Download - Petro Bond foundry molding sand
For greaterprecisio77 use. .. PETRO BOND~
You get smoother finishes and closer tolerances in aluminum, magnesium, bronze, silicon bronze, manganesebronze, and brass castings when you use PETRO BONDbonding agent.
Why PETRO BOND?
• Foundrymen using PETRO BONDbonding agent are obtaining greaterprecision in their castings.
• PETRO BOND sands are reusableagain and again with only infrequentre-mulling and re-bonding, resulting ingreater profits.
• PETRO BOND is a formulated bondingagent, bonding sand with oil instead ofwater.
• Less gas is formed permIttIng use offiner sands with lower permeability.PETRO BOND gives a finer finish.
• PETRO BOND produces near die castquality casting with green sand practice.
• PETRO BOND is ideal for limited run orone-of-a-kind casting.
• Ideal for pattern shop use. You cancount on precision castings using ordinary foundry equipment when you usePETRO BOND.
COVER PHOTO courtesy of Tazewell Machine Works:2015 South Second Street; Pekin, Illinois 61554.
The History of PETRO BOND
Bentonite Corporation recognized the need for amethod of producing precision castings using equipment and skills found in green sand foundries. Diecasting requires high volumes and continuing markets.Water bonded sands just did not give the finish required.Using organophilic clay technology developed andpatented by Bentonite Corporation, PETRO BOND wasdeveloped in foundries, for foundries, by foundries.
The key to its success is the use of oil as the temperingagent instead of water. The excellent reducing atmosphere results in an exceptional finish. Additionally,water expands to 80 times its original volume whenturning to steam, while oil develops a much lower volume increase when vaporizing. This allows the use offine sands without the problems associated withreduced permeability.
In 1987, a second product, PETRO BOND~ II bondingagent, was introduced. PETRO BOND II does notrequire P-l Catalyst as a separate ingredient and develops more green strength in shorter mull cycles than theoriginal PETRO BOND. Both products are producedand inventoried for the individual foundry customerpreference.
What Is A PETRO BOND Sand?
A PETRO BOND sand consists of a mulled mixture ofsand, oil, PETRO BOND bonding agent, and a smallamount of P-l Catalyst'. PETRO BOND sand contains oilinstead of water and needs less, if any, venting. Theamount and type of oil used creates considerably lessgas than is created in ordinary water sands. This permitsthe use of much finer sands with lower permeabilitythan allowable with water sand molds. The result - precision castings using ordinary foundry equipment!
How It Benefits You!
1. PETRO BOND and PETRO BOND II are economical to use. Do not look at the price of PETROBOND per pound, look at the finishing cost of yourcastings. Finishing is one of your most expensivecost centers. If PETRO BOND reduces your finishingcosts and your scrap, it will be less expensive thanclays. Properly used, PETRO BOND will reduceyour cost per ton poured due to savings in finishingand scrap. Only moderate maintenance of heap orsystem sand is required.
'P-l Catalyst is not required for PETRO BOND II
2. No neu' equipment investment. If you mull sand,if you produce castings, you have everything youneed.
3. PETRO BOND sands are reusable. Dependingupon alloy poured and sand to metal ratio, onlymoderate maintenance of heap or system sand isrequired.
Catalyst
P-1 Catalyst speeds and enhances the development ofgreen strength in PETRO BOND sands. It is not requiredwhen PETRO BOND II is used.
SUitable, conventionally refined oils withoutinhibitors can be obtained from your local BentoniteCorporation distributor. Bentonite Corporation maintains a list of suitable oils available from your localoil company jobber. Qualifying suitable oils is a continuing process, and it is recommended that youconsult your Bentonite Corporation foundry productsdistributor for their recommendations on the oil mostsuitable for use in your foundry.
A 1)rpical Mix
In order to prepare a typical mix, add the follOWingmaterials in the sequence shown:
PETRO BOND Mixing Procedure
Mixing
PETRO BOND n Mixing Procedure
It is recommended that all ingredients be carefullyweighed.
PETRO BOND II
100 lb. dried silica sand5 lb. PETRO BOND II2 lb. PETRO BOND OilP-1 Catalyst not required
PETRO BOND
100 lb. dried silica sand5 lb. PETRO BOND2 lb. PETRO BOND Oil1 oz. P-1 Catalyst
1. Weigh 100 lb. sand and 5 lb. PETRO BOND into themuller. Mull dry for 30 seconds.
2. Add 2 lb. PETRO BOND Oil Cabout 2 pints) to themuller. Mull 3 minutes.
3. Add 1 oz. P-1 Catalyst. Mull 8 minutes, Sand is nowready to use.
1. Weigh 100 lb. sand and 5 lb. PETRO BOND II intothe muller. Mull dry for 30 seconds.
2. Add 2 lb. PETRO BOND Oil Cabout 2 pints) to themuller. Mull 6 minutes. Sand is now ready for use.
The sand mixture should be mixed in a sand muller.The time of mixing varies with the type of muller usedand can be determined by varying the mixing time untilthe desired strength is obtained. The mix can then bestored indefinitely and will be usable at any time without further treatment.
Selection of the right sand is very important. Manycommercial foundries have indicated this to be a primary source of trouble. The sand is reusable. Theonly sand loss on reuse is a small portion adhering tothe casting. The use of a dried premium quality silicaor olivine is advisable because trouble-free operationis assured.
The type and grade of sand has an important effectupon the physical properties and surface finish of thecasting. Silica sands with a clay content below .5%give very good results. Sand with a high natural claycontent produce less desirable results and should beavoided. The reason for this is the ability of the clayto absorb water, oil, and PETRO BOND and thenrelease it upon contact with the metal, preventing thedevelopment of optimum green strength.
Sand
Oil
Use of a finer grained silica or olivine sand promotesa smoother casting surface with greater detail. Agrain fineness number of 120 to 180 has been usedsuccessfully in research laboratories and commercialfoundries for casting aluminum and copper basealloys. Coarser sands should be used for casting higher melting temperature alloys and when producingrelatively heavy castings to prevent penetration.
How To Use PETRO BOND in PreparingA Mold
One of the most important ingredients in making agood PETRO BOND sand is the oil. Special petroleum oils are available for this purpose. Oilscontaining inhibitors, such as specialized industrialoils and lubricating oils, are not recommended asthey may interfere with the PETRO BOND reaction.
Figure I indicates that the green strength continuallyincreases with mulling time. Over 85% of the maximum green strength is achieved in 6 to 11 minutes ofmulling depending upon PETRO BOND or PETROBOND II usage (12.0 psi being considered maximum).
If this mix results in stronger sand than desired, it maybe cut with clean sand.
As the sand is used, it may become contaminated withcoarse particles of core sand. If this contamination proceeds to the point where the overall percentage of finesin the sand is noticeably reduced, it is advisable to addiron oxide during one of the re-mulling cycles. Suchadditions help restore the correct balance between finesand coarser sand. The usual procedure is to add the ironoxide at the rate of one to two pounds per 100 poundsof sand. This addition will also result in a tougher butdrier sand. It may then be necessary to add additionaloil to restore proper moldability.
General Instructions For Use
1. Since PETRO BOND sands arc completely reusable,it is advantageous to make the entire mold out ofPETRO BOND sand in order to eliminate contami
nation.
2. When PETRO BOND sand is used for the entiremold, after the casting has solidified and has beenshaken out, it is only necessary to aerate or riddlethe sand before reusing. The sand can be usedwithout re-mulling until the green strength has beenreduced sufficiently to cause scabbing, washing, orsand inclusions.
3. PETRO BOND sand may be used as a facing forgreen sand molds. When PETRO BOND sand isused as a facing, the burned sand readily mixeswith the green backing sand.
4. For both types of use, best finishes are obtainedwhen the mold hardness is 80 or higher.
5. Maintenance additions of PETRO BOND and oilmay be made to a sand system in the same mannerthat bentonite, sea coal, or a custom blend andwater would be added in a water-tempered system.This results in a very uniform system with uniformcasting quality.
Equipment
Patterns made of wood, plaster, aluminum. brass, steel,etc., can all be used, bearing in mind that the accuracyand finish of the casting produced can be no better thanthe pattern. Steel flasks are preferable in order to ramthe mold to the desired hardness. Flask pins should betight to eliminate mismatch on the parting line. A dryparting agent is recommended. Dry PETRO BOND powder may be used as a parting agent.
Results
The large and increasing number of foundries usingPETRO BOND molding sand successfully for castingmagnesium, aluminum, copper base, and other nonferrous alloys indicates PETRO BOND has extraordinaryperformance. It is ideal for producing all weights of castings. A 4,200 pound bronze propeller has been castsuccessfully. In casting with magnesium, the mix ismodified with the usual inhibitors. All familiar, nonferrous alloys have been cast in this mix without anylimitations as to casting weight.
The superior surface finish and detail obtained with thissand mix, in comparison to water base mixes, is due toabsence of water and use of a finer sand.
Reuse of PETRO BOND Sand
When a PETRO BOND sand mix is used, the color of themix darkens until it becomes blackened in appearance.When strength and molding characteristics become inadequate, it must be revitalized by adding and mixingPETRO BOND and PETRO BOND Oil. The quantity andfrequency of additions varies considerably depending onthe metal cast, the pouring temperature, the ratio of sandto metal, etc. It is good practice to discard all burnt sandadhering to the casting which will eventually dilute thebond. In some cases, virgin mixes should be added tothe system periodically to maintain good grain distribution. The virgin mix may be added as a facing or blended into the heap in order to ensure a constant blend ofold and new material. Periodic additions of PETROBOND and oil may be made with acceptable results.
One method to follow is to use the original mixturewithout binder additions or re-mulling, but aerating untilthe green strength has been reduced to a minimum level.At this stage, binder additions and mulling must beemployed. Addition of 1% PETRO BOND and 10/0 PETROBOND Oil is a good starting point. The ratio of oil toPETRO BOND used is slightly higher than that suggestedfor the original mix. The oil requirement increases slightly as the mixture is used because of the accumulation ofdead material which absorbs oil. The order of additionand the mulling time are half that of the original mix.
The above suggestions are illustrative since the amountand frequency of additions to the mix will vary and willbe governed by your own experience. For example,a batch of sand was successfully used for a period of 22months in a small foundry where no physical testingequipment was employed. This illustrates that intelligent use of the mix will keep the binding materialrequired for revitalizing to a minimum. In some cases,
little effort or attention is necessary to maintain a qualitysand system.
The increase in strength with mulling time, as shown fora virgin mix in Figure I, also applies for revitalized mix;therefore, the maximum economic mull time should beused.
The time to shake the casting out of the mold dependson the amount of metal and the pouring temperature.Foundries have reported that a better looking surface isobtained if the casting is allowed to cool as long as possible. Cooling time should be longer than with watersands and as long as practical. This allows oil to recondense in the sand, minimizing smoke and oilconsumption.
Trouble-Shooting
The following difficulties usually can be eliminated byusing the procedures described. If the trouble continues,carefully check all materials, equipment, and proceduresbeing used.
Low Green Strength
The minimum green strength of 8.5 psi should beobtained if the mix is adequately mulled.
1. Improper Mulling. The formula may be correctand the ingredients good, but the actual mullingachieved may be inadequate. The muller must beclean and dry to provide intensive mixing. Thewheels of the muller should be lowered to the panto provide the proper mulling action. Plows that aretoo worn will not provide proper mixing. If portablemulling equipment is being used, the mulling t.imemay need to be increased (above the time requiredfor mulling by heavier stationary equipment) inorder to get a mix of proper green strength.
2. PETRO BOND content too low. Check theamounts of materials being used in the mix. Makesure you have used the amounts and the ratio ofPETRO BOND to oil that are prescribed on the foregoing pages of the bulletin. Be sure the PETROBOND is uniformJy dry-mixed and the oil is addedslowly to avoid leakage.
3. Too much moisture in sand. Check the sand tomake certain that the moisture content is less than.25%.
4. Oil is not the proper type. Recheck the oil beingused to make certain that the oil is approved for useby Bentonite Corporation or your foundry distribu-
tor. If the finished mix has a glossy appearance, itusually indicates that the oil is probably not of theproper specifications.
Poor Finish Castings
1. Incorrect mold hardness. Check your mold hardness. Make sure that its hardness is 80 or better. Ifyou are using a very high green strength in yourmix, make certain that the mold is rammed properlyto give a minimum mold hardness of 80.
2. Wrong patting agent. Check the amount and typeof parting agent being used. Do not use a liquidparting agent with PETRO BOND. A dry partingagent is necessary if loose patterns are used, especially if they are wooden patterns that have beenshellacked. PETRO BOND may be used as a dryparting agent.
Turbulent Metal Flow or Lack of EffectiveChoke Feeding
To assure smooth metal flow and adequate filling of thecavity, it may be necessary to choke the flow of metal toeliminate turbulence. Most metals can be poured atlower temperatures due to absence of the chilling effectof water and the lower heat conductivity of the oil.
Cutting and Washing in Molds
1. Improper ramming of the mold. Make certainthat the mold is rammed hard. Check the ingatesand sprues to ensure they are properly cut. Ingatesand sprues should be smaller in the PETRO BONDmolds than in conventional sand molds.
2. Improper pouring ofmolds. PETRO BOND sandmolds can be poured at considerably lower temperatures. If the surface of the PETRO BOND mold isvery smooth, the flow of metal should be reducedor restricted. This can be accomplished by usingstrainer cores or by changing the gating system sothat the metal enters the mold without turbulence.
3. Low sand strength.
4. Improper oil selection.
Non-Uniform Reproduction of Pattern
1. Improper mold hardness. If it is found that thecope and drag surfaces of the casting are smoothbut the side walls are not, it is an indication thatthe mold has not been rammed hard enough. Themold hardness should be uniform on all the mold
surfaces. Cope and drag and match plate equipmentgive the best reproduction.
Out of Dimension Castings
1. Insufficient cooling time. When castings areremoved too soon, there is a tendency for the casting to warp because of non-uniform solidification.It is essential to leave the casting in the sand longenough to have it properly solidified.
Gas Problems - Blows, Cold Shuts, Etc.
1. Too much oil in the mix. When excessiveamounts of oil are used in PETRO BOND mixes, thesurface of the metal may show slight imperfections.To eliminate this condition, mull 2% iron oxide intothe mix to absorb the excess oil. Another method isto rebalance the formula by adding clean silica sandand PETRO BOND to bring the mix to the propergreen strength.
2. Too much P-1 Catalyst in the mix. When excessive amounts of P-1 Catalyst are used, a significantincrease of oil absorption is observed, resulting in a"dry" feel and texture to the sand. Oil is often addedto improve feel. Resist this temptation. Blows occurat oil contents over 10%. If you used more than 10ounces catalyst per bag (50 lb.) of PETRO BOND,you have used too much.
3. Permeability should be checked. Molds madewith PETRO BOND are poured at considerablylower permeability than molds made with waterbonded sand. There is, however, a minimum levelof permeability. This is particularly true when pouring high temperature alloys. The optimum must beestablished in order to give proper castings.
FIGURE I
PETRO BOND® AND PETRO BOND® IIGREEN STRENGTH VS. TIME
LB.lSQ. IN.12
11
10
9
8
7
6
5
4
3
2
o 5 10 15
..; .. , .~_ .. " .'-.
20 25
PETRO BOND
MULL TIME IN MINUTES
- PETRO BOND/P-l PETRO BOND II
FIGURE II
Average Properties of Mixes Containing5% PETRO BOND, 2% PETRO BOND OIL,
I oz. P-I Catalyst
MLxes were made with 100 lb. ofwashed and dried silica sand (GFN-140) in alaboratory muller: The mulling cycle consisted of dry mLxing Yz minute,adding oil and mixing 3 minutes, and adding P-I Catalyst and mixing8 minutes.
GREEN PROPERTIES
Compression Strength, psi 12Flowability 87Green Deformation, in./in 0.010 to 0.014Hardness of standard 2-inch AFS
Specimen, rammed three times 84
HOT PROPERTIES
Soaking Time, Minutes 2 4 6 12,
Temperature, OF Hot Strength, psi
1500 17 34 36 42
2000 23 33 42
2500 27 245
"A" Sintering temperature above 2700°FHot deformation at 2000°F,
soaked 4 minutes, in.lin 0.0278Shock load expansion at 1800°F, 1 psi load,
22.5 seconds, in.lin. . 0.0010Restrained load nil
® and ™ are registered trademarks of Bentonite CorporationCopyright © 1990, 1992 Bentonite Corporation
<@} PETRO BOND® Green Sand
Cn...d ay, Ni~l M'..... on 10I,V98 ,,09,,8 AMc,,'''SO''I' MSDS
SECTION I· ProdlKlldulitillc.llon
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(CAS'Ii803.w.7)(CAS' 130HS·9)
(CAS , 61 789·80-8)(CAS' 6i726-SO)
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Qu>ru (90 - 9J~1U1sIoNIII< (O-O.I~)
CAS' 141108·60-7CAS , 1446+46-1
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I SECTION V· H..ltII HUNd InfonNdon
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I Section II - Haurdous Ingredienu
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I Section V • Health Hazard Infonnadan
Skin ConU<<: WISh >kin thorooeNY wi~ IOOP.lId w.t.,. lAtndof cootomhut«J do~lnl.
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I Seetion VI • Rentlvhy DaUl
I Seellon X - Sped,l PrtatutlolU,_ Shlpplq ll~me: Not rqubl«J.LmeI: Nono """,I.....t.ldendflcotlon Number: Not .pplk..t>lo.H....do... 1"rre<llenlS' NOI.pplkobit'loco"": NOI.ppIk.bleR_porUbIllty Qu.ndfy' NOI .pplkoblt
I Seetion XI - Regul,tory Information
~ PI Catalyst
Crt..t<I !y, NIIcI H.><IUI 011 01/22/'19 .. 11,01 AMU'tfO'l" MSOS
I Section I • Produce IdentifiutionTrade Name: PI e.t.1yo1Gfnerk Desc:r1p.lon: I'ropy\etle U,1><","e CASII108·32·7
I Section II • Hnardous InpedienuHAURIAl OR COHPONENT
OSHA PEL - 100 ppm
FlMr!rNblllty: 1 ReXllvlty: 0
Me~·1.3·01omn-2·Qnco (90-IOO%)
HAZARDOUS DATA: H..lth, I
(R.I~"P b~d on NFPAj
I~~;;;;;:::;;;;;;;;:;;=:}S'"'~';~.;;"Jl~II[-::P~h~'~'~;'~·iJD~'~ij,;'=;;;:;:;:;;'=====BOiDne Polo.: 466 F (HIe) Heltlne Polnl, ·S6F (-illC)Spe<1flc Gravlly (H,Oj .. l): 1.20 VapOr Pr~"ur~ (nun He), 0.Ol@2OC(68F)V.pOr Denslly (Alr .. I): NA ~ubjIJlyln W.,er, ,. by w~irhl: [email protected] (Uncompacted): NA Evapor>llon Ra•• (Iucyl .-.c.y... l): NO,. Vol,tll by Volume: N""" pH: no< .pplkable...........nc Odor: ColorIoss liquid
I Section IV - Fire and Explosion Dau.
c.rtlno~oklly' Not on NTP, IARe. or OSHA Ilsu.m.... of Exposu" (Acut~): MOlerl.llls.n 1niw1l-Ey. conY(I: M.... ause Irrttltlon or red.......Skin ConlXt: E/fKU of denNI COIIl>Ct sll&h~ If .ny.Inh.lLaIIon, M.y UWl! lni!>lion 10~, lIro>l, >rid Illnp.lowdon, Anemi> In <loc>,.nd adm>e ch.Inees,~ strIou., 10 tho luna:>, liver, c..trolnlfSlh..l.ndreproduclive 0/'101"' 01 r~u.nd mI« It>~ bton obsefved In I.bomory ~nirnlJs.1ter~'"C~don 012.0 F>rnl po< kllolr;m of body wtilht po< d>y of propylene ul'bort>tt.FIRST AID PROCEDURESEy. Ct>nutI' Flush~ wlth w>l.. for.t IUSI IS mIJltil~. Hold bxk ~11ds dUMc """"nc. GETMEDICAL ATTENTION.
Flosh Polnl: 27S0F (PMCCl H,mmoble LImits: NAFire Exdnflllshin. H~La: Accordlnc to tIM: N.~I Fire PrOt«llnn A1I<l<l>tIon 1U1do, "'" w.,.. 'Il"Y,dry chmlical, f<Wl', or uJbon dioxh:". WI'" or f".", m.y ...,.. frothilli. Use w.ttr to cool fire expo«:dC\lIlI.l1nM.. If. Ie'" or ,plll h>s oollvoittd, list w.,er ."..... 10 dlsPftW tho v.porJ .nd to provide prOtKllonfor ptr'SODS >lttmptlna: to ,top tho Ie"'.Spe<I.. Flr~nehlln.P,oc~u.....: W... full prOlO<llvo "",Ipment Indudlrc ~I COII!>lned br~.thInc
:l$llIM"'IU'. Ktop COlI!>..... cool with w..er lI'..y.Unu,u" Fire .Dd ExplooJon H....'do: M.y~ off leak v.pan whnl burned.
I Section V • Healeh Hazard Information
Skin ConU<I: flu.h ."'.. of conuct with w.'er.Inresdon: NOM consldtR<llltCess.;oryIn"'lulon, If ave"""'" by ':lllOI", """""" 10 fresh 01,. If b,uthln;: Is dillkult, &h'e 0X)'iefI. If bre.thlnaIus 1I00""d, Jil'e on:1lldol mplmlon. GET MEDICAL ATTENTlON.
I Seetion VI - Reactivity DataSlablliry, Mne....11s sub"'.Corulilions 10 Avoid, Nono documenled.Haurdous DKoml'O'i,lon ',odu(u, SumIna nt>Y "''''_ urton dioxide. u,ton monoxide.Condillo... Conlrlbullna'o HUllrdous Po/ymem.llon, Nono
I Section VII - PrecoludolU for Sofe Hndllnt ,md UseSle", 10 bI: Tobn If Ho,ert.lls b1eaHd or Spined: Use.t>sor\ltrll """,,leo ond sweep up m..,• ..wu~na nomI.Il houlf'keopln;: procedum ond hold for dlsposill. M..' ......I" ~Ippery wlNon wet.Wosce Dlspcwl MOlhod, DlsjlOle of In ..::tord.lOle wllh ..II Feder.l, SUI., lnd Lo<:..1 "'IlUlnions.• ,,,,,,,ullo... 10 be Token In Hondllna ond Slorole: W.~ ~proprt.l", prolKtl"" .qulpmen' when"'ndllna. Close ConU1M' when not In use. Do not reuse tmPtY conul....... Misuse of emplll conul..... Unbe h>urdous. Emplll COl\t.lI"... un be h>urdous If used 10 "ore lo,k, I\iimnubl., or ,e><live m.lltrlillso"lInl or we/dina of tmPllI conui"... mllht uuse ftr., expIo<ion, or IOI<k fumes from mldu... Do nolpr......rI.l. or expose 10 open n.m. or hu!.
I Seedon VIII - Industrial Hyilen. Control MeasuresPERSONAL PROTECTIVE EQUIPMENTVen,l1ulon R~ul",menu, Use with ildequn. vendlollon.R..plr.(01)1 Prol""llon, NOIIl' ".ce<I.lry whfn ""ndlfd .., ...blen"empe,,,,um.E,- ProIKllon' Chemlul ronIes. Do not we.., COOUCl lenses.Glovu: Bury! rubber.OIMr: Eyew..h , ..lion, opron, l ......riliis.
I Secdon IX • Tronsporution InformadonPrec.oudolW}' SIlIlemenn: Avoid Proionred Intwollon.
Prec.luliolUSection X • SpecialNot "'IlUliited.
IProper Shlpplnalh_:l.1b1:I: Nono ,equlred.Idendnudon Humber' NOl.pplk..ble.HUllrdou, Inlll'edi.nu, NOl"PplbblePlaurdJ, NOI oppikilleR.po>IUbll1ly Q ...nllly, Not .pplbble
I Seellon XI • Retuluory InformUlon
eom""""nll pr~nt In thiI prodoct at a 10..1which C\l<Ild rt<IU.... rtp(lr1lni; UnMr~ ....lOur ort:e""mkal: NONE CAS':
Tolk Sul»t.onc.. <ontrol Act (TSCAlTho In~Honll oftll~ product ..... on tho TSCA Inwntory.
Section XII - SUt~ RIghi 10 KnowNA· Not Applk_ ND· Not DmrmIMd , - f'roprleW)'
Allinform...lon, r~n<Utions, _tklns ~In (oncmdnc our produ<tl are b.w'd upon ,all ondd.t.o belitved to be rtn_; howf , It Is tho ..." responsibility to dl:'.rmlot tho ",rely, ,o,delly, aOOlUit.obillly lor hi, own 1M of ,he product doocrlbod """'In. Shu tho lCIu" II$<' byo~ b hoyond OUroontrOI, no l\Iaran,tt••xpmsod or Impf",d, b mid. by kntOniur hrfomunce Mlner.b as to tho dlKll ofIUCh U>e, by <>thor, of tho product ..I.rn<t '0 ......In. Nor b tho Inf.,..",.lion ""..In to be <OI\\llII«lasobsoluurly «(Jr'JlPHour sin« ldd!'ioIullnr.,..",.tlon mlY be ............,. or dl:~rabl< whon p.RIetILB or ••",ptlonll(ondltklns or <iretln'IlYrlC" ..bl or bee..... of ",pllubl< ..... or ,;>lItmlM'nui "1\Ilotioo.
BENTONITE PERFORMANCE MINERALS410 StventHnch StrHI, Suite BOO
Denver, CO B0202JOJ·S71·B240 Tel.JOJ·571·B2BO Fu
~1 Ca>I)ot MSDII1lI.M.W 11: W)M.... M...,.... 0..- CoIor>do