00 3184.0 260.77 0.2962 95 cis-1,2-dimethylcyclohexane C8H16 112.2126 402.85 223.32 1.114 4.169 605.60 3205.5 264.24 0.2722 96 propylcyclopentane C8H16 112.2126 404.06 155.81 0.9279 3.644 598.00 3084.0 256.96 0.3201 97 ethylcyclohexane C8H16 112.2126 404.90 161.87 0.9743 3.737 606.90 3285.8 257.35 0.2939 98 cyclooctane C8H16 112.2126 424.29 287.97 0.4004 1.729 647.36 3549.6 273.70 0.2498 99 2,2,4-trimethylpentane C8H18 114.2285 372.36 165.77 3.997 12.97 544.00 2572.0 242.16 0.3035 100 2,2-dimethylhexane C8H18 114.2285 379.96 151.96 2.688 9.323 549.88 2527.3 237.75 0.3370 101 2,5-dimethylhexane C8H18 114.2285 382.23 182.01 2.378 8.424 550.01 2487.7 235.55 0.3562 102 2,4-dimethylhexane C8H18 114.2285 382.53 2.383 8.396 553.00 2557.6 234.67 0.3468 103 2,2,3-trimethylpentane C8H18 114.2285 382.96 160.70 2.546 8.715 563.46 2726.0 260.01 0.2967 104 3,3-dimethylhexane C8H18 114.2285 385.10 146.99 2.245 7.875 561.98 2655.4 257.67 0.3210 105 2,3,4-trimethylpentane C8H18 114.2285 386.60 163.81 2.120 7.467 566.37 2706.2 247.31 0.3117 106 2,3-dimethylhexane C8H18 114.2285 388.73 1.809 6.602 563.45 2628.3 244.00 0.3464 107 2-methylheptane C8H18 114.2285 390.78 164.21 1.568 5.890 559.63 2502.1 234.00 0.3809 108 4-methylheptane C8H18 114.2285 390.83 152.15 1.567 5.883 561.70 2541.2 238.67 0.3708 109 3,4-dimethylhexane C8H18 114.2285 390.85 1.667 6.122 568.81 2691.8 245.00 0.3383 110 3-ethylhexane C8H18 114.2285 391.66 1.535 5.755 565.45 2605.1 249.97 0.3604

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 34

Notes a b c b h Molar

Mass Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

101.325 kPa 15 °C 40 °C Temp. Pressure Density

Compound Formula K kPa K kPa kg/m3 - 111 3-methylheptane C8H18 114.2285 392.04 152.67 1.488 5.619 563.68 2542.6 244.58 0.3690 112 isopropylbenzene C9H12 120.1916 425.50 177.14 0.3327 1.484 631.16 3186.7 284.82 0.3219 113 propylbenzene C9H12 120.1916 432.35 173.63 0.2406 1.118 638.29 3201.2 272.70 0.3449 114 m-ethyltoluene C9H12 120.1916 434.45 177.46 0.2049 0.9788 638.40 3143.9 272.12 0.3575 115 p-ethyltoluene C9H12 120.1916 435.13 210.31 0.1976 0.9568 640.20 3234.1 269.70 0.3654 116 1,3,5-trimethylbenzene C9H12 120.1916 437.91 228.46 0.1868 0.8632 637.31 3127.8 276.38 0.3993 117 o-ethyltoluene C9H12 120.1916 438.29 192.43 0.1729 0.8406 645.80 3207.4 271.93 0.3537 118 1,2,4-trimethylbenzene C9H12 120.1916 442.52 229.36 0.1359 0.6849 649.12 3261.5 274.77 0.3817 119 1,2,3-trimethylbenzene C9H12 120.1916 449.23 247.83 0.1006 0.5208 664.72 3450.0 284.37 0.3649 120 1,1,4-trimethylcyclohexane C9H18 126.2392 407.68 0.9989 3.720 602.00 2685.4 255.34 0.2765 121 1,1,3-trimethylcyclohexane C9H18 126.2392 409.76 204.60 0.8435 3.252 605.00 2800.8 257.20 0.2930 122 r-1,c-3,c-5-trimethylcyclohexane C9H18 126.2392 411.72 229.10 0.7014 2.862 597.00 2638.4 252.93 0.3469 123 r-1,c-3,t-5-trimethylcyclohexane C9H18 126.2392 413.75 186.00 0.6449 2.614 602.16 2648.9 255.06 0.3316 124 trans,trans-1,2,4-trimethylcyclohexane C9H18 126.2392 414.71 0.7267 2.818 610.00 2648.8 254.54 0.2868 125 cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane C9H18 126.2392 415.13 0.5744 2.384 602.00 2648.8 257.33 0.3474 126 r-1,t-2,c-3-trimethylcyclohexane C9H18 126.2392 416.41 206.34 0.6070 2.454 608.00 2651.5 257.63 0.3181 127 r-1,t-2,t-4-trimethylcyclohexane C9H18 126.2392 416.69 0.5611 2.316 606.00 2651.5 245.20 0.3351 128 cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane C9H18 126.2392 418.56 0.5246 2.177 608.00 2645.2 258.11 0.3394 129 1,1,2-trimethylcyclohexane C9H18 126.2392 418.74 243.97 0.6319 2.472 621.00 2771.7 261.79 0.2715 130 isobutylcyclopentane C9H18 126.2392 421.25 157.92 0.4754 1.984 617.00 2752.7 255.10 0.3195 131 cis,cis-1,2,3-trimethylcyclohexane C9H18 126.2392 422.85 0.4417 1.865 616.00 2658.2 260.90 0.3291 132 cis-1,2,trans-1,3-cyclohexane C9H18 126.2392 424.30 187.46 0.3918 1.690 616.00 2648.8 260.53 0.3423 133 isopropylcyclohexane C9H18 126.2392 427.56 183.23 0.3399 1.476 632.20 3059.8 261.06 0.3214 134 butylcyclopentane C9H18 126.2392 429.33 165.20 0.2714 1.249 625.00 2888.7 254.43 0.3657 135 propylcyclohexane C9H18 126.2392 429.86 178.20 0.2960 1.327 630.80 2860.0 260.05 0.3262 136 methylcyclooctane C9H18 126.2392 435.76 288.10 0.2866 1.226 651.00 3006.4 254.02 0.2725 137 2,2,4,4-tetramethylpentane C9H20 128.2551 395.39 206.62 1.549 5.588 574.61 2485.1 241.27 0.3119 138 2,2,5-trimethylhexane C9H20 128.2551 397.16 167.29 1.255 4.783 569.88 2457.3 233.37 0.3641 139 2,2,4-trimethylhexane C9H20 128.2551 399.82 150.70 1.209 4.543 580.00 2540.4 237.99 0.3287 140 2,4,4-trimethylhexane C9H20 128.2551 403.77 159.79 1.022 3.904 598.00 2958.1 242.10 0.3013 141 2,3,5-trimethylhexane C9H20 128.2551 404.00 145.26 0.9622 3.750 580.20 2428.4 239.57 0.3550 142 2,4-dimethylheptane C9H20 128.2551 405.63 0.8286 3.348 576.90 2359.1 236.58 0.3882 143 2,2-dimethylheptane C9H20 128.2551 405.76 160.10 0.8129 3.293 576.65 2349.5 235.21 0.3901 144 2,2,3-trimethylhexane C9H20 128.2551 406.90 0.8501 3.359 585.00 2440.3 234.79 0.3520 145 2,6-dimethylheptane C9H20 128.2551 407.80 170.03 0.7316 3.012 578.70 2357.8 234.23 0.3987 146 2,5-dimethylheptane C9H20 128.2551 408.02 0.7518 3.064 580.70 2358.9 234.40 0.3848 147 3,5-dimethylheptane C9H20 128.2551 408.63 0.7228 2.962 581.20 2352.1 237.50 0.3866

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Page 39: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 35

Notes a b c b h Molar

Mass Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

101.325 kPa 15 °C 40 °C Temp. Pressure Density

Compound Formula K kPa K kPa kg/m3 - 148 3,3-dimethylheptane C9H20 128.2551 409.85 0.7644 3.046 587.50 2366.3 239.48 0.3525 149 2,3,3-trimethylhexane C9H20 128.2551 410.23 156.37 0.6969 2.845 590.00 2516.0 242.30 0.3633 150 2,3,4-trimethylhexane C9H20 128.2551 411.70 0.7353 2.916 596.10 2498.1 243.55 0.3302 151 2,2,3,3-tetramethylpentane C9H20 128.2551 413.39 263.40 0.7013 2.792 607.51 2742.3 249.73 0.3044 152 3,4-dimethylheptane C9H20 128.2551 413.46 0.5478 2.344 588.00 2419.6 239.98 0.3998 153 2,3-dimethylheptane C9H20 128.2551 413.77 0.5314 2.289 587.90 2421.3 238.06 0.4045 154 4-methyloctane C9H20 128.2551 415.21 157.20 0.3383 1.659 574.80 2366.0 241.59 0.5319 155 2-methyloctane C9H20 128.2551 416.12 192.84 0.4134 1.885 582.83 2302.5 234.21 0.4550 156 3-methyloctane C9H20 128.2551 417.00 165.18 0.4673 2.039 592.70 2420.7 237.75 0.4027 157 naphthalene C10H8 128.1705 491.14 353.37 0.01590 0.09896 748.33 4038.9 314.39 0.3024 158 tert-butylbenzene C10H14 134.2182 442.26 215.31 0.1524 0.7452 648.08 2998.4 280.40 0.3513 159 isobutylbenzene C10H14 134.2182 445.87 221.55 0.1328 0.6625 650.28 3045.9 272.25 0.3794 160 sec-butylbenzene C10H14 134.2182 446.45 197.68 0.1271 0.6328 652.50 2940.4 274.00 0.3549 161 1-methyl-3-isopropylbenzene C10H14 134.2182 448.19 209.38 0.1105 0.5626 652.00 2874.0 273.97 0.3656 162 1-methyl-4-isopropylbenzene C10H14 134.2182 450.27 205.10 0.1001 0.5123 653.80 2799.2 272.25 0.3635 163 1-methyl-2-isopropylbenzene C10H14 134.2182 451.26 201.62 0.1003 0.5145 657.00 2865.4 277.96 0.3615 164 1,3-diethylbenzene C10H14 134.2182 454.27 189.22 0.07522 0.4067 654.40 2760.3 273.00 0.3945 165 1-methyl-3-propylbenzene C10H14 134.2182 454.77 190.61 0.1001 0.5037 655.40 2523.5 272.26 0.3552 166 butylbenzene C10H14 134.2182 456.43 185.34 0.07118 0.3849 660.48 2887.1 269.70 0.3927 167 1-methyl-4-propylbenzene C10H14 134.2182 456.49 209.47 0.07419 0.3937 657.40 2648.8 271.07 0.3788 168 1,2-diethylbenzene C10H14 134.2182 456.57 241.74 0.06747 0.3701 659.40 2835.1 277.52 0.3940 169 1,4-diethylbenzene C10H14 134.2182 456.89 229.88 0.06692 0.3690 657.90 2798.1 271.93 0.4026 170 1-methyl-2-propylbenzene C10H14 134.2182 457.73 212.84 0.08242 0.4277 660.80 2618.0 275.61 0.3627 171 1,4-dimethyl-2-ethylbenzene C10H14 134.2182 459.40 219.45 0.05646 0.3218 661.00 2843.8 275.91 0.4132 172 1,2-dimethyl-4-ethylbenzene C10H14 134.2182 462.47 206.27 0.04378 0.2576 665.00 2880.4 274.54 0.4215 173 1,3-dimethyl-2-ethylbenzene C10H14 134.2182 463.21 256.82 0.04890 0.2771 671.00 2908.8 279.83 0.3905 174 1,2-dimethyl-3-ethylbenzene C10H14 134.2182 467.01 223.65 0.03908 0.2290 676.00 2929.2 279.61 0.3970 175 1,2,4,5-tetramethylbenzene C10H14 134.2182 470.26 352.35 0.03278 0.1925 675.68 2883.2 274.65 0.4257 176 1,2,3,5-tetramethylbenzene C10H14 134.2182 471.32 249.33 0.02677 0.1641 679.20 2962.1 278.04 0.4226 177 1,2,3,4-tetramethylbenzene C10H14 134.2182 478.00 266.41 0.02227 0.1367 691.00 3106.2 279.20 0.4284 178 tert-butylcyclohexane C10H20 140.2658 444.72 231.98 0.1596 0.7643 652.00 2824.7 261.30 0.3258 179 butylcyclohexane C10H20 140.2658 454.10 198.47 0.08729 0.4556 653.10 2556.1 256.69 0.3698 180 cyclodecane C10H20 140.2658 475.46 283.50 0.03992 0.2196 709.00 3225.9 271.12 0.3063 181 isobutylcyclohexane C10H20 140.2658 603.00 2366.6 259.52 182 2,2-dimethyloctane C10H22 142.2817 427.49 0.2784 1.299 596.80 2133.1 234.84 0.4361 183 3,6-dimethyloctane C10H22 142.2817 429.00 0.3141 1.398 607.00 2196.5 238.90 0.3814 184 3,3-dimethyloctane C10H22 142.2817 433.58 0.2529 1.156 611.00 2155.9 238.66 0.3928

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Page 40: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 36

Notes a b c b h Molar

Mass Boiling Temp.

Triple Point Temp.

Vapor Pressure Critical Constants Acentric Factor

101.325 kPa 15 °C 40 °C Temp. Pressure Density

Compound Formula K kPa K kPa kg/m3 - 185 2,3-dimethyloctane C10H22 142.2817 437.39 0.1623 0.8156 611.10 2210.5 237.05 0.4488 186 5-methylnonane C10H22 142.2817 437.47 186.74 0.1296 0.6947 603.90 2175.1 236.30 0.5074 187 3-ethyloctane C10H22 142.2817 438.41 0.1826 0.8810 617.10 2207.9 244.20 0.4096 188 4-methylnonane C10H22 142.2817 438.94 174.73 0.1039 0.5926 596.00 2061.6 236.72 0.5790 189 2-methylnonane C10H22 142.2817 440.04 198.84 0.09950 0.5620 601.60 2099.2 233.03 0.5470 190 3-methylnonane C10H22 142.2817 440.76 188.49 0.1330 0.6847 614.20 2166.7 236.80 0.4536 191 (2-methylbutyl)benzene C11H16 148.2447 468.99 0.04178 0.2443 671.00 2671.0 269.47 0.4136 192 1-tert-butyl-2-methylbenzene C11H16 148.2447 473.59 222.87 0.04928 0.2618 691.00 2638.7 279.34 0.3190 193 pentylbenzene C11H16 148.2447 476.04 194.94 0.02208 0.1406 675.00 2578.2 266.16 0.4428 194 undecane C11H24 156.3083 468.93 247.54 0.02601 0.1696 638.80 1990.4 236.79 0.5390 195 1-tert-butyl-3,5-dimethylbenzene C12H18 162.2713 480.47 254.90 0.01656 0.1088 682.00 2644.1 269.26 0.4487 196 1,3,5-triethylbenzene C12H18 162.2713 488.92 206.76 0.00903 0.06610 679.00 2321.9 260.00 0.5058 197 1,2,4-triethylbenzene C12H18 162.2713 490.57 0.00984 0.06971 685.00 2331.0 269.72 0.4772 198 hexylbenzene C12H18 162.2713 498.89 209.70 0.00632 0.04720 695.00 2372.5 260.39 0.4967 199 dodecane C12H26 170.3348 489.44 263.60 0.00750 0.05795 658.10 1817.0 226.55 0.5742 200 tridecane C13H28 184.3614 508.61 267.80 0.00231 0.02080 675.89 1672.0 228.14 0.6081 201 tetradecane C14H30 198.3880 526.70 279.02 0.00070 0.00739 692.49 1566.0 228.12 0.6458 202 pentadecane C15H32 212.4146 543.78 283.10 0.00023 0.00281 706.88 1443.8 226.70 0.6837 203 hexadecane C16H34 226.4412 560.12 291.33 0.00006 0.00090 722.25 1433.9 225.60 0.7323

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Page 41: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 37

Notes b,d e f b,d,g

Density of Liquid Density of Ideal Gas Volume Relative density (15 °C/15

°C) API

gravity Absolute

Temp. coef. of density Relative

density Volume Density Liquid

Ratio, ideal

gas/liquid 15 °C, 101.325 kPa 15 °C, sat 15 °C, 101.325 kPa 15 °C, 101.325 kPa

Compound - - kg/m3 1/K - m3/kg kg/m3 cm3/mol - 1 methane 0.3 340. 300. 0.5539 1.4739 0.67848 53.475 442.17 2 ethane 0.35817 263.56 357.85 -0.01277 1.0382 0.7864 1.2717 84.027 281.40 3 propane 0.50796 147.07 507.50 -0.00299 1.5225 0.5362 1.8649 86.888 272.13 4 isobutane 0.56346 119.63 562.95 -0.00217 2.0068 0.4068 2.4581 103.25 229.02 5 n-butane 0.58478 110.47 584.25 -0.00194 2.0068 0.4068 2.4581 99.482 237.68 6 isopentane 0.62564 94.668 625.08 -0.00160 2.4911 0.3277 3.0514 115.42 204.85 7 n-pentane 0.63119 92.68 630.62 -0.00154 2.4911 0.3277 3.0514 114.41 206.67 8 n-hexane 0.66452 81.436 663.92 -0.00137 2.9754 0.2744 3.6446 129.8 182.17 9 n-heptane 0.68864 73.977 688.02 -0.00122 3.4597 0.2360 4.2378 145.64 162.35 10 n-octane 0.70693 68.661 706.30 -0.00114 3.9440 0.2070 4.8310 161.73 146.20 11 n-nonane 0.72262 64.315 721.97 -0.00109 4.4283 0.1844 5.4242 177.65 133.10 12 n-decane 0.73496 61.027 734.30 -0.00106 4.9126 0.1662 6.0174 193.77 122.03 13 ethylene 0.56815 117.55 567.64 0.9686 0.8429 1.1864 49.42 478.4 14 propylene 0.52346 138.82 522.99 -0.00321 1.4529 0.5619 1.7797 80.46 293.9 15 carbon dioxide 0.82195 40.652 821.2 -0.01392 1.5195 0.5373 1.8613 53.59 441.2 16 hydrogen sulfide 0.8001 45.353 799.4 -0.00306 1.1767 0.6938 1.4414 42.63 554.6 17 nitrogen 0.80680 43.884 806.1 0.9672 0.8441 1.1848 34.753 680.4 18 oxygen 1.1422 -7.62 1141.2 1.1048 0.7389 1.3533 28.040 843.3 19 helium 0.12478 1002.5 124.67 0.13820 5.9074 0.16928 32.106 736.47 20 water 1.00000 10.000 999.102 -0.00015 0.62202 1.3125 0.76191 18.031 1311.3 21 hydrogen 0.070912 1863.9 70.848 0.0696 11.7293 0.0853 28.45 831.0 22 carbon monoxide 0.79393 46.727 793.21 0.9671 0.8442 1.1846 35.31 669.6 23 hydrogen chloride 0.86177 32.697 861.00 -0.00661 1.2589 0.6485 1.5420 42.35 558.4 24 carbonyl sulfide 1.0195 7.2935 1018.6 2.0742 0.3936 2.5407 58.98 400.9 25 chlorine 1.3379 -25.737 1336.7 2.4482 0.3335 2.9988 53.05 445.7 26 ammonia 0.61805 97.446 617.50 -0.00237 0.5880 1.3884 0.7203 27.58 857.3 27 sulfur dioxide 1.3966 -30.183 1395.3 -0.00196 2.2120 0.3691 2.7094 45.91 515.0 28 methanol 0.79640 46.175 795.68 -0.00118 1.1063 0.7379 1.3551 40.27 587.2 29 ethanol 0.79440 46.622 793.69 -0.00107 1.5906 0.5133 1.9484 58.04 407.4 30 ethyne 0.42521 201.28 424.82 0.8990 0.9081 1.1012 61.29 385.8 31 1,2-propadiene 0.59604 105.90 595.50 1.3833 0.5902 1.6944 67.28 351.5 32 1-propyne 0.62818 93.754 627.61 -0.00260 1.3833 0.5902 1.6944 63.84 370.4 33 1,3-butadiene 0.62732 94.063 626.76 1.8676 0.4371 2.2876 86.30 274.0 34 1,2-butadiene 0.65998 82.900 659.39 1.8676 0.4371 2.2876 82.03 288.2 35 2-methylpropene 0.60126 103.84 600.72 -0.00203 1.9372 0.4214 2.3729 93.40 253.2

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 38

Notes b,d e f b,d,g Density of Liquid Density of Ideal Gas Volume

Relative density (15 °C/15

°C) API

gravity Absolute

Temp. coef. of density Relative

density Volume Density Liquid

Ratio, ideal

gas/liquid 15 °C, 101.325 kPa 15 °C, sat 15 °C, 101.325 kPa 15 °C, 101.325 kPa

Compound - - kg/m3 1/K - m3/kg kg/m3 cm3/mol - 36 1-butene 0.60106 103.92 600.52 -0.00204 1.9372 0.4214 2.3729 93.43 253.1 37 (E)-2-butene 0.61089 100.13 610.35 -0.00192 1.9372 0.4214 2.3729 91.93 257.2 38 (Z)-2-butene 0.62775 93.908 627.18 -0.00186 1.9372 0.4214 2.3729 89.46 264.3 39 2-methyl-1,3-butadiene 0.68554 74.907 684.93 2.3519 0.3471 2.8808 99.45 237.8 40 3-methyl-1-butene 0.63471 91.436 634.14 2.4215 0.3371 2.9661 110.6 213.8 41 1-pentene 0.64685 87.252 646.27 2.4215 0.3371 2.9661 108.5 217.9 42 2-methyl-1-butene 0.65632 84.096 655.73 2.4215 0.3371 2.9661 107.0 221.1 43 (E)-2-pentene 0.65363 84.983 653.05 2.4215 0.3371 2.9661 107.4 220.2 44 (Z)-2-pentene 0.65991 82.923 659.32 2.4215 0.3371 2.9661 106.4 222.3 45 2-methyl-2-butene 0.66480 81.346 664.21 2.4215 0.3371 2.9661 105.6 223.9 46 cyclopentane 0.75095 56.928 750.28 -0.00130 2.4215 0.3371 2.9661 93.48 253.0 47 2,2-dimethylpropane 0.59585 105.98 595.31 -0.00182 2.4911 0.3277 3.0514 121.2 195.1 48 benzene 0.88495 28.396 884.16 -0.00118 2.6970 0.3027 3.3035 88.35 267.6 49 methylcyclopentane 0.75413 56.133 753.45 -0.00124 2.9058 0.2810 3.5593 111.7 211.7 50 cyclohexane 0.78407 48.969 783.37 -0.00120 2.9058 0.2810 3.5593 107.4 220.1 51 2,2-dimethylbutane 0.65450 84.696 653.91 -0.00139 2.9754 0.2744 3.6446 131.8 179.4 52 2,3-dimethylbutane 0.66642 80.829 665.82 -0.00131 2.9754 0.2744 3.6446 129.4 182.7 53 2-methylpentane 0.65831 83.444 657.72 -0.00138 2.9754 0.2744 3.6446 131.0 180.5 54 3-methylpentane 0.66959 79.823 668.99 -0.00135 2.9754 0.2744 3.6446 128.8 183.6 55 toluene 0.87232 30.711 871.53 -0.00107 3.1813 0.2566 3.8968 105.7 223.7 56 1,1-dimethylcyclopentane 0.75965 54.770 758.97 -0.00115 3.3901 0.2408 4.1525 129.4 182.8 57 trans-1,3-dimethylcyclopentane 0.75393 56.183 753.25 -0.00115 3.3901 0.2408 4.1525 130.3 181.4 58 cis-1,3-dimethylcyclopentane 0.74995 57.179 749.28 -0.00126 3.3901 0.2408 4.1525 131.0 180.4 59 trans-1,2-dimethylcyclopentane 0.75650 55.546 755.83 -0.00117 3.3901 0.2408 4.1525 129.9 182.0 60 cis-1,2-dimethylcyclopentane 0.77772 50.442 777.02 -0.00115 3.3901 0.2408 4.1525 126.4 187.1 61 methylcyclohexane 0.77444 51.213 773.75 -0.00112 3.3901 0.2408 4.1525 126.9 186.3 62 ethylcyclopentane 0.77143 51.926 770.74 -0.00112 3.3901 0.2408 4.1525 127.4 185.6 63 cycloheptane 0.81628 41.847 815.54 -0.00097 3.3901 0.2408 4.1525 120.4 196.4 64 2,2-dimethylpentane 0.67877 76.965 678.16 -0.00126 3.4597 0.2360 4.2378 147.8 160.0 65 2,4-dimethylpentane 0.67768 77.301 677.07 -0.00130 3.4597 0.2360 4.2378 148.0 159.8 66 2,2,3-trimethylbutane 0.69495 72.112 694.32 -0.00122 3.4597 0.2360 4.2378 144.3 163.8 67 3,3-dimethylpentane 0.69874 71.007 698.11 -0.00104 3.4597 0.2360 4.2378 143.5 164.7 68 2,3-dimethylpentane 0.69982 70.695 699.19 -0.00119 3.4597 0.2360 4.2378 143.3 165.0 69 2-methylhexane 0.68370 75.462 683.09 -0.00126 3.4597 0.2360 4.2378 146.7 161.2 70 3-methylhexane 0.69187 73.018 691.25 -0.00124 3.4597 0.2360 4.2378 145.0 163.1

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Page 43: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 39

Notes b,d e f b,d,g Density of Liquid Density of Ideal Gas Volume

Relative density (15 °C/15

°C) API

gravity Absolute

Temp. coef. of density Relative

density Volume Density Liquid

Ratio, ideal

gas/liquid 15 °C, 101.325 kPa 15 °C, sat 15 °C, 101.325 kPa 15 °C, 101.325 kPa

Compound - - kg/m3 1/K - m3/kg kg/m3 cm3/mol - 71 3-ethylpentane 0.70353 69.629 702.90 -0.00124 3.4597 0.2360 4.2378 142.6 165.9 72 styrene 0.91176 23.694 910.94 3.5960 0.2270 4.4047 114.3 206.8 73 ethylbenzene 0.87203 30.765 871.25 -0.00100 3.6656 0.2227 4.4900 121.9 194.0 74 p-xylene 0.86617 31.863 865.40 -0.00100 3.6656 0.2227 4.4900 122.7 192.7 75 m-xylene 0.86926 31.282 868.48 -0.00098 3.6656 0.2227 4.4900 122.2 193.4 76 o-xylene 0.88523 28.345 884.43 -0.00095 3.6656 0.2227 4.4900 120.0 197.0 77 1,1,3-trimethylcyclopentane 0.75323 56.358 752.55 -0.00115 3.8744 0.2107 4.7458 149.1 158.6 78 1,trans-2,cis-4-trimethylcyclopentane 0.75221 56.612 751.54 -0.00113 3.8744 0.2107 4.7458 149.3 158.4 79 r-1,t-2,c-3-trimethylcyclopentane 0.75869 55.006 758.01 -0.00113 3.8744 0.2107 4.7458 148.0 159.7 80 1,1,2-trimethylcyclopentane 0.77696 50.620 776.27 -0.00106 3.8744 0.2107 4.7458 144.6 163.6 81 1,cis-2,trans-4-trimethylcyclopentane 0.76834 52.663 767.65 -0.00110 3.8744 0.2107 4.7458 146.2 161.8 82 r-1,c-2,t-3-trimethylcyclopentane 0.77500 51.081 774.31 -0.00112 3.8744 0.2107 4.7458 144.9 163.2 83 trans-1,4-dimethylcyclohexane 0.76760 52.841 766.91 -0.00110 3.8744 0.2107 4.7458 146.3 161.6 84 1,1-dimethylcyclohexane 0.78566 48.603 784.96 -0.00103 3.8744 0.2107 4.7458 143.0 165.4 85 trans-1,3-dimethylcyclohexane 0.78830 48.000 787.60 -0.00106 3.8744 0.2107 4.7458 142.5 166.0 86 trans-1-ethyl-3-methylcyclopentane 0.76693 53.002 766.24 -0.00110 3.8744 0.2107 4.7458 146.4 161.5 87 cis-1-ethyl-3-methylcyclopentane 0.77722 50.559 776.52 -0.00112 3.8744 0.2107 4.7458 144.5 163.6 88 trans-1-ethyl-2-methylcyclopentane 0.77411 51.291 773.41 -0.00108 3.8744 0.2107 4.7458 145.1 163.0 89 1-ethyl-1-methylcyclopentane 0.78572 48.590 785.01 -0.00106 3.8744 0.2107 4.7458 142.9 165.4 90 1,cis-2,cis-3-trimethylcyclopentane 0.78315 49.181 782.45 -0.00104 3.8744 0.2107 4.7458 143.4 164.9 91 cis-1,4-dimethylcyclohexane 0.78763 48.153 786.93 -0.00104 3.8744 0.2107 4.7458 142.6 165.8 92 cis-1,3-dimethylcyclohexane 0.77145 51.921 770.76 -0.00106 3.8744 0.2107 4.7458 145.6 162.4 93 isopropylcyclopentane 0.78112 49.650 780.42 -0.00101 3.8744 0.2107 4.7458 143.8 164.4 94 cis-1-ethyl-2-methylcyclopentane 0.78998 47.618 789.27 -0.00101 3.8744 0.2107 4.7458 142.2 166.3 95 cis-1,2-dimethylcyclohexane 0.80129 45.090 800.57 -0.00101 3.8744 0.2107 4.7458 140.2 168.7 96 propylcyclopentane 0.78100 49.678 780.30 -0.00104 3.8744 0.2107 4.7458 143.8 164.4 97 ethylcyclohexane 0.79302 46.932 792.30 -0.00103 3.8744 0.2107 4.7458 141.6 166.9 98 cyclooctane 0.84112 36.728 840.37 -0.00095 3.8744 0.2107 4.7458 133.5 177.1 99 2,2,4-trimethylpentane 0.69674 71.589 696.12 -0.00118 3.9440 0.2070 4.8310 164.1 144.1 100 2,2-dimethylhexane 0.70013 70.605 699.50 -0.00119 3.9440 0.2070 4.8310 163.3 144.8 101 2,5-dimethylhexane 0.69872 71.013 698.10 -0.00119 3.9440 0.2070 4.8310 163.6 144.5 102 2,4-dimethylhexane 0.70410 69.466 703.47 -0.00113 3.9440 0.2070 4.8310 162.4 145.6 103 2,2,3-trimethylpentane 0.72030 64.946 719.66 -0.00108 3.9440 0.2070 4.8310 158.7 149.0 104 3,3-dimethylhexane 0.71433 66.588 713.68 -0.00112 3.9440 0.2070 4.8310 160.1 147.7 105 2,3,4-trimethylpentane 0.72337 64.112 722.72 -0.00108 3.9440 0.2070 4.8310 158.1 149.6

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 40

Notes b,d e f b,d,g Density of Liquid Density of Ideal Gas Volume

Relative density (15 °C/15

°C) API

gravity Absolute

Temp. coef. of density Relative

density Volume Density Liquid

Ratio, ideal

gas/liquid 15 °C, 101.325 kPa 15 °C, sat 15 °C, 101.325 kPa 15 °C, 101.325 kPa

Compound - - kg/m3 1/K - m3/kg kg/m3 cm3/mol - 106 2,3-dimethylhexane 0.71725 65.781 716.61 -0.00110 3.9440 0.2070 4.8310 159.4 148.3 107 2-methylheptane 0.70234 69.969 701.71 -0.00117 3.9440 0.2070 4.8310 162.8 145.3 108 4-methylheptane 0.70925 68.007 708.61 -0.00115 3.9440 0.2070 4.8310 161.2 146.7 109 3,4-dimethylhexane 0.72356 64.061 722.91 -0.00110 3.9440 0.2070 4.8310 158.0 149.6 110 3-ethylhexane 0.71785 65.616 717.21 -0.00112 3.9440 0.2070 4.8310 159.3 148.5 111 3-methylheptane 0.71026 67.723 709.62 -0.00113 3.9440 0.2070 4.8310 161.0 146.9 112 isopropylbenzene 0.86710 31.688 866.32 -0.00099 4.1499 0.1967 5.0832 138.7 170.4 113 propylbenzene 0.86692 31.722 866.15 -0.00095 4.1499 0.1967 5.0832 138.8 170.4 114 m-ethyltoluene 0.86937 31.262 868.59 -0.00099 4.1499 0.1967 5.0832 138.4 170.9 115 p-ethyltoluene 0.86635 31.829 865.58 -0.00099 4.1499 0.1967 5.0832 138.9 170.3 116 1,3,5-trimethylbenzene 0.86990 31.162 869.12 -0.00097 4.1499 0.1967 5.0832 138.3 171.0 117 o-ethyltoluene 0.88576 28.250 884.96 -0.00094 4.1499 0.1967 5.0832 135.8 174.1 118 1,2,4-trimethylbenzene 0.88069 29.169 879.90 -0.00090 4.1499 0.1967 5.0832 136.6 173.1 119 1,2,3-trimethylbenzene 0.89907 25.885 898.26 -0.00088 4.1499 0.1967 5.0832 133.8 176.7 120 1,1,4-trimethylcyclohexane 0.77609 50.824 775.39 -0.00097 4.3587 0.1873 5.3390 162.8 145.2 121 1,1,3-trimethylcyclohexane 0.78338 49.128 782.68 -0.00097 4.3587 0.1873 5.3390 161.3 146.6 122 r-1,c-3,c-5-trimethylcyclohexane 0.77476 51.137 774.07 -0.00103 4.3587 0.1873 5.3390 163.1 145.0 123 r-1,c-3,t-5-trimethylcyclohexane 0.78382 49.026 783.11 -0.00094 4.3587 0.1873 5.3390 161.2 146.7 124 trans,trans-1,2,4-trimethylcyclohexane 0.77879 50.192 778.10 -0.00101 4.3587 0.1873 5.3390 162.2 145.7 125 cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane 0.79168 47.234 790.97 -0.00101 4.3587 0.1873 5.3390 159.6 148.1 126 r-1,t-2,c-3-trimethylcyclohexane 0.79172 47.225 791.01 -0.00103 4.3587 0.1873 5.3390 159.6 148.2 127 r-1,t-2,t-4-trimethylcyclohexane 0.79034 47.537 789.63 -0.00095 4.3587 0.1873 5.3390 159.9 147.9 128 cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane 0.79594 46.277 795.23 -0.00101 4.3587 0.1873 5.3390 158.7 148.9 129 1,1,2-trimethylcyclohexane 0.80321 44.668 802.49 -0.00092 4.3587 0.1873 5.3390 157.3 150.3 130 isobutylcyclopentane 0.78517 48.716 784.47 -0.00103 4.3587 0.1873 5.3390 160.9 146.9 131 cis,cis-1,2,3-trimethylcyclohexane 0.80722 43.793 806.50 -0.00099 4.3587 0.1873 5.3390 156.5 151.1 132 cis-1,2,trans-1,3-cyclohexane 0.80773 43.682 807.01 -0.00099 4.3587 0.1873 5.3390 156.4 151.2 133 isopropylcyclohexane 0.80666 43.915 805.93 -0.00095 4.3587 0.1873 5.3390 156.6 151.0 134 butylcyclopentane 0.78911 47.816 788.40 -0.00101 4.3587 0.1873 5.3390 160.1 147.7 135 propylcyclohexane 0.79849 45.709 797.78 -0.00098 4.3587 0.1873 5.3390 158.2 149.4 136 methylcyclooctane 0.83846 37.262 837.71 -0.00090 4.3587 0.1873 5.3390 150.7 156.9 137 2,2,4,4-tetramethylpentane 0.72407 63.923 723.42 -0.00108 4.4283 0.1844 5.4242 177.3 133.4 138 2,2,5-trimethylhexane 0.71178 67.297 711.14 -0.00113 4.4283 0.1844 5.4242 180.4 131.1 139 2,2,4-trimethylhexane 0.72008 65.006 719.44 -0.00106 4.4283 0.1844 5.4242 178.3 132.6 140 2,4,4-trimethylhexane 0.72827 62.796 727.62 -0.00106 4.4283 0.1844 5.4242 176.3 134.1

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Page 45: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 41

Notes b,d e f b,d,g Density of Liquid Density of Ideal Gas Volume

Relative density (15 °C/15

°C) API

gravity Absolute

Temp. coef. of density Relative

density Volume Density Liquid

Ratio, ideal

gas/liquid 15 °C, 101.325 kPa 15 °C, sat 15 °C, 101.325 kPa 15 °C, 101.325 kPa

Compound - - kg/m3 1/K - m3/kg kg/m3 cm3/mol - 141 2,3,5-trimethylhexane 0.72646 63.280 725.81 -0.00110 4.4283 0.1844 5.4242 176.7 133.8 142 2,4-dimethylheptane 0.71935 65.205 718.71 -0.00104 4.4283 0.1844 5.4242 178.5 132.5 143 2,2-dimethylheptane 0.71507 66.383 714.43 -0.00108 4.4283 0.1844 5.4242 179.5 131.7 144 2,2,3-trimethylhexane 0.73630 60.677 735.64 4.4283 0.1844 5.4242 174.3 135.6 145 2,6-dimethylheptane 0.71462 66.507 713.98 -0.00108 4.4283 0.1844 5.4242 179.6 131.6 146 2,5-dimethylheptane 0.72107 64.736 720.43 -0.00106 4.4283 0.1844 5.4242 178.0 132.8 147 3,5-dimethylheptane 0.72452 63.802 723.87 -0.00106 4.4283 0.1844 5.4242 177.2 133.5 148 3,3-dimethylheptane 0.73055 62.190 729.90 -0.00108 4.4283 0.1844 5.4242 175.7 134.6 149 2,3,3-trimethylhexane 0.73926 59.908 738.59 -0.00112 4.4283 0.1844 5.4242 173.6 136.2 150 2,3,4-trimethylhexane 0.74275 59.008 742.09 -0.00104 4.4283 0.1844 5.4242 172.8 136.8 151 2,2,3,3-tetramethylpentane 0.76099 54.442 760.31 -0.00097 4.4283 0.1844 5.4242 168.7 140.2 152 3,4-dimethylheptane 0.73602 60.750 735.36 -0.00101 4.4283 0.1844 5.4242 174.4 135.6 153 2,3-dimethylheptane 0.72978 62.394 729.13 -0.00106 4.4283 0.1844 5.4242 175.9 134.4 154 4-methyloctane 0.72657 63.251 725.91 -0.00106 4.4283 0.1844 5.4242 176.7 133.8 155 2-methyloctane 0.71770 65.658 717.05 -0.00108 4.4283 0.1844 5.4242 178.9 132.2 156 3-methyloctane 0.72519 63.621 724.54 -0.00106 4.4283 0.1844 5.4242 177.0 133.6 157 naphthalene 1.0304 5.8253 1029.5 4.4254 0.1845 5.4207 124.5 189.9 158 tert-butylbenzene 0.87135 30.892 870.57 -0.00095 4.6342 0.1762 5.6764 154.2 153.4 159 isobutylbenzene 0.85775 33.466 856.98 -0.00094 4.6342 0.1762 5.6764 156.6 151.0 160 sec-butylbenzene 0.86694 31.718 866.16 -0.00085 4.6342 0.1762 5.6764 155.0 152.6 161 1-methyl-3-isopropylbenzene 0.86567 31.957 864.89 -0.00092 4.6342 0.1762 5.6764 155.2 152.4 162 1-methyl-4-isopropylbenzene 0.86160 32.729 860.83 -0.00094 4.6342 0.1762 5.6764 155.9 151.6 163 1-methyl-2-isopropylbenzene 0.88060 29.186 879.81 -0.00090 4.6342 0.1762 5.6764 152.6 155.0 164 1,3-diethylbenzene 0.86862 31.402 867.85 -0.00094 4.6342 0.1762 5.6764 154.7 152.9 165 1-methyl-3-propylbenzene 0.86601 31.893 865.24 -0.00092 4.6342 0.1762 5.6764 155.1 152.4 166 butylbenzene 0.86496 32.091 864.19 -0.00094 4.6342 0.1762 5.6764 155.3 152.2 167 1-methyl-4-propylbenzene 0.86315 32.434 862.37 -0.00094 4.6342 0.1762 5.6764 155.6 151.9 168 1,2-diethylbenzene 0.88472 28.438 883.93 -0.00090 4.6342 0.1762 5.6764 151.8 155.7 169 1,4-diethylbenzene 0.86664 31.774 865.87 -0.00101 4.6342 0.1762 5.6764 155.0 152.5 170 1-methyl-2-propylbenzene 0.87864 29.544 877.85 -0.00088 4.6342 0.1762 5.6764 152.9 154.6 171 1,4-dimethyl-2-ethylbenzene 0.88212 28.909 881.33 -0.00103 4.6342 0.1762 5.6764 152.3 155.3 172 1,2-dimethyl-4-ethylbenzene 0.87885 29.506 878.06 -0.00092 4.6342 0.1762 5.6764 152.9 154.7 173 1,3-dimethyl-2-ethylbenzene 0.89519 26.567 894.39 -0.00090 4.6342 0.1762 5.6764 150.1 157.6 174 1,2-dimethyl-3-ethylbenzene 0.89670 26.301 895.90 -0.00090 4.6342 0.1762 5.6764 149.8 157.8 175 1,2,4,5-tetramethylbenzene 0.89112 27.289 890.32 -0.00101 4.6342 0.1762 5.6764 150.8 156.8

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Page 46: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 42

Notes b,d e f b,d,g Density of Liquid Density of Ideal Gas Volume

Relative density (15 °C/15

°C) API

gravity Absolute

Temp. coef. of density Relative

density Volume Density Liquid

Ratio, ideal

gas/liquid 15 °C, 101.325 kPa 15 °C, sat 15 °C, 101.325 kPa 15 °C, 101.325 kPa

Compound - - kg/m3 1/K - m3/kg kg/m3 cm3/mol - 176 1,2,3,5-tetramethylbenzene 0.89487 26.624 894.07 -0.00085 4.6342 0.1762 5.6764 150.1 157.5 177 1,2,3,4-tetramethylbenzene 0.90953 24.075 908.71 -0.00088 4.6342 0.1762 5.6764 147.7 160.1 178 tert-butylcyclohexane 0.81713 41.667 816.39 -0.00095 4.8430 0.1686 5.9322 171.8 137.6 179 butylcyclohexane 0.80367 44.567 802.94 -0.00097 4.8430 0.1686 5.9322 174.7 135.4 180 cyclodecane 0.86351 32.366 862.73 -0.00092 4.8430 0.1686 5.9322 162.6 145.4 181 isobutylcyclohexane 0.79994 45.388 799.22 -0.00097 4.8430 0.1686 5.9322 175.5 134.7 182 2,2-dimethyloctane 0.72919 62.551 728.54 -0.00101 4.9126 0.1662 6.0175 195.3 121.1 183 3,6-dimethyloctane 0.74007 59.698 739.41 -0.00110 4.9126 0.1662 6.0175 192.4 122.9 184 3,3-dimethyloctane 0.74322 58.888 742.55 -0.00101 4.9126 0.1662 6.0175 191.6 123.4 185 2,3-dimethyloctane 0.74252 59.067 741.85 -0.00103 4.9126 0.1662 6.0175 191.8 123.3 186 5-methylnonane 0.73651 60.622 735.85 -0.00103 4.9126 0.1662 6.0175 193.4 122.3 187 3-ethyloctane 0.76245 54.086 761.77 -0.00103 4.9126 0.1662 6.0175 186.8 126.6 188 4-methylnonane 0.73652 60.620 735.86 -0.00115 4.9126 0.1662 6.0175 193.4 122.3 189 2-methylnonane 0.73089 62.100 730.23 -0.00103 4.9126 0.1662 6.0175 194.8 121.4 190 3-methylnonane 0.73752 60.359 736.86 -0.00103 4.9126 0.1662 6.0175 193.1 122.5 191 (2-methylbutyl)benzene 0.86429 32.218 863.51 -0.00092 5.1185 0.1595 6.2696 171.7 137.7 192 1-tert-butyl-2-methylbenzene 0.89423 26.737 893.43 -0.00090 5.1185 0.1595 6.2696 165.9 142.5 193 pentylbenzene 0.86386 32.300 863.08 -0.00090 5.1185 0.1595 6.2696 171.8 137.7 194 n-undecane 0.74479 58.486 744.12 -0.00103 5.3969 0.1513 6.6107 210.1 112.6 195 1-tert-butyl-3,5-dimethylbenzene 0.86980 31.181 869.02 -0.00094 5.6028 0.1457 6.8629 186.7 126.6 196 1,3,5-triethylbenzene 0.86686 31.733 866.08 -0.00095 5.6028 0.1457 6.8629 187.4 126.2 197 1,2,4-triethylbenzene 0.88300 28.749 882.21 -0.00094 5.6028 0.1457 6.8629 183.9 128.5 198 hexylbenzene 0.86361 32.347 862.84 -0.00088 5.6028 0.1457 6.8629 188.1 125.7 199 n-dodecane 0.75383 56.208 753.15 -0.00099 5.8812 0.1388 7.2039 226.2 104.5 200 n-tridecane 0.76063 54.530 759.95 -0.00094 6.3655 0.1283 7.7971 242.6 97.47 201 n-tetradecane 0.76741 52.886 766.72 -0.00095 6.8498 0.1192 8.3903 258.7 91.38 202 n-pentadecane 0.77248 51.676 771.79 -0.00090 7.3341 0.1113 8.9836 275.2 85.91 203 n-hexadecane 0.77766 50.456 776.96 7.8184 0.1044 9.5768 291.4 81.13

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 43

Notes p b,d,i b,d,i

Summation Factor Compress-ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=101.325 kPa Fuel as Liquid Fuel as Ideal gas

Fuel as Liquid

Fuel as Ideal gas

15 °C 15 °C 15 °C, ideal reaction Compound 1/kPa0.5 - - MJ/kg MJ/m3 MJ/kg MJ/m3 MJ/kg MJ/m3

1 methane 0.00442 0.04453 55.575 37.706 33.95 2 ethane 0.00910 0.0916 0.5834 51.604 18467. 51.951 66.066 47.172 60.43 3 propane 0.0132 0.1333 0.8514 49.990 25370. 50.369 93.934 45.961 86.42 4 isobutane 0.0168 0.1695 0.9198 49.038 27606. 49.388 121.40 45.216 112.0 5 n-butane 0.0179 0.1807 0.9394 49.166 28725. 49.546 121.79 45.345 112.4 6 isopentane 0.0220 0.2214 0.9682 48.593 30375. 48.950 149.36 44.898 138.1 7 n-pentane 0.0232 0.2330 0.9744 48.668 30691. 49.045 149.65 44.974 138.4 8 n-hexane 0.0296 0.2984 0.9886 48.342 32095. 48.715 177.55 44.735 164.39 9 n-heptane 0.0364 0.3660 0.9952 48.103 33096. 48.474 205.42 44.555 190.39 10 n-octane 0.0431 0.4343 0.9981 47.919 33845. 48.290 233.29 44.418 216.38 11 n-nonane 0.0500 0.5028 0.9992 47.784 34498. 48.152 261.19 44.320 242.40 12 n-decane 0.0595 0.5991 0.9997 47.671 35004. 48.037 289.06 44.236 268.39 13 ethylene 0.0079 0.0798 50.337 59.721 55.96 14 propylene 0.0125 0.1258 0.8362 48.557 25395. 48.941 87.097 45.390 81.46 15 carbon dioxide 0.00745 0.0750 0.5814 16 hydrogen sulfide 0.00913 0.0920 0.8475 16.031 12815. 16.501 23.784 14.727 21.905 17 nitrogen 0.00170 0.01712 18 oxygen 0.00275 0.02764 19 helium 20 water 0.02495 0.2511 0.9989 2.4662 1.8790 21 hydrogen 141.95 12.102 10.223 22 carbon monoxide 0.00216 0.0217 10.100 11.965 11.965 23 hydrogen chloride 0.0081 0.0814 0.6618 24 carbonyl sulfide 0.0111 0.1114 0.8618 9.1089 9278.2 9.1242 23.182 9.1089 23.182 25 chlorine 0.0127 0.1282 0.8965 7.9745 10660. 7.9924 23.967 7.9745 23.967 26 ammonia 0.0109 0.1093 0.9043 21.257 13126. 22.519 16.220 17.344 13.401 27 sulfur dioxide 0.0138 0.1388 0.9433 -5.0074 -6986.9 -4.6330 -12.553 -5.0074 -12.553 28 methanol 0.0293 0.2950 0.9805 22.677 18044. 23.878 32.358 19.904 28.599 29 ethanol 0.0289 0.2910 0.9964 29.083 23083. 30.015 58.480 26.190 52.843 30 ethyne 0.0083 0.0836 49.973 21230. 49.981 55.038 48.266 53.159 31 1,2-propadiene 0.0123 0.1236 0.9058 48.504 28884. 48.522 82.215 46.286 78.457 32 1-propyne 0.0135 0.1363 0.9100 33 1,3-butadiene 0.0174 0.1749 0.9392 46.976 29443. 46.997 107.51 44.512 101.88 34 1,2-butadiene 0.0171 0.1718 0.9664 47.954 31620. 47.977 109.75 45.489 104.12 35 2-methylpropene 0.0174 0.1750 0.9276 47.779 28702. 48.160 114.28 44.611 106.76

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Page 48: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 44

Notes p b,d,i b,d,i Summation Factor Compress-

ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=101.325 kPa Fuel as Liquid Fuel as Ideal gas

Fuel as Liquid

Fuel as Ideal gas

15 °C 15 °C 15 °C, ideal reaction Compound 1/kPa0.5 - - MJ/kg MJ/m3 MJ/kg MJ/m3 MJ/kg MJ/m3

36 1-butene 0.0174 0.1750 0.9297 48.075 28870. 48.456 114.98 44.907 107.46 37 (E)-2-butene 0.0182 0.1837 0.9404 47.869 29217. 48.270 114.54 44.702 107.02 38 (Z)-2-butene 0.0183 0.1838 0.9462 47.924 30057. 48.336 114.69 44.757 107.18 39 2-methyl-1,3-butadiene 0.0223 0.2250 0.9750 46.755 32023. 46.782 134.77 44.146 127.25 40 3-methyl-1-butene 0.0213 0.2147 0.9616 41 1-pentene 0.0227 0.2281 0.9700 48.136 31109. 48.162 142.85 44.969 133.46 42 2-methyl-1-butene 0.0222 0.2231 0.9726 43 (E)-2-pentene 0.0229 0.2310 0.9760 44 (Z)-2-pentene 0.0229 0.2303 0.9767 45 2-methyl-2-butene 0.0214 0.2157 0.9806 46 cyclopentane 0.0219 0.2204 0.9863 46.955 35229. 47.370 140.50 43.787 131.11 47 2,2-dimethylpropane 0.0198 0.1996 0.9489 48.435 28834. 48.753 148.76 44.741 137.49 48 benzene 0.0250 0.2521 0.9951 41.843 36996. 42.284 139.69 40.137 134.05 49 methylcyclopentane 0.0240 0.2416 0.9933 47.169 35540. 47.202 168.01 44.002 156.73 50 cyclohexane 0.0266 0.2677 0.9942 46.607 36510. 47.006 167.31 43.439 156.04 51 2,2-dimethylbutane 0.0233 0.2345 0.9845 48.487 31706. 48.515 176.82 44.878 163.66 52 2,3-dimethylbutane 0.0256 0.2580 0.9865 48.576 32343. 48.606 177.15 44.967 163.99 53 2-methylpentane 0.0279 0.2805 0.9855 48.274 31750. 48.629 177.23 44.665 164.08 54 3-methylpentane 0.0271 0.2729 0.9879 48.628 32532. 48.659 177.34 45.019 164.19 55 toluene 0.0333 0.3356 0.9975 42.449 36996. 42.868 167.05 40.521 159.53 56 1,1-dimethylcyclopentane 0.0290 0.2919 0.9947 46.646 35403. 46.680 193.84 43.478 180.69 57 trans-1,3-dimethylcyclopentane 0.0253 0.2551 0.9964 46.686 35166. 46.720 194.01 43.518 180.85 58 cis-1,3-dimethylcyclopentane 0.0325 0.3269 0.9944 46.665 34965. 46.700 193.92 43.497 180.77 59 trans-1,2-dimethylcyclopentane 0.0220 0.2217 0.9974 46.653 35262. 46.689 193.88 43.486 180.72 60 cis-1,2-dimethylcyclopentane 0.0245 0.2463 0.9977 46.713 36297. 46.749 194.13 43.545 180.97 61 methylcyclohexane 0.0267 0.2687 0.9973 46.856 36254. 46.891 194.72 43.688 181.56 62 ethylcyclopentane 0.0233 0.2345 0.9983 47.138 36331. 47.175 195.90 43.970 182.74 63 cycloheptane 0.0370 0.3728 0.9977 46.799 38166. 46.838 194.49 43.631 181.34 64 2,2-dimethylpentane 0.0330 0.3320 0.9904 47.883 32473. 47.916 203.06 44.336 188.03 65 2,4-dimethylpentane 0.0314 0.3161 0.9919 47.938 32457. 47.971 203.29 44.391 188.26 66 2,2,3-trimethylbutane 0.0445 0.4483 0.9829 47.918 33271. 47.951 203.21 44.371 188.17 67 3,3-dimethylpentane 0.0293 0.2950 0.9941 47.924 33457. 47.958 203.24 44.377 188.20 68 2,3-dimethylpentane 0.0276 0.2776 0.9957 47.961 33534. 47.996 203.40 44.413 188.36 69 2-methylhexane 0.0391 0.3932 0.9918 47.985 32778. 48.020 203.50 44.438 188.47 70 3-methylhexane 0.0426 0.4285 0.9910 48.015 33191. 48.051 203.63 44.468 188.60 71 3-ethylpentane 0.0396 0.3985 0.9926 48.031 33761. 48.066 203.70 44.483 188.66

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Page 49: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 45

Notes p b,d,i b,d,i Summation Factor Compress-

ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=101.325 kPa Fuel as Liquid Fuel as Ideal gas

Fuel as Liquid

Fuel as Ideal gas

15 °C 15 °C 15 °C, ideal reaction Compound 1/kPa0.5 - - MJ/kg MJ/m3 MJ/kg MJ/m3 MJ/kg MJ/m3

72 styrene 0.0296 0.2976 0.9996 42.156 38402. 42.201 185.88 40.450 178.37 73 ethylbenzene 0.0377 0.3796 0.9990 43.015 37477. 43.419 194.95 40.923 185.55 74 p-xylene 0.0410 0.4125 0.9989 42.479 36761. 42.884 192.55 40.387 183.15 75 m-xylene 0.0392 0.3949 0.9991 42.467 36882. 42.875 192.51 40.374 183.11 76 o-xylene 0.0438 0.4410 0.9991 42.902 37944. 43.316 194.49 40.809 185.09 77 1,1,3-trimethylcyclopentane 0.0246 0.2472 0.9981 46.988 35361. 47.024 223.17 43.820 208.13 78 1,trans-2,cis-4-trimethylcyclopentane 0.0209 0.2107 0.9989 46.932 35271. 46.970 222.91 43.765 207.88 79 r-1,t-2,c-3-trimethylcyclopentane 0.0229 0.2302 0.9987 46.932 35575. 46.970 222.91 43.765 207.88 80 1,1,2-trimethylcyclopentane 0.0228 0.2295 0.9989 46.885 36395. 46.923 222.68 43.717 207.65 81 1,cis-2,trans-4-trimethylcyclopentane 0.0276 0.2779 0.9985 46.932 36027. 46.970 222.91 43.764 207.88 82 r-1,c-2,t-3-trimethylcyclopentane 0.0216 0.2170 0.9992 46.931 36339. 46.970 222.91 43.763 207.88 83 trans-1,4-dimethylcyclohexane 0.0231 0.2326 0.9990 46.412 35594. 46.451 220.44 43.245 205.41 84 1,1-dimethylcyclohexane 0.0285 0.2872 0.9986 46.444 36457. 46.483 220.60 43.277 205.56 85 trans-1,3-dimethylcyclohexane 0.0240 0.2419 0.9990 46.471 36601. 46.510 220.73 43.304 205.69 86 trans-1-ethyl-3-methylcyclopentane 0.0206 0.2079 0.9993 46.647 35743. 46.685 221.56 43.479 206.53 87 cis-1-ethyl-3-methylcyclopentane 0.0234 0.2359 0.9991 46.661 36233. 46.700 221.63 43.493 206.59 88 trans-1-ethyl-2-methylcyclopentane 0.0264 0.2656 0.9988 46.655 36083. 46.693 221.60 43.487 206.56 89 1-ethyl-1-methylcyclopentane 0.0232 0.2332 0.9992 46.666 36633. 46.705 221.65 43.498 206.62 90 1,cis-2,cis-3-trimethylcyclopentane 0.0259 0.2611 0.9990 46.931 36721. 46.970 222.91 43.763 207.88 91 cis-1,4-dimethylcyclohexane 0.0184 0.1857 0.9995 46.471 36570. 46.511 220.73 43.304 205.70 92 cis-1,3-dimethylcyclohexane 0.0379 0.3817 0.9980 46.406 35768. 46.446 220.42 43.239 205.39 93 isopropylcyclopentane 0.0292 0.2941 0.9989 46.984 36668. 47.024 223.17 43.817 208.13 94 cis-1-ethyl-2-methylcyclopentane 0.0136 0.1368 0.9998 46.691 36852. 46.732 221.78 43.523 206.74 95 cis-1,2-dimethylcyclohexane 0.0186 0.1869 0.9996 46.505 37230. 46.545 220.89 43.337 205.86 96 propylcyclopentane 0.0221 0.2220 0.9995 46.708 36446. 46.749 221.86 43.540 206.83 97 ethylcyclohexane 0.0158 0.1587 0.9998 46.896 37156. 46.937 222.75 43.728 207.72 98 cyclooctane 0.0442 0.4447 0.9992 46.888 39403. 46.932 222.73 43.720 207.70 99 2,2,4-trimethylpentane 0.0358 0.3603 0.9949 47.498 33064. 47.811 230.98 43.997 214.06 100 2,2-dimethylhexane 0.0265 0.2669 0.9981 47.749 33401. 47.787 230.86 44.249 213.95 101 2,5-dimethylhexane 0.0313 0.3154 0.9977 47.762 33342. 47.800 230.92 44.261 214.01 102 2,4-dimethylhexane 0.0899 0.9045 0.9808 47.792 33620. 47.830 231.07 44.291 214.15 103 2,2,3-trimethylpentane 0.0257 0.2586 0.9983 47.793 34394. 47.831 231.07 44.292 214.16 104 3,3-dimethylhexane 0.0179 0.1800 0.9993 47.787 34105. 47.825 231.04 44.286 214.13 105 2,3,4-trimethylpentane 0.0240 0.2419 0.9988 47.809 34552. 47.847 231.15 44.308 214.24 106 2,3-dimethylhexane 0.0202 0.2035 0.9993 47.829 34275. 47.868 231.25 44.328 214.34 107 2-methylheptane 0.0169 0.1697 0.9996 47.807 33547. 47.847 231.15 44.306 214.24

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Page 50: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 46

Notes p b,d,i b,d,i Summation Factor Compress-

ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=101.325 kPa Fuel as Liquid Fuel as Ideal gas

Fuel as Liquid

Fuel as Ideal gas

15 °C 15 °C 15 °C, ideal reaction Compound 1/kPa0.5 - - MJ/kg MJ/m3 MJ/kg MJ/m3 MJ/kg MJ/m3

108 4-methylheptane 0.0320 0.3221 0.9984 47.837 33897. 47.877 231.29 44.336 214.38 109 3,4-dimethylhexane 0.0224 0.2253 0.9992 47.835 34581. 47.875 231.29 44.335 214.37 110 3-ethylhexane 0.0189 0.1906 0.9994 47.848 34317. 47.888 231.35 44.347 214.44 111 3-methylheptane 0.0165 0.1658 0.9996 47.830 33941. 47.871 231.26 44.329 214.35 112 isopropylbenzene 0.0326 0.3282 0.9996 43.347 37552. 43.393 220.57 41.129 209.30 113 propylbenzene 0.0333 0.3349 0.9997 43.369 37564. 43.416 220.69 41.151 209.42 114 m-ethyltoluene 0.0337 0.3396 0.9998 43.282 37594. 43.330 220.25 41.064 208.98 115 p-ethyltoluene 0.0335 0.3370 0.9998 43.272 37456. 43.321 220.21 41.054 208.93 116 1,3,5-trimethylbenzene 0.0343 0.3448 0.9998 43.161 37512. 43.207 219.63 40.943 208.36 117 o-ethyltoluene 0.0338 0.3407 0.9998 43.301 38319. 43.349 220.35 41.083 209.08 118 1,2,4-trimethylbenzene 0.0341 0.3435 0.9998 43.172 37986. 43.221 219.70 40.953 208.43 119 1,2,3-trimethylbenzene 0.0340 0.3420 0.9999 43.198 38803. 43.248 219.84 40.980 208.56 120 1,1,4-trimethylcyclohexane 0.0217 0.2186 0.9995 46.677 36193. 46.717 249.42 43.510 232.51 121 1,1,3-trimethylcyclohexane 0.0134 0.1350 0.9998 46.767 36603. 46.808 249.91 43.599 232.99 122 r-1,c-3,c-5-trimethylcyclohexane 0.0177 0.1785 0.9998 46.716 36161. 46.759 249.65 43.549 232.74 123 r-1,c-3,t-5-trimethylcyclohexane 0.0338 0.3404 0.9993 46.717 36584. 46.759 249.65 43.549 232.74 124 trans,trans-1,2,4-trimethylcyclohexane 0.0156 0.1569 0.9998 46.718 36351. 46.759 249.65 43.550 232.74 125 cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane 0.0340 0.3422 0.9993 46.716 36951. 46.759 249.65 43.548 232.74 126 r-1,t-2,c-3-trimethylcyclohexane 0.0341 0.3428 0.9993 46.717 36953. 46.759 249.65 43.549 232.74 127 r-1,t-2,t-4-trimethylcyclohexane 0.0341 0.3434 0.9993 46.716 36889. 46.759 249.65 43.548 232.74 128 cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane 0.0344 0.3458 0.9994 46.716 37150. 46.759 249.65 43.548 232.74 129 1,1,2-trimethylcyclohexane 0.0262 0.2640 0.9996 46.676 37457. 46.717 249.42 43.508 232.51 130 isobutylcyclopentane 0.0341 0.3429 0.9994 46.994 36866. 47.038 251.14 43.827 234.22 131 cis,cis-1,2,3-trimethylcyclohexane 0.0347 0.3494 0.9995 46.715 37676. 46.759 249.65 43.548 232.74 132 cis-1,2,trans-1,3-cyclohexane 0.0349 0.3517 0.9995 46.715 37699. 46.759 249.65 43.547 232.74 133 isopropylcyclohexane 0.0333 0.3356 0.9996 46.763 37688. 46.808 249.91 43.595 232.99 134 butylcyclopentane 0.0344 0.3459 0.9997 47.040 37086. 47.087 251.39 43.872 234.48 135 propylcyclohexane 0.0490 0.4937 0.9993 46.184 36845. 46.547 248.51 43.017 231.60 136 methylcyclooctane 0.0342 0.3448 0.9997 47.174 39518. 47.218 252.10 44.006 235.18 137 2,2,4,4-tetramethylpentane 0.0206 0.2079 0.9993 47.674 34488. 47.713 258.81 44.209 240.01 138 2,2,5-trimethylhexane 0.0331 0.3330 0.9986 47.571 33830. 47.612 258.26 44.107 239.47 139 2,2,4-trimethylhexane 0.0082 0.0821 0.9999 47.654 34284. 47.694 258.70 44.190 239.91 140 2,4,4-trimethylhexane 0.0314 0.3160 0.9990 47.674 34688. 47.715 258.82 44.210 240.03 141 2,3,5-trimethylhexane 0.0340 0.3418 0.9989 47.643 34580. 47.685 258.65 44.179 239.86 142 2,4-dimethylheptane 0.0346 0.3480 0.9990 47.989 34490. 48.032 260.53 44.525 241.74 143 2,2-dimethylheptane 0.0346 0.3487 0.9990 47.610 34014. 47.653 258.48 44.145 239.69

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Page 51: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 47

Notes p b,d,i b,d,i Summation Factor Compress-

ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=101.325 kPa Fuel as Liquid Fuel as Ideal gas

Fuel as Liquid

Fuel as Ideal gas

15 °C 15 °C 15 °C, ideal reaction Compound 1/kPa0.5 - - MJ/kg MJ/m3 MJ/kg MJ/m3 MJ/kg MJ/m3

144 2,2,3-trimethylhexane 0.0173 0.1743 0.9997 47.653 35056. 47.695 258.71 44.189 239.92 145 2,6-dimethylheptane 0.0348 0.3507 0.9991 47.969 34249. 48.012 260.43 44.504 241.64 146 2,5-dimethylheptane 0.0348 0.3506 0.9991 47.989 34572. 48.032 260.53 44.524 241.74 147 3,5-dimethylheptane 0.0349 0.3517 0.9991 48.009 34752. 48.052 260.64 44.544 241.85 148 3,3-dimethylheptane 0.0349 0.3515 0.9991 47.968 35012. 48.011 260.42 44.504 241.63 149 2,3,3-trimethylhexane 0.0342 0.3440 0.9992 47.665 35205. 47.708 258.78 44.201 239.99 150 2,3,4-trimethylhexane 0.0344 0.3459 0.9991 48.002 35622. 48.044 260.60 44.538 241.81 151 2,2,3,3-tetramethylpentane 0.0333 0.3351 0.9992 47.688 36257. 47.730 258.90 44.223 240.11 152 3,4-dimethylheptane 0.0351 0.3535 0.9993 48.027 35317. 48.071 260.75 44.563 241.96 153 2,3-dimethylheptane 0.0352 0.3538 0.9993 48.007 35003. 48.052 260.64 44.543 241.85 154 4-methyloctane 0.0359 0.3613 0.9996 48.030 34866. 48.079 260.79 44.566 242.00 155 2-methyloctane 0.0362 0.3645 0.9995 48.013 34428. 48.060 260.69 44.549 241.90 156 3-methyloctane 0.0355 0.3574 0.9994 48.034 34802. 48.079 260.79 44.570 242.00 157 naphthalene 0.0675 0.6799 0.9999 40.170 41355. 40.225 218.05 38.783 210.53 158 tert-butylbenzene 0.0606 0.6097 0.9994 43.645 37996. 43.693 248.02 41.328 234.87 159 isobutylbenzene 0.0354 0.3559 0.9998 43.657 37413. 43.706 248.09 41.339 234.94 160 sec-butylbenzene 0.0604 0.6078 0.9995 43.682 37836. 43.731 248.24 41.365 235.08 161 1-methyl-3-isopropylbenzene 0.0363 0.3658 0.9999 43.965 38024. 44.014 249.84 41.647 236.69 162 1-methyl-4-isopropylbenzene 0.0369 0.3717 0.9999 43.965 37846. 44.014 249.84 41.647 236.69 163 1-methyl-2-isopropylbenzene 0.0367 0.3694 0.9999 43.964 38680. 44.014 249.84 41.647 236.69 164 1,3-diethylbenzene 0.0376 0.3789 0.9999 44.019 38202. 44.071 250.17 41.702 237.01 165 1-methyl-3-propylbenzene 0.0389 0.3915 0.9998 44.012 38080. 44.061 250.11 41.694 236.96 166 butylbenzene 0.0622 0.6265 0.9997 43.705 37769. 43.756 248.38 41.388 235.23 167 1-methyl-4-propylbenzene 0.0384 0.3869 0.9999 44.010 37953. 44.061 250.11 41.693 236.96 168 1,2-diethylbenzene 0.0375 0.3775 0.9999 44.019 38910. 44.071 250.17 41.702 237.01 169 1,4-diethylbenzene 0.0378 0.3800 0.9999 44.019 38114. 44.071 250.17 41.701 237.01 170 1-methyl-2-propylbenzene 0.0387 0.3894 0.9999 44.011 38635. 44.061 250.11 41.693 236.96 171 1,4-dimethyl-2-ethylbenzene 0.0378 0.3806 0.9999 43.540 38373. 43.594 247.46 41.223 234.30 172 1,2-dimethyl-4-ethylbenzene 0.0380 0.3822 0.9999 43.530 38222. 43.585 247.41 41.213 234.25 173 1,3-dimethyl-2-ethylbenzene 0.0378 0.3805 0.9999 43.576 38974. 43.629 247.65 41.259 234.50 174 1,2-dimethyl-3-ethylbenzene 0.0381 0.3836 0.9999 43.572 39036. 43.626 247.64 41.255 234.49 175 1,2,4,5-tetramethylbenzene 0.0388 0.3904 1.0000 43.266 38521. 43.320 245.90 40.949 232.75 176 1,2,3,5-tetramethylbenzene 0.1762 1.7733 0.9992 43.449 38846. 43.502 246.94 41.132 233.78 177 1,2,3,4-tetramethylbenzene 0.1605 1.6151 0.9994 43.496 39525. 43.549 247.20 41.179 234.05 178 tert-butylcyclohexane 0.0361 0.3637 0.9998 46.676 38106. 46.724 277.18 43.509 258.39 179 butylcyclohexane 0.0387 0.3893 0.9999 46.506 37342. 46.557 276.18 43.338 257.39

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Page 52: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 48

Notes p b,d,i b,d,i Summation Factor Compress-

ibility Factor

Gross Heating Value Net Heating Value Z=1-P*b2 Z=1-P/P0*b2

P0=101.325 kPa Fuel as Liquid Fuel as Ideal gas

Fuel as Liquid

Fuel as Ideal gas

15 °C 15 °C 15 °C, ideal reaction Compound 1/kPa0.5 - - MJ/kg MJ/m3 MJ/kg MJ/m3 MJ/kg MJ/m3

180 cyclodecane 0.0372 0.3748 0.9999 46.910 40470. 46.962 278.59 43.742 259.79 181 isobutylcyclohexane 46.799 37403. 46.842 277.88 43.632 259.08 182 2,2-dimethyloctane 0.0386 0.3883 0.9996 47.824 34842. 47.872 288.06 44.389 267.39 183 3,6-dimethyloctane 0.0382 0.3842 0.9995 47.899 35417. 47.945 288.50 44.464 267.83 184 3,3-dimethyloctane 0.0390 0.3926 0.9996 47.861 35539. 47.907 288.28 44.426 267.61 185 2,3-dimethyloctane 0.0392 0.3950 0.9998 47.895 35531. 47.945 288.50 44.460 267.83 186 5-methylnonane 0.0397 0.3994 0.9998 47.541 34983. 47.591 286.38 44.106 265.71 187 3-ethyloctane 0.0393 0.3951 0.9997 47.939 36519. 47.987 288.76 44.504 268.09 188 4-methylnonane 0.0409 0.4118 0.9998 47.916 35260. 47.970 288.66 44.481 267.99 189 2-methylnonane 0.0407 0.4094 0.9998 47.527 34706. 47.578 286.30 44.092 265.63 190 3-methylnonane 0.0400 0.4022 0.9998 47.920 35310. 47.970 288.66 44.485 267.99 191 (2-methylbutyl)benzene 0.0398 0.4004 0.9999 44.339 38287. 44.393 278.33 41.941 263.30 192 1-tert-butyl-2-methylbenzene 0.0401 0.4034 0.9999 44.209 39498. 44.260 277.50 41.812 262.46 193 pentylbenzene 0.0412 0.4148 1.0000 44.361 38287. 44.418 278.48 41.963 263.45 194 n-undecane 0.0861 0.8671 0.9998 47.575 35401. 47.942 316.93 44.164 294.38 195 1-tert-butyl-3,5-dimethylbenzene 0.0413 0.4159 1.0000 43.993 38231. 44.050 302.31 41.528 285.40 196 1,3,5-triethylbenzene 0.0447 0.4500 1.0000 44.445 38493. 44.506 305.44 41.981 288.52 197 1,2,4-triethylbenzene 0.0447 0.4499 1.0000 44.446 39211. 44.506 305.44 41.982 288.52 198 hexylbenzene 0.0454 0.4573 1.0000 44.576 38462. 44.638 306.34 42.112 289.43 199 n-dodecane 0.0756 0.7615 1.0000 47.499 35774. 47.866 344.82 44.108 320.39 200 n-tridecane 0.0541 0.5447 1.0000 47.731 36273. 47.797 372.68 44.357 346.37 201 n-tetradecane 0.0584 0.5877 1.0000 47.669 36549. 47.740 400.56 44.310 372.37 202 n-pentadecane 0.0632 0.6360 1.0000 47.616 36749. 47.691 428.43 44.269 398.37 203 n-hexadecane 0.0662 0.6659 1.0000 47.165 36645. 47.244 452.44 43.829 420.50

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Page 53: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 49

Notes j b,k b,m n 4 5,o

Volume of Air Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper Motor

Method D-357

Research Method D-908

101.325 kPa 15 °C 15 °C

310.93 K, 101.325 kPa

Compound - kJ/kg kJ/(kg-K) - - (volume % in air) - - 1 methane 9.552 510.8 2.2036 1.6853 1.3075 1.00042 5.0 15.0 2 ethane 16.715 489.4 1.7054 1.4289 4.0050 1.1935 1.00072 2.9 13.0 +0.05 +1.6 3 propane 23.879 425.6 1.6191 1.4305 2.5840 1.1318 1.00103 2.0 9.5 97.1 +1.8 4 isobutane 31.043 365.1 1.6162 1.4731 2.3586 1.0971 1.00123 1.8 8.5 97.6 +0.1 5 n-butane 31.043 385.7 1.6511 1.5080 2.3805 1.0949 1.00133 1.5 9.0 89.6 93.8 6 isopentane 38.206 343.3 1.6003 1.4851 2.2208 1.0776 1.35669 1.3 8.0 90.3 92.3 7 n-pentane 38.206 357.6 1.6216 1.5064 2.2698 1.0765 1.36010 1.4 8.3 62.6 61.7 8 n-hexane 45.370 334.9 1.6125 1.5160 2.2104 1.0636 1.37698 1.1 7.7 26 24.8 9 n-heptane 52.534 316.9 1.6057 1.5227 2.2038 1.0545 1.39024 1.0 7.0 10 n-octane 59.697 302.2 1.6008 1.5280 2.1918 1.0476 1.39987 0.8 6.5 11 n-nonane 66.861 288.6 1.5967 1.5319 2.1719 1.0423 1.40742 0.7 5.6 12 n-decane 74.025 276.4 1.5938 1.5354 2.1562 1.0381 1.41409 0.7 5.4 13 ethylene 14.327 482.4 1.4941 1.1977 1.2475 2.9 32.0 75.6 +0.03 14 propylene 21.491 439.0 1.4937 1.2961 2.5227 1.1525 1.31657 2.1 11.1 84.9 +0.2 15 carbon dioxide 573.3 0.8334 0.6445 2.8376 1.2931 1.22994 16 hydrogen sulfide 7.164 546.4 0.9976 0.7536 2.1277 1.3237 4.3 45.5 17 nitrogen 199.2 1.0395 0.7427 1.3996 18 oxygen 213.1 0.9166 0.6568 1.3956 19 helium 20.564 5.1932 3.1159 1.6667 20 water 2256.5 1.8620 1.4005 4.1888 1.3295 1.33424 21 hydrogen 2.388 448.7 14.2647 10.1402 1.4067 4 74.2 22 carbon monoxide 2.388 214.7 1.0400 0.7432 1.3994 12.5 74.2 23 hydrogen chloride 443.5 0.7989 0.5708 2.1933 1.3995 24 carbonyl sulfide 7.164 308.9 0.6827 0.5443 1.3058 1.2543 1.36272 25 chlorine 282.6 0.4764 0.3591 0.9724 1.3265 26 ammonia 3.582 1369. 2.0792 1.5910 4.6819 1.3069 15.5 27 27 sulfur dioxide 389.1 0.6167 0.4869 1.3792 1.2665 28 methanol 7.164 1101. 1.3547 1.0952 2.4761 1.2369 1.33060 5.5 44 29 ethanol 14.327 849.6 1.3824 1.2019 2.3590 1.1502 1.36351 3.28 19 30 ethyne 11.939 1.6601 1.3408 5.2962 1.2382 1.5 100 31 1,2-propadiene 19.103 509.6 1.4407 1.2331 2.5345 1.1683 1.37842 32 1-propyne 19.103 1.4824 1.2749 2.2112 1.1628 1.34762 33 1,3-butadiene 26.267 414.3 1.4283 1.2745 2.2331 1.1206 1.40267 2 12.5 34 1,2-butadiene 26.267 442.8 1.4364 1.2827 2.2561 1.1198 1.62 10.3

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Page 54: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 50

Notes j b,k b,m n 4 5,o Volume of Air

Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper Motor

Method D-357

Research Method D-908

101.325 kPa 15 °C 15 °C

310.93 K, 101.325 kPa

Compound - kJ/kg kJ/(kg-K) - - (volume % in air) - - 35 2-methylpropene 28.655 391.6 1.5438 1.3957 2.3181 1.1062 1.35385 1.6 10 36 1-butene 28.655 392.2 1.4780 1.3298 2.2523 1.1114 1.35426 1.6 10 80.8 97.4 37 (E)-2-butene 28.655 405.2 1.5222 1.3740 2.2773 1.1079 1.35912 1.6 10 38 (Z)-2-butene 28.655 414.2 1.4019 1.2538 2.1980 1.1182 1.36886 1.6 10 83.5 100 39 2-methyl-1,3-butadiene 33.430 378.5 1.4675 1.3454 2.1702 1.0907 1.42517 1.12 8.5 81 99.1 40 3-methyl-1-butene 35.818 342.7 1.5921 1.4735 2.1808 1.0805 41 1-pentene 35.818 357.6 1.5019 1.3834 2.1707 1.0857 1.36054 1.3 10 77.1 90.9 42 2-methyl-1-butene 35.818 363.6 1.5280 1.4095 2.2029 1.0841 43 (E)-2-pentene 35.818 371.9 1.5143 1.3958 2.1970 1.0849 44 (Z)-2-pentene 35.818 373.0 1.3697 1.2512 2.1230 1.0948 45 2-methyl-2-butene 35.818 375.1 1.4582 1.3397 2.1397 1.0885 1.39045 46 cyclopentane 35.818 389.3 1.1419 1.0234 1.7626 1.1158 1.40921 1.5 8.3 84.9 +0.1 47 2,2-dimethylpropane 38.206 315.7 1.6239 1.5086 2.2469 1.0764 1.3 7.5 80.2 85.5 48 benzene 35.818 393.7 1.0029 0.8965 1.7075 1.1187 1.50417 1.2 8 +2.8 49 methylcyclopentane 42.982 345.5 1.2542 1.1554 1.8441 1.0855 1.41237 1 8.4 80 91.3 50 cyclohexane 42.982 356.4 1.2106 1.1118 1.8123 1.0889 1.42899 1.2 8.4 77.2 83 51 2,2-dimethylbutane 45.370 305.8 1.5931 1.4967 2.1529 1.0645 1.37172 1.2 7 93.4 91.8 52 2,3-dimethylbutane 45.370 315.4 1.5659 1.4694 2.1462 1.0657 1.37762 1.2 7 94.3 +0.3 53 2-methylpentane 45.370 323.1 1.6021 1.5056 2.1879 1.0641 1.37434 1.2 7 73.5 73.4 54 3-methylpentane 45.370 325.3 1.5774 1.4809 2.1701 1.0652 1.37924 1.2 7.7 74.3 74.5 55 toluene 42.982 360.7 1.0872 0.9969 1.6700 1.0905 1.49950 1.2 7.1 +0.3 +5.8 56 1,1-dimethylcyclopentane 50.146 308.3 1.3135 1.2288 1.8615 1.0689 1.41612 1.2 7.4 89.3 92.3 57 trans-1,3-dimethylcyclopentane 50.146 310.3 1.3257 1.2410 1.8633 1.0682 1.41259 1.2 7.4 72.6 80.6 58 cis-1,3-dimethylcyclopentane 50.146 309.6 1.3251 1.2404 1.8775 1.0683 1.41173 1.2 7.4 73.1 79.2 59 trans-1,2-dimethylcyclopentane 50.146 311.4 1.3262 1.2415 1.8836 1.0682 1.41437 1.2 7.4 60 cis-1,2-dimethylcyclopentane 50.146 319.3 1.3223 1.2376 1.8830 1.0684 1.42463 1.1 7.2 61 methylcyclohexane 50.146 318.1 1.3352 1.2505 1.8429 1.0677 1.42556 1.1 6.7 71.1 74.8 62 ethylcyclopentane 50.146 324.0 1.3177 1.2331 1.8533 1.0687 1.42227 1.1 6.7 61.2 67.2 63 cycloheptane 50.146 338.7 1.2949 1.2103 1.8005 1.0700 1 6.8 40.2 38.8 64 2,2-dimethylpentane 52.534 290.9 1.6128 1.5298 2.1604 1.0542 1.38480 1.1 6.8 95.6 92.8 65 2,4-dimethylpentane 52.534 295.8 1.6515 1.5685 2.1915 1.0529 1.38466 1.1 6.7 83.8 83.1 66 2,2,3-trimethylbutane 52.534 287.4 1.5783 1.4953 2.0867 1.0555 1.39199 1 7 +0.1 +1.8 67 3,3-dimethylpentane 52.534 295.3 1.6031 1.5201 2.1000 1.0546 1.39355 1 6.7 86.6 80.8 68 2,3-dimethylpentane 52.534 303.1 1.5515 1.4685 2.1348 1.0565 1.39449 1.1 6.8 88.5 91.1 69 2-methylhexane 52.534 306.0 1.5937 1.5107 2.1817 1.0549 1.38766 1 7 46.4 42.4

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Page 55: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 51

Notes j b,k b,m n 4 5,o Volume of Air

Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper Motor

Method D-357

Research Method D-908

101.325 kPa 15 °C 15 °C

310.93 K, 101.325 kPa

Compound - kJ/kg kJ/(kg-K) - - (volume % in air) - - 70 3-methylhexane 52.534 308.2 1.5835 1.5005 2.1421 1.0553 1.39126 1 6.6 55.8 52 71 3-ethylpentane 52.534 309.3 1.6118 1.5288 2.1500 1.0543 1.39599 1 6.5 69.3 65 72 styrene 47.758 351.7 1.1157 1.0359 1.7129 1.0771 1.54923 1.1 8 +0.2 +3 73 ethylbenzene 50.146 335.3 1.1617 1.0834 1.7147 1.0723 1.49826 1 6.8 97.9 +0.8 74 p-xylene 50.146 336.4 1.1495 1.0712 1.6846 1.0731 1.49829 1.1 7 +1.2 +3.4 75 m-xylene 50.146 340.1 1.1421 1.0638 1.6802 1.0736 1.49960 1 7 +2.8 +4 76 o-xylene 50.146 342.7 1.2007 1.1224 1.7356 1.0698 1.50765 1 7 100 77 1,1,3-trimethylcyclopentane 57.309 278.8 1.3828 1.3087 1.8722 1.0566 1.41356 1.1 7.1 83.5 87.7 78 1,trans-2,cis-4-trimethylcyclopentane 57.309 283.9 1.3796 1.3055 1.9052 1.0568 1.41297 0.9 6.6 79 r-1,t-2,c-3-trimethylcyclopentane 57.309 283.2 1.3796 1.3055 1.8798 1.0568 0.9 6.6 80 1,1,2-trimethylcyclopentane 57.309 286.8 1.3828 1.3087 1.8791 1.0566 1.42523 1 6.9 81 1,cis-2,trans-4-trimethylcyclopentane 57.309 288.9 1.3796 1.3055 1.8953 1.0568 1.42092 1 6.9 79.5 89.2 82 r-1,c-2,t-3-trimethylcyclopentane 57.309 290.1 1.3796 1.3055 1.9057 1.0568 0.9 6.6 83 trans-1,4-dimethylcyclohexane 57.309 289.9 1.3290 1.2549 1.8328 1.0590 1 6.8 62.2 68.3 84 1,1-dimethylcyclohexane 57.309 289.6 1.3656 1.2915 1.8219 1.0574 1.43149 1 6.8 85.9 87.3 85 trans-1,3-dimethylcyclohexane 57.309 292.5 1.3221 1.2480 1.8540 1.0594 1 6.7 64.2 66.9 86 trans-1-ethyl-3-methylcyclopentane 57.309 291.7 1.3773 1.3032 1.8878 1.0569 0.9 6.5 59.8 57.6 87 cis-1-ethyl-3-methylcyclopentane 57.309 291.8 1.3773 1.3032 1.8861 1.0569 0.9 6.5 59.8 57.6 88 trans-1-ethyl-2-methylcyclopentane 57.309 289.3 1.3773 1.3032 1.8699 1.0569 1.43898 0.9 6.6 89 1-ethyl-1-methylcyclopentane 57.309 295.9 1.3629 1.2888 1.8771 1.0575 1.42951 1 6.8 90 1,cis-2,cis-3-trimethylcyclopentane 57.309 291.9 1.3796 1.3055 1.8997 1.0568 1.42103 0.9 6.6 91 cis-1,4-dimethylcyclohexane 57.309 296.6 1.3260 1.2519 1.8486 1.0592 1 6.7 68.2 67.2 92 cis-1,3-dimethylcyclohexane 57.309 293.9 1.3238 1.2497 1.8243 1.0593 1 6.8 71 71.7 93 isopropylcyclopentane 57.309 300.1 1.3658 1.2917 1.8657 1.0574 1.42814 0.9 6.7 76.2 81.1 94 cis-1-ethyl-2-methylcyclopentane 57.309 303.4 1.3773 1.3032 1.9061 1.0569 1.42938 0.9 6.7 95 cis-1,2-dimethylcyclohexane 57.309 300.9 1.3038 1.2297 1.8324 1.0603 1.43827 0.9 6.6 78.6 80.9 96 propylcyclopentane 57.309 308.2 1.3792 1.3051 1.8858 1.0568 1.42874 0.9 6.6 28.1 31.2 97 ethylcyclohexane 57.309 305.1 1.4140 1.3399 1.8469 1.0553 1.43527 0.9 6.6 40.8 46.5 98 cyclooctane 57.309 322.6 1.2560 1.1819 1.8810 1.0627 1.46031 0.8 6.2 58.2 71 99 2,2,4-trimethylpentane 59.697 268.1 1.5698 1.4970 2.0472 1.0486 1.39388 1 6 100 100 100 2,2-dimethylhexane 59.697 277.9 1.5989 1.5261 2.1438 1.0477 0.9 6.3 77.4 72.5 101 2,5-dimethylhexane 59.697 280.7 1.5728 1.5000 2.1392 1.0485 1.39489 0.9 6.3 55.7 55.5 102 2,4-dimethylhexane 59.697 274.8 1.6314 1.5586 2.1880 1.0467 0.9 6.3 69.9 65.2 103 2,2,3-trimethylpentane 59.697 284.7 1.5707 1.4979 2.0763 1.0486 1.40530 0.9 6.3 99.9 +1.2 104 3,3-dimethylhexane 59.697 284.2 1.6173 1.5445 2.1141 1.0471 0.9 6.2 83.4 75.5

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Page 56: Table of Physical Properties for Hydrocarbons and …GPA 2145 Page 1 PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1,

PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 52

Notes j b,k b,m n 4 5,o Volume of Air

Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper Motor

Method D-357

Research Method D-908

101.325 kPa 15 °C 15 °C

310.93 K, 101.325 kPa

Compound - kJ/kg kJ/(kg-K) - - (volume % in air) - - 105 2,3,4-trimethylpentane 59.697 283.5 1.6233 1.5505 2.1267 1.0469 1.40650 0.9 6.2 95.9 +0.2 106 2,3-dimethylhexane 59.697 291.1 1.5591 1.4863 2.1222 1.0490 1.40378 0.9 6.2 78.9 71.3 107 2-methylheptane 59.697 295.6 1.5915 1.5188 2.1661 1.0479 1.39762 1 6.1 23 20.6 108 4-methylheptane 59.697 291.5 1.5878 1.5150 2.1558 1.0480 1.40077 0.9 6.1 39 26.7 109 3,4-dimethylhexane 59.697 292.6 1.5420 1.4692 2.0985 1.0495 1.40669 0.9 6.1 81.7 76.3 110 3-ethylhexane 59.697 295.7 1.6143 1.5415 2.1950 1.0472 1.40425 0.9 6.1 52.4 33.5 111 3-methylheptane 59.697 296.7 1.5787 1.5059 2.1517 1.0483 1.40084 0.9 6.1 35 26.8 112 isopropylbenzene 57.309 306.7 1.2843 1.2151 1.7582 1.0569 1.49368 0.9 6.5 99.3 +2.1 113 propylbenzene 57.309 313.1 1.2289 1.1597 1.7547 1.0596 1.49435 0.8 6 98.7 +1.5 114 m-ethyltoluene 57.309 316.8 1.1937 1.1246 1.7739 1.0615 1.49899 0.9 6.2 100 +1.8 115 p-ethyltoluene 57.309 315.5 1.1957 1.1266 1.7836 1.0614 1.49738 0.9 6.2 97 116 1,3,5-trimethylbenzene 57.309 322.1 1.1926 1.1234 1.7080 1.0616 1.50165 0.9 6.1 +0.6 +6 117 o-ethyltoluene 57.309 319.9 1.2504 1.1812 1.8302 1.0586 1.50585 0.9 6.2 92.1 +0.2 118 1,2,4-trimethylbenzene 57.309 323.6 1.2088 1.1396 1.7562 1.0607 1.50720 0.9 6.4 +0.6 +1.4 119 1,2,3-trimethylbenzene 57.309 330.4 1.2502 1.1810 1.7716 1.0586 1.51587 0.9 6.4 +0.1 +0.5 120 1,1,4-trimethylcyclohexane 64.473 263.2 1.3882 1.3223 1.8406 1.0498 0.8 6.5 121 1,1,3-trimethylcyclohexane 64.473 269.3 1.3882 1.3223 1.8585 1.0498 1.43232 0.9 6.5 82.6 81.3 122 r-1,c-3,c-5-trimethylcyclohexane 64.473 276.4 1.3792 1.3133 1.9042 1.0502 0.9 6.5 56.4 59.1 123 r-1,c-3,t-5-trimethylcyclohexane 64.473 275.0 1.3757 1.3099 1.8847 1.0503 0.9 6.5 70.1 68.5 124 trans,trans-1,2,4-trimethylcyclohexane 64.473 268.4 1.3854 1.3195 1.8545 1.0499 0.8 6.5 125 cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane 64.473 278.2 1.3854 1.3195 1.9112 1.0499 0.8 6.5 126 r-1,t-2,c-3-trimethylcyclohexane 64.473 273.7 1.3854 1.3195 1.8829 1.0499 0.9 6.5 81 83.4 127 r-1,t-2,t-4-trimethylcyclohexane 64.473 277.0 1.3854 1.3195 1.9001 1.0499 0.9 6.5 74.3 72.9 128 cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane 64.473 278.3 1.3854 1.3195 1.9052 1.0499 0.8 6.5 129 1,1,2-trimethylcyclohexane 64.473 270.6 1.3882 1.3223 1.8412 1.0498 0.8 6.5 82.6 81.3 130 isobutylcyclopentane 64.473 279.6 1.3928 1.3269 1.8932 1.0496 1.43112 0.8 5.9 28.2 33.4 131 cis,cis-1,2,3-trimethylcyclohexane 64.473 279.0 1.3854 1.3195 1.8974 1.0499 0.9 6.5 132 cis-1,2,trans-1,3-cyclohexane 64.473 282.3 1.3854 1.3195 1.9109 1.0499 0.9 6.5 82.5 86.2 133 isopropylcyclohexane 64.473 289.1 1.3731 1.3073 1.8790 1.0504 1.44311 0.8 6.2 61.1 62.8 134 butylcyclopentane 64.473 294.3 1.4258 1.3599 1.9036 1.0484 1.43386 0.8 6.1 135 propylcyclohexane 64.473 289.8 1.4167 1.3508 1.9238 1.0488 1.43924 0.8 6.1 14 17.8 136 methylcyclooctane 64.473 286.2 1.3419 1.2760 1.8056 1.0516 0.8 6 137 2,2,4,4-tetramethylpentane 66.861 253.4 1.6260 1.5611 2.0313 1.0415 1.40921 0.9 5 138 2,2,5-trimethylhexane 66.861 260.7 1.5689 1.5040 2.0869 1.0431 1.40208 0.8 6 139 2,2,4-trimethylhexane 66.861 259.4 1.5778 1.5129 2.0656 1.0428 0.8 6

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 53

Notes j b,k b,m n 4 5,o Volume of Air

Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper Motor

Method D-357

Research Method D-908

101.325 kPa 15 °C 15 °C

310.93 K, 101.325 kPa

Compound - kJ/kg kJ/(kg-K) - - (volume % in air) - - 140 2,4,4-trimethylhexane 66.861 260.2 1.6059 1.5411 2.0733 1.0421 1.40950 0.8 6 141 2,3,5-trimethylhexane 66.861 263.3 1.5907 1.5259 2.1034 1.0425 0.8 5.9 142 2,4-dimethylheptane 66.861 267.1 1.6287 1.5639 2.1767 1.0415 0.8 5.7 143 2,2-dimethylheptane 66.861 268.7 1.6006 1.5357 2.1469 1.0422 0.8 5.9 60.5 50.3 144 2,2,3-trimethylhexane 66.861 265.8 1.5693 1.5044 2.0852 1.0431 0.8 6 145 2,6-dimethylheptane 66.861 269.8 1.5845 1.5197 2.1425 1.0427 1.40397 0.8 5.7 146 2,5-dimethylheptane 66.861 268.5 1.5631 1.4983 2.1095 1.0433 0.8 5.7 147 3,5-dimethylheptane 66.861 269.7 1.6132 1.5484 2.1614 1.0419 0.8 5.7 148 3,3-dimethylheptane 66.861 265.6 1.6146 1.5498 2.1319 1.0418 0.8 5.8 149 2,3,3-trimethylhexane 66.861 270.2 1.5988 1.5339 2.1246 1.0423 0.8 5.8 150 2,3,4-trimethylhexane 66.861 266.5 1.6087 1.5439 2.1059 1.0420 0.8 5.8 151 2,2,3,3-tetramethylpentane 66.861 267.5 1.5979 1.5331 2.0718 1.0423 1.42567 0.8 4.9 95 +3.6 152 3,4-dimethylheptane 66.861 276.2 1.5480 1.4832 2.1124 1.0437 0.8 5.7 153 2,3-dimethylheptane 66.861 277.0 1.5607 1.4959 2.1300 1.0433 0.7 5.5 154 4-methyloctane 66.861 291.1 1.5798 1.5150 2.2653 1.0428 0.8 5.7 155 2-methyloctane 66.861 283.7 1.5862 1.5214 2.2032 1.0426 0.8 5.7 156 3-methyloctane 66.861 277.3 1.5826 1.5178 2.1508 1.0427 0.8 5.8 157 naphthalene 57.309 337.5 0.9908 0.9259 1.4962 1.0701 0.9 5.9 158 tert-butylbenzene 64.473 284.8 1.2891 1.2272 1.7659 1.0505 1.49491 0.8 5.7 +0.8 +3 159 isobutylbenzene 64.473 289.1 1.2863 1.2243 1.7724 1.0506 1.48888 0.8 6 98 +1.6 160 sec-butylbenzene 64.473 287.4 1.2863 1.2243 1.7777 1.0506 1.49230 0.8 6.9 95.7 +0.7 161 1-methyl-3-isopropylbenzene 64.473 292.3 1.2949 1.2330 1.8360 1.0502 0.8 5.6 162 1-methyl-4-isopropylbenzene 64.473 291.7 1.2949 1.2330 1.7383 1.0502 1.49235 0.8 5.6 97.7 +1.4 163 1-methyl-2-isopropylbenzene 64.473 290.0 1.2949 1.2330 1.8263 1.0502 0.8 5.2 96 +0.6 164 1,3-diethylbenzene 64.473 297.4 1.2792 1.2173 1.8516 1.0509 1.49776 0.8 5.9 97 +3 165 1-methyl-3-propylbenzene 64.473 279.7 1.3026 1.2406 1.8267 1.0499 0.8 5.4 +1.8 166 butylbenzene 64.473 297.9 1.2557 1.1937 1.7765 1.0519 1.48874 0.8 5.8 94.5 +0.4 167 1-methyl-4-propylbenzene 64.473 290.9 1.3026 1.2406 1.8526 1.0499 0.8 5.4 168 1,2-diethylbenzene 64.473 297.8 1.3222 1.2603 1.8894 1.0492 1.50566 0.8 5.9 169 1,4-diethylbenzene 64.473 297.9 1.2747 1.2127 1.8519 1.0511 1.49704 0.8 5.8 95.2 +0.6 170 1-methyl-2-propylbenzene 64.473 285.8 1.3026 1.2406 1.8371 1.0499 0.8 5.5 92.2 +0.3 171 1,4-dimethyl-2-ethylbenzene 64.473 300.8 1.3112 1.2492 1.8991 1.0496 0.8 6.1 96 +0.6 172 1,2-dimethyl-4-ethylbenzene 64.473 306.2 1.3112 1.2492 1.9100 1.0496 0.8 6.1 173 1,3-dimethyl-2-ethylbenzene 64.473 302.9 1.3112 1.2492 1.8787 1.0496 0.8 6.1 174 1,2-dimethyl-3-ethylbenzene 64.473 306.1 1.3112 1.2492 1.8897 1.0496 0.8 5.3 91.9 +0.4

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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017

GPA 2145 Page 54

Notes j b,k b,m n 4 5,o Volume of Air

Required to Burn One Vol. of Ideal

Gas

Heat of Vapor-ization

Specific Heat Refractive Index, nD

Flammability Limits

Octane Number

Cp, ideal gas

Cv, ideal gas

Cσ, sat. liquid k=Cp/Cv Lower Upper Motor

Method D-357

Research Method D-908

101.325 kPa 15 °C 15 °C

310.93 K, 101.325 kPa

Compound - kJ/kg kJ/(kg-K) - - (volume % in air) - - 175 1,2,4,5-tetramethylbenzene 64.473 313.1 1.3767 1.3148 1.9712 1.0471 0.7 5.5 176 1,2,3,5-tetramethylbenzene 64.473 315.1 1.3512 1.2892 1.7727 1.0481 0.7 5.6 +0.2 177 1,2,3,4-tetramethylbenzene 64.473 317.6 1.3775 1.3155 1.7883 1.0471 0.7 5.5 +0.1 +0.5 178 tert-butylcyclohexane 71.637 267.6 1.3994 1.3401 1.8420 1.0442 1.44903 0.7 5.9 179 butylcyclohexane 71.637 276.9 1.4481 1.3888 1.8914 1.0427 1.44296 0.7 5.7 180 cyclodecane 71.637 289.8 1.3313 1.2720 1.8008 1.0466 0.6 5.4 181 isobutylcyclohexane 71.637 1.3967 1.3374 1.8485 1.0443 1.44082 0.7 5.9 182 2,2-dimethyloctane 74.025 255.9 1.5943 1.5359 2.1407 1.0380 0.7 5.5 183 3,6-dimethyloctane 74.025 251.2 1.5519 1.4934 2.0479 1.0391 0.7 5.4 184 3,3-dimethyloctane 74.025 253.9 1.6064 1.5479 2.1191 1.0378 0.7 5.5 185 2,3-dimethyloctane 74.025 265.2 1.5585 1.5001 2.1239 1.0390 0.7 5.4 186 5-methylnonane 74.025 274.4 1.5775 1.5191 2.1905 1.0385 0.7 5.4 187 3-ethyloctane 74.025 259.6 1.6029 1.5445 2.1344 1.0378 0.7 5.4 188 4-methylnonane 74.025 287.6 1.5818 1.5234 2.2551 1.0384 0.7 5.4 189 2-methylnonane 74.025 278.5 1.5858 1.5273 2.2356 1.0383 0.7 5.4 190 3-methylnonane 74.025 264.7 1.5766 1.5182 2.1449 1.0385 0.7 5.4 191 (2-methylbutyl)benzene 71.637 276.6 1.3168 1.2607 1.8537 1.0445 0.7 5.1 192 1-tert-butyl-2-methylbenzene 71.637 264.0 1.3272 1.2711 1.7800 1.0441 0.7 5.1 193 pentylbenzene 71.637 283.7 1.2850 1.2289 1.8554 1.0456 1.49167 0.7 5.1 194 n-undecane 81.188 265.0 1.5926 1.5394 2.1832 1.0346 1.41946 0.6 5 195 1-tert-butyl-3,5-dimethylbenzene 78.800 264.7 1.3586 1.3074 1.6536 1.0392 0.6 5 196 1,3,5-triethylbenzene 78.800 271.8 1.3440 1.2928 1.8351 1.0396 1.50257 0.6 5 197 1,2,4-triethylbenzene 78.800 265.1 1.3626 1.3114 1.9163 1.0391 0.6 5 198 hexylbenzene 78.800 269.6 1.3096 1.2583 1.8358 1.0407 0.7 5 199 n-dodecane 88.352 256.2 1.5895 1.5407 2.1809 1.0317 1.42384 0.5 4.8 200 n-tridecane 95.516 243.4 1.5883 1.5432 2.1835 1.0292 1.42404 0.4 4.5 201 n-tetradecane 102.679 248.4 1.5855 1.5436 2.1861 1.0272 1.43076 0.5 4.3 202 n-pentadecane 109.843 226.6 1.5860 1.5468 2.1873 1.0253 1.43476 0.4 4.1 203 n-hexadecane 117.007 216.0 1.5859 1.5492 2.1926 1.0237 1.43646

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GPA 2145 Page 55

NOTES FOR GPA MIDSTREAM STANDARD 2145-16 In the tables with fluids listed in rows (as done in TP-17), the first 22 fluids are the standard compounds given in the first set of tables. These are followed by the non-hydrocarbon compounds sorted by boiling-point temperature, and then by the hydrocarbons sorted first by molar mass and then by boiling point temperature.

All temperatures are based on the International Temperature Scale 1990 (ITS-90).

All properties except molar mass, flammability limits, and octane number were calculated from the REFPROP 9.1 program (reference 2) for the fluids listed below, or from the WTT program (reference 3). The fluids available in REFPROP include methane, ethane, propane, isobutane, butane, isopentane, pentane, hexane, heptane, octane, nonane, decane, undecane, dodecane, ethylene, propylene, carbon dioxide, hydrogen sulfide, nitrogen, oxygen, water, hydrogen, carbon monoxide, hydrogen chloride, carbonyl sulfide, ammonia, sulfur dioxide, methanol, ethanol, cyclopentane, benzene, cyclohexane, toluene, ethylbenzene, m-xylene, p-xylene, o-xylene, propylcyclohexane, 1-butene, (Z)-2-butene, (E)-2-butene, 2-methylpropene, 2-methylpentane, 2,2-dimethylpropane, and 2,2,4-trimethylpentane. The properties of helium were taken from the equation of state that was finalized after the release of REFPROP 9.1.

Shaded values were estimated by GPA Midstream for the hypothetical liquid state and were not re-evaluated.

Cells with no entry for the vapor pressure or a property in the liquid phase correspond to fluids where the referenced temperature is above the critical temperature. a The molar masses were calculated from the atomic weights given in Reference 1; these values

(g/mol) are: C = 12.0107, H = 1.00794, N = 14.0067, O = 15.9994, S = 32.065, He = 4.002602, Ar = 39.948, and Cl = 35.453. All molar masses in the tables are listed with 4 decimal places without consideration of their uncertainties past the third decimal point.

b For some compounds, values within this property group are for conditions different from those given in the heading.

c The triple point temperature is approximately the same as the melting point for most fluids. d For fluids with vapor pressures greater than 14.696 psia (101.325 kPa), the property is that of

the liquid state at saturation pressure. For nitrogen, oxygen, carbon monoxide, helium, hydrogen, and ethylene, the property is the value of the liquid at the normal boiling temperature.

e The temperature coefficient of density, in units of reciprocal temperature, is related to the expansion coefficient by

pp TV

VT

∂∂

−=

∂∂ 11 ρ

ρ

f The relative density of an ideal gas relative to a reference fluid (formerly that of air) has been calculated by dividing the molar mass of the gas by 28.9625 g/mol. The gas constant is R = 8.3144621 J mol–1 K–1 [10.7316 psia ft3/(lbmol °R) with 1 Btu = 1055.056 J].

g Gas states at 60 °F (15 °C in the SI tables)q and liquid states at the normal boiling point. The specific volume of an ideal gas has been calculated from the ideal gas equation (PV=RT). The volume ratio is V(ideal gas)/V(saturated liquid).

h The Pitzer acentric factor is given by ω = –log10 (Psat/Pc) – 1, with Psat at T = 0.7 Tc.

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GPA 2145 Page 56

i The heating value is the negative of the enthalpy of combustion at 60 °F (15 °C in the SI tables)q and 14.696 psia (101.325 kPa). The basis for gross heating values is these conditions for a dry gas based on an ideal reaction, see GPA-2172 for conversion to other bases. Conversion of enthalpies of combustion at T = 298.15 K, given in reference 3, were converted to the conditions specified here with the property values from reference 2. Heating values for H2S are based on SO2(g) and H2O as products. For gross heating values, the water formed by the reaction is liquid; for net heating values, the water formed by the reaction is an ideal gas. The liquid columns are for combustion of the fuel in the liquid state, the difference being the heat of vaporization at 60 °F q.

j Air required for the combustion of an ideal gas for compounds with the formula CnHmOhSjNk is Vair/Vgas = (n + m/4 – h/2 + j) / 0.20939 Values are based on an oxygen mole fraction of 0.20939 for air (see air section below).

k The heat of vaporization is the enthalpy of the saturated vapor at a boiling point of 14.696 psia (101.325 kPa)q minus the enthalpy of the saturated liquid at the same pressure. For carbon dioxide, the value represents the enthalpy of sublimation.

m The liquid value is not rigorously Cp, but rather it is Cσ, the heat capacity along the saturation curve, defined as:

σσ T

PTVTCC

pp ∂

∂∂

−=

When dealing with liquids far from the critical point (i.e., low temperatures), Cσ ≈ Cp. n The refractive index reported refers to the liquid or gas, and is measured with light with a

wavelength of 589.26 nm (corresponding to the sodium D-line). o Entries with a + sign and number specify the amount (in cm3) of TEL (tetraethyl lead) added

per gallon to achieve the ASTM octane number of 100, corresponding to that of 2,2,4-trimethylpentane.

p The summation factor is given with the symbol b. The dimensional summation factor can be used to approximate the compressibility factor with the equation Z = 1 – Pb2 with units of 1/psia0.5 or 1/kPa0.5 (which is the format used in the 2009 versions of GPA-2145 and 2172). The unitless summation factor can be used to approximate the compressibility factor with the equation Z = 1 – (P/P0)b2 with P0 set to 1 atm (14.696 psia or 101.325 kPa). The unitless summation is preferred.

q Vapor properties for tables in FPS units are generally calculated at 60 °F, whereas the properties in the SI tables are calculated at 15 °C. The two temperatures should not be assumed identical (60 °F = 15.5555… °C), and thus there will be slight differences between the two tables for the same properties. The pressures in both tables, however, are calculated at 1 atm (14.696 psia or 101.325 kPa).

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GPA 2145 Page 57

Thermophysical Properties of Dry Air The definition of relative density in the main tables was modified so that the values are based solely on a fixed reference value (28.9625 g/mol), and is no longer based on the molar mass of air, which changes from time to time as the mole fractions of the components in dry air are remeasured with lower uncertainties. The main tables now list pure fluids only; all properties for air were removed from the tables and are included here.

The most recently published molar mass of air is 28.96546 g/mol. The updated publication ISO 6976-16 – 'Natural gas – Calculation of calorific value, density, relative density and Wobbe index from composition' will also report this value. It is taken from the latest scientific publication on air from Picard et al. (reference 6). The information in the table below (taken from Table 1 of Picard et al.) should not be used for relative density calculations.

The properties in the second table were calculated with the REFPROP 9.1 program (reference 2).

Molar Mass of Dry Atmospheric Air (g/mol)

Component Mole Fraction (xi) Molar Mass (M) xi·M Nitrogen 0.780848 28.0134 21.874207 Oxygen 0.209390 31.9988 6.700229 Argon 0.009332 39.948 0.372795 Carbon dioxide 0.00040 44.0095 0.017604 Neon 18.2×10−6 20.1797 0.000367 Helium 5.2×10−6 4.0026 0.000021 Methane 1.5×10−6 16.0425 0.000024 Krypton 1.1×10−6 83.798 0.000092 Hydrogen 0.5×10−6 2.01588 0.000001 Nitrous oxide 0.3×10−6 44.0128 0.000013 Carbon monoxide 0.2×10−6 28.0101 0.000006 Xenon 0.1×10−6 131.293 0.000013 Molar mass of air (ΣxiM/Σxi)

28.96546

Properties of Dry Air SIa FPSb Molar mass 28.96546 g/mol 28.96546 lbm/lbmol Boiling temperaturec 78.903 K –317.64 °F Triple point temperature 59.75 K –352.12 °F Critical temperature 132.53 K –221.12 °F Critical pressure 3.7860 MPa 549.11 psia Critical density 342.68 kg/m3 21.393 lbm/ft3 Density of liquidc 875.21 kg/m3 54.637 lbm/ft3

7.3039 lbm/gal Volume of liquidc 0.0011426 m3/kg 0.13691 gal/lbm Density of ideal gas 1.2250 kg/m3 0.07633 lbm/ft3 Volume of ideal gas 0.81631 m3/kg 13.101 ft3/lbm Unitless summation factor 0.02066 0.02052 Acentric factor –0.0067 –0.0067 Cp (ideal gas) 1.0042 kJ/(kg K) 0.2399 Btu/(lbm °F) Cv (ideal gas) 0.7172 kJ/(kg K) 0.1713 Btu/(lbm °F) k (=Cp /Cv) 1.4002 1.4002 a SI values are given at 15 °C and 0.101325 MPa, except those at saturation. b FPS values are given at 60 °F and 14.696 psia, except those at saturation. c at the normal boiling point for the saturated liquid

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GPA 2145 Page 58

References

1. M.E. Wieser and M. Berglund, Pure Appl. Chem., 81:2131-2156, 2009.

2. E.W. Lemmon, M.L. Huber, and M.O. McLinden, NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 9.1, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, 2013. This database includes The IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use, J. Phys. Chem. Ref. Data, 31(2), 387-535, 2002.

3. K. Kroenlein, C.D. Muzny, A.F. Kazakov, V. Diky, R.D. Chirico, J.W. Magee, I. Abdulagatov, and M. Frenkel, NIST Web Thermo Tables (WTT), Lite Edition, NIST Standard Reference Subscription Database 202, http://www.nist.gov/srd/nistwebsub2.cfm.

4. Engineering Sciences Data Unit, Fire Hazard Properties: Flash Points, Flammability Limits and Autoignition Temperatures, ESDU 82030, September, 1983.

5. E.F. Obert, Internal Combustion Engines and Air Pollution, Harper and Row, New York, 1973.

6. A. Picard, R.S. Davis, M. Gläser, and K. Fujii, Revised Formula for the Density of Moist Air (CIPM-2007), Metrologia, 45:149-155, 2008.

Copyright Gas Processors Association Provided by IHS under license with GPA Licensee=Repsol Site 19-20/5982486004, User=Miller, Barb

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GPA 2145 Page 59

GPA Midstream Standard 2145 History

(Adoption and Revisions)

• 1942 – Adopted as a Standard • 1957 – Revised • 1962 – Revised • 1966 – Revised • 1971 – Revised • 1975 – Revised • 1977 – Revised • 1982 – Revised • 1983 – Revised • 1984 – Revised • 1985 – Revised • 1986 – Revised • 1988 – Revised • 1989 – Revised • 1990 – Revised • 1991 – Revised • 1992 – Revised • 1993 – Revised • 1994 – Revised • 1995 – Revised • 1996 – Revised • 1997 – Reaffirmed; No Changes • 1998 – Reaffirmed; No Changes • 2000 – Revised • 2003 – Revised • 2005 – Revised • 2007 – Revised • 2009 – Revised • 2016 – Revised

Copyright Gas Processors Association Provided by IHS under license with GPA Licensee=Repsol Site 19-20/5982486004, User=Miller, Barb

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Not for Resale, 06/20/2016 13:42:46 MDTNo reproduction or networking permitted without license from IHS

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