Material Safety Data Sheet
MSDS Name
Uni-Weather Duct Sealer
Revision Date
January 1, 2013
Section 1: Chemical Product and Company Identification
Product Name
Uni-Weather Duct Sealer
CAS Number
none
HMIS Hazard Rating
Health: 2, Fire: 3, Reactivity: 0
Company
Identification
McGill AirSeal LLC
2400 Fairwood Avenue
Columbus, Ohio 43207
Contact
McGill AirSeal LLC
Telephone
(800)624-5535, (614)829-1200
Fax
(614)829-1488
Chemtrec
(24-hour)
(800)424-9300
Chemtrec
International
(703)527-3887
Product Class
solvent mastic
Product Use
duct sealer
Product Code
5911, 5916
Section 2: Composition and Information about Ingredients
Hazardous Ingredients
CAS Number
Percent
hexane
110-54-3
20.66
toluene
108-88-3
4.72
OSHA PELs and ACGIH TL Vs are listed in Section 8 where applicable.
Section 3: Hazard Identification
Note
Repeated and prolonged overexposure to the mixture of solvent(s) listed in Section 2 can result in systemic effects including permanent brain, nervous system, liver, and kidney damage. Intentional misuse by deliberately concentrating and inhaling the contents may be harmful or fatal.
Emergency
Overview
Product is gray, medium viscosity mastic with a strong solvent odor.
DANGER: EXTREMELY FLAMMABLE, VAPOR HARMFUL. CONTAINS TOLUENE AND HEXANE. Vapors can cause flash fire. Vapors may ignite explosively. Prevent buildup of vapors by opening all windows and doors to create cross-ventilation. Keep away from heat, sparks, and open flame. Do not smoke. Extinguish all flames and pilot lights. Turn off stoves, heaters, and sparking electric motors. Keep away from all sources of ignition until all vapors are gone. Keep container tightly closed when not in use. Avoid prolonged breathing of vapor. KEEP OUT OF THE REACH OF CHILDREN.
Routes of Entry
Ingestion: Yes; Inhalation: Yes; Skin: Yes; Eye: Yes
Inhalation
Avoid breathing vapors or mists. May cause headache and dizziness. High vapor concentrations are irritating to the nose, throat and lungs and can cause systemic effects. Vapors can readily accumulate in confined or poorly ventilated areas.
Ingestion
Ingestion is not a probable route of exposure. Harmful if swallowed.
Skin
May be harmful if absorbed through skin, may produce kidney, liver, and central nervous system damage. A single exposure is not likely to result in the material being absorbed through the skin in harmful amounts.
Eye
Substance may cause severe eye irritation.
Medical Conditions
Aggravated by
Exposure
Pre-existing neurological conditions, skin disorders, and respiratory disease.
Carcinogenicity
IARC: No; NTP: No; OSHA: No
Reproductive Toxicity
Toluene may be harmful to the human fetus based on positive test results with laboratory animals. Case studies show that prolonged intentional abuse of toluene during pregnancy can cause severe birth defects in humans.
Target Organs
Prolonged or repeated overexposure may cause eye, skin, respiratory system, central nervous system, peripheral nervous system, liver, and kidney damage.
Section 4: First Aid Measures

 

Epinephrine and other sympathomimetic drugs may initiate cardiac arrhythmias (irregular beating) in persons exposed to high concentrations of hexane (e.g. in enclosed spaces or with deliberate abuse). If used, monitor heart action closely. Consider use of other drugs with less arrhythmogenic potential.
Inhalation
Remove to fresh air. If difficulty persists seek medical attention.
Ingestion
Call poison control center immediately. Follow their specific instructions. Do not induce vomiting.
Skin
Wash with soap and water. Contact a physician if irritation develops or persists.
Eye
Hold eyelids apart and flush with plenty of water for at least 15 minutes. Seek medical attention.
Section 5: Fire-Fighting Measures
Flammability Class
OSHA)
IB
Flash Point
<-10°F - 45°F; Setaflash
Explosive Range
Lower explosive limit 1.2%; Upper explosive limit 7.5%
Flammable Liquid
Can form explosive mixtures at temperatures at or above the flashpoint.
Extinguishing Media
Use alcohol foam, carbon dioxide, dry chemical, or ABC dry chemical when fighting fires involving this product.
Hazardous Combustion
Products
Oxides of carbon may be released during combustion.
Fire-Fighting Procedures
Wear a NIOSH approved self-contained breathing apparatus. Wear appropriate personal protective equipment. Water may be ineffective, but may be used to cool exposed containers to prevent buildup and possible auto ignition or explosion when exposed to extreme heat.
Section 6: Accidental Release Measures
Containment Techniques
Use inert absorbent to dike the spill. Keep away from drains.
Clean-up
If possible pump liquid into an approved container or spread absorbent over spills and shovel (use non-sparking equipment) product/absorbent mixture into an approved container. If product has dried, scrape up and place in an approved container.
Emergency Measures
Isolate hazard area. Keep unnecessary and unprotected personnel from entering area. Wear all appropriate personal protection equipment (PPE) (See Section 8).
Section 7: Handling and Storage
Handling
Avoid breathing vapors from the headspace of containers. Keep lid closed when not in use. Use only in well-ventilated areas. Follow all MSDS/label precautions even after container is emptied. Containers may retain product residue and vapors.
Storage
Keep away from sources of ignition. Do not store above 110°F. Store large quantities in buildings designed and protected for storage of NFPA Class 1-B flammable materials.
Section 8: Exposure Controls and Personal Protection
Occupational Exposure Limits
 
hexane
toluene
ACGIH TLV
50.00
20.00
ACGIH TLV-C
Not Established
Not Established
ACGIH STEL
Not Established
Not Established
OSHA STEL
Not Established
Not Established
OSHA PEL
500.00 ppm
200.00 ppm
The OSHA Ceiling for toluene is 300 ppm.
Engineering Controls
Use local exhaust as needed to maintain occupational exposure limits. Maintain standard plant ventilation.
Other
Facilities storing or utilizing any chemical should be equipped with an eyewash facility and a safety shower.
Respiratory
Protection
Where exposure limits may be exceeded select a NIOSH approved respirator with appropriate Protection Factor and cartridge for the specific contaminants. Follow requirements for respiratory protection in OSHA 1910.134.
Eye Protection
Chemical splash goggles (ANSI Z87.1 or approved equivalent).
Skin Protection
Where skin contact can occur wear impervious gloves.
Section 9: Physical and Chemical Properties
Form
mastic
Appearance/Color
gray
Odor
solvent
Solubility (in water)
nil
pH Value
not applicable
Boiling Range/Point
121°F
Evaporation Rate
faster than n-Butyl Acetate
% Volatile
25.38%
Specific Gravity
1.16
VOC
295 g/l
Section 10: Stability and Reactivity
Stability
This product is stable.
Hazardous
Polymerization
Hazardous polymerization will not occur.
Conditions
to Avoid
Heat, sparks, open flames
Incompatibility
Strong oxidizing agents, acids and bases
Hazardous
Decomposition
Products
Will not occur.
Section 11: Toxicological Information
Hexane/Acute
Ingestion of hexane can cause nausea, vomiting, stomach pain, and diarrhea. Hexane can irritate the skin and eyes. Acutely, the most common toxic effects are central nervous system depression and chemical pneumonitis resulting from aspiration into the lungs following ingestion.
Hexane/Chronic
Dermal irritation and central nervous system depression accompanied by peripheral nervous system damage (polyneuropathy) are common traits of sustained overexposure.
Toluene/Acute
Toluene is a central nervous system depressant and skin and mucous membrane irritant. Severe dermatitis may result from its drying and defatting action. Toluene is an aspiration hazard causing chemical pneumonitis.
Toluene/Chronic
Toluene can cause cardiac sensitization. It is toxic to the kidney and liver, and can cause effects on the blood system such as increased clotting time. Toluene may be harmful to the human fetus based on positive test results with laboratory animals. Case studies show that prolonged intentional abuse of toluene during pregnancy can cause birth defects in humans.
Section 12: Ecological Information
This formulation has not been tested for environmental effects.
Section 13: Disposal Considerations
Waste Disposal
Disposal of this product must comply with all applicable federal, state, and local regulations.
Container Disposal
Disposal of this container should comply with all applicable federal, state, and local regulations.
Section 14: Transport Information
For any shipment of 10.5-ounce cartridges, and for 1-gallon pails not shipped by air:
DOT
UN Number: None
UN Pack Group: Not Applicable
UN Class: ORM-D
Shipping Name: Consumer Commodity
Air
UN Number: ID8000
UN Pack Group: Not Applicable
UN Class: 9
ICAO/IATA: 9
Shipping Name: Consumer Commodity
Maritime
UN Number: None
UN Pack Group: Not Applicable
UN Class: Not Applicable
IMDG Class: Limited Quantity; pg 0149
Shipping Name: Dangerous Goods in Limited Quantities of Class 3
For air shipments of 1-gallon pails
Air
UN Number: UN1133
UN Pack Group: III
UN Class: 3
ICAO/IATA: 3
IMDG Class: 3
Shipping Name: Adhesives containing a Flammable Liquid
Packaging may not be approved for shipping by air. Contact McGill AirSeal for further information.
Section 15: Regulatory Information
SARA Title III Section 313
This product contains the following toxic chemicals subject to the reporting requirements of Section 313 of the Emergency Planning and Community Right to Know Act of 1986 and of 40 CFR 372.
Chemical Name
CAS Number
Percent
hexane
110-54-3
20.66
toluene
108-88-3
4.72

PROP 65 (teratogen)
WARNING: This product contains a chemical known to the state of California to cause birth defects or other reproductive harm.
Chemical Name
CAS Number
Percent
toluene
108-88-3
4.72

TSCA (Toxic Substances Control Act Inventory)
All components of this product are listed on the TSCA inventory except as exempted.

Pennsylvania
Hazardous components required to be listed at 1% or more
toluene; benzene, methyl-; 108-88-3
kaolin clay; kaolin; 1332-58-7
hexane; hexane; 110-54-3
Non-hazardous components required to be listed at 3% or more
styrene-butadiene rubber; 9003-55-8
petroleum haydrocarbon resin (mixture)
chlorinated paraffin; 63449-39-8
petroleum hydrocarbon resin; 64742-18-3

New Jersey
styrene-butadiene rubber; 9003-55-8
hexane; 110-54-3
clay; 1332-58-7
chlorinated paraffin; 63449-39-8
petroleum hydrocarbon resin (mixture)
Section 16: Other Information
Disclaimer
While the information and recommendations set forth herein are believed to be accurate as of the data hereof, McGill AirSeal LLC makes no warranty, express or implied, with respect thereto and disclaims all liability from reliance thereon.

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e-mail us: sales@mcgillairseal.com

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Products depicted were current at the time of publication. All product designs,
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