deScent®

Asphalt Odor Suppressant Additive

REDUCES HYDROGEN SULFIDE AND OTHER VOC EMISSIONS BY UP TO 90%

deScent is an asphalt odor suppressant that neutralizes odorous volatile organic compounds (VOCs) including dangerous hydrogen sulfide (H²S) gas emissions. It improves worker safety and air quality while eliminating odor complaints. deScent is a cost-effective odor suppressant, and it is easy to use and apply during asphalt storage or transfer. deScent alleviates pressure on asphalt manufacturing facilities by curtailing odor concerns of residents in nearby communities. For roofing contractors, it also eliminates the inconvenience of incurring additional costs to perform work during irregular hours or only seasonally due to public odor concerns.

TECHNICAL DATA SHEET

APPLICATIONS FEATURESELIMINATES ASPHALT ODOR

Scientifically proven to suppress up to 90% of odor causing VOCs

Scientifically proven to reduce dangerous hydrogen sulfide (H2S) gas emissions by up to 85%

Neutralizes odors rather than masking with another fragrance

DOES NOT IMPACT PERFORMANCE OF ASPHALTS

No effect on asphalt polymerization, penetration, softening point or dynamic shear rheometer (DSR) values

COMPATIBLE WITH POLYPHOSPHORIC ACID (PPA)

Unlike zinc-based H2S scavengers, will not adversely react with PPA-modified asphalt

STABLE IN ASPHALT

Remains effective in asphalt for weeks to months, depending on storage conditions

EASY TO USE

No heat required

USE DESCENT WHEN YOU NEED:

• To reduce H2S risks and create a safer working environment

• To eliminate asphalt odor and public complaints

• A PPA-friendly alternative to zinc-based scavengers

ASPHALT

Compatible with most roofing and paving grade asphalts including those modified with styrene-butadiene-styrene (SBS), styrene-butadiene rubber (SBR), ethylene-vinyl acetate (EVA) polymers, polyphosphoric acid (PPA), ground tire rubber (GTR) and recycled asphalt shingles (RAS)

COMPATIBILITY

6502 South Yale Avenue, Tulsa, OK 74136918-960-3800 | www.roadscience.net

• Asphalt Roofing• Asphalt Paving• Asphalt Marine and Rail

Transportation

USAGE RECOMMENDATIONS

The information contained herein is presented in good faith and believed to be accurate, however, ArrMaz Products, LP assumes no responsibility or liability for the information provided. ArrMaz Products, LP further makes no representations or warranties, either express or implied, of merchantability, fitness for a particular purpose or of any other nature with respect to the information or the product(s) to which the information refers.© 2018 ArrMaz Products, LP. All rights reserved. This material may not be reproduced, displayed, modified or distributed without the express prior written permission of the copyright holder.

To request additional product information, contact your regional Road Science representative. You can also contact us at918-960-3800 or customerservice@roadscience.net, or visit our website at www.roadscience.net.

Always handle deScent in accordance with Safety Data Sheet (SDS). Avoid product contamination with other materials. Do not store product in excess of 140 °F (60 °C) for prolonged periods. Recommended product handling temperature range is 40 – 140 °F (4 – 60 °C).

TECHNICAL SUPPORT

HANDLING AND STORAGE

PHYSICAL CHARACTERISTICS

deScent is available for shipment in bulk by tank truck. Packaged quantities are available in 275 gal/1,000 L IBC totes (2,150 lb/977.3 kg net weight) and 55 gal/208 L steel drums (430 lb/195.5 kg net weight).

AVAILABILITY

Property Description

Appearance, 77 °F (25 °C) Dark Colored Liquid

Odor Mild

Density, 77 °F (25 °C) 8.0 lb/gal

Viscosity, 77 °F (25 °C) 80 cP

TSCA Inventory Listed

DSL Inventory Listed

REACH Compliant

C.A.S. Number Proprietary

The density and viscosity data reported are typical and not specifications.Typical ranges for density and viscosity values are ± 2 and ± 20%.

PAVING GRADE ASPHALT:

• 0.01 – 0.02% by weight of asphalt

ROOFING GRADE ASPHALT:

• 0.01 – 0.04% by weight of asphalt

Usage rate should be determined by user. Optimal usage rate is when neither asphalt nor deScent odor is detected.

OPTIONS FOR ADDING DESCENT TO ASPHALT:

1. Add to asphalt storage tank and agitate mechanically or through pump circulation

2. Add by in-line injecting into the asphalt transfer lines

3. Manually add to transport tanker or rail car prior to being loaded with asphalt

lb/gal

Temperature (°F)

8.1

7.9

8.0

40 1101009080706050

7.8

cP

Temperature (°F)

600

400

40 1101009080706050

0

200

120

120

6502 South Yale Avenue, Tulsa, OK 74136918-960-3800 | www.roadscience.net