Material Safety Data Sheet
MSDS Name
Uni-Sil Silicone Sealer
Revision Date
January 1, 2013
Section 1: Chemical Product and Company Identification
Product Name
Uni-Sil Silicone Sealer
CAS Number
none
HMIS Hazard Rating
Health: 2, Fire: 1, 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
silicone elastomer
Product Use
sealer
Product Code
008911
Section 2: Composition and Information about Ingredients
Hazardous Ingredients
CAS Number
Percent
triacetoxyethylsilane
17689-77-9
≤2
methylsilanetriyl triacetate
4253-34-3
≤2
distillates (petroleum),
hydro-treated middle
64742-46-7
≤26
naptha (petroleum),
hydro-treated heavy
64742-48-9
≤26
OSHA PELs and ACGIH TLVs are listed in Section 8 where applicable.
Section 3: Hazard Identification
Acute Effects
Inhalation
Irritates respiratory passages very slightly.
Ingestion
No significant effects expected from a single, short-term exposure.
Skin
May cause moderate irritation.
Eye
Direct contact may cause moderate irritation.
Prolonged/Repeated Exposure Effects
Inhalation
No known applicable information.
Ingestion
No known applicable information.
Skin
No known applicable information.
Signs and Symptoms of Overexposure
Inhalation
No known applicable information.
Ingestion
No known applicable information.
Skin
No known applicable information.
Medical Conditions Aggravated by Exposure
Inhalation
No known applicable information.
Ingestion
No known applicable information.
Skin
No known applicable information.
Primary Route(s)
of Entry
Ingestion, yes; inhalation, yes; skin, yes; eye, yes
Section 4: First Aid Measures
Eye Contact
Hold eyelids apart and flush with plenty of water for at least 15 minutes. Seek medical attention.
Skin Contact
Remove from skin and wash with soap and water. Contact a physician if irritation develops or persists.
Inhalation
Remove individual to fresh air. No first aid should be needed. If difficulty persists, seek medical attention.
Ingestion
No first aid should be needed.
Section 5: Fire-Fighting Measures
Flash Point
n/a
Explosive Range
Lower explosive limit: Not determined
Upper explosive limit: Not determined
Autoignition Temperature
Not determined
Extinguishing Media
On small fires use carbon dioxide, dry chemical, or water spray. On large fires use dry chemical, foam, or water spray.
Hazardous Combustion
Products
Thermal breakdown of this product during fire or very high heat conditions may evolve the following hazardous decomposition products: carbon oxides and traces of incompletely burned carbon compounds, formaldehyde, and silicone dioxide. When heated to temperatures about 150°C in the presence of air, product can form formaldehyde vapors. Formaldehyde is a potential cancer hazard, a known skin and respiratory sensitizer, and an irritant to the eyes, nose, throat, skin, and digestive system.
Fire-Fighting Procedures
Wear a NIOSH approved self-contained breathing apparatus. Wear appropriate personal protective equipment. Water can be used to keep fire-exposed containers cool. Determine the need to evacuate or isolate the area according to your local emergency plan.
Section 6: Accidental Release Measures
Containment/Clean-up Techniques
Isolate the hazard area. Keep unnecessary and unprotected personnel from entering the area. Wear all appropriate personal protection equipment (PPE) (See Section 8). Wipe up or scrape up and contain for salvage or disposal. Clean the area as appropriate, because the spilled materials may present a slip hazard. Final cleaning may require use of steam, solvents, or detergents. Dispose of the saturated absorbent or cleaning materials appropriately, because spontaneous heating may occur. Federal, state, and local laws and regulations may apply to releases and disposal of the material, as well as the materials used to cleanup the releases.
Section 7: Handling and Storage
Handling
Use with adequate ventilation. Product evolves acetic acid when exposed to water or humid air. Provide ventilation during use to control acetic acid within exposure guidelines or use respiratory protection. Avoid eye contact. Avoid skin contact.
Storage
Use reasonable care and store away from oxidizing materials. Keep container closed and store away from water or moisture.
Section 8: Exposure Controls and Personal Protection
Occupational Exposure Limits
 
triacetoxyethylsilane
ACGIH TLV-TWA
10 ppm
ACGIH TLV-STEL
15 ppm
OSHA PEL-TWA
10 ppm
Engineering Controls
Use local exhaust as needed to maintain occupational exposure limits. Maintain standard plant ventilation.
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.
Skin
Protection
Where skin contact can occur, wear impervious gloves. Wash at mealtime and end of shift. Contaminated clothing and shoes should be removed as soon as practical and thoroughly cleaned before reuse.
Eye
Protection
Chemical splash goggles (ANSI Z87.1 or approved equivalent).
Other
Facilities storing or utilizing any chemical should be equipped with an eyewash facility and a safety shower.
Section 9: Physical and Chemical Properties
Form
paste
Appearance/Color
aluminum/white/clear/black/limestone/bronze
Odor
acetic acid odor
Solubility (in water)
not determined
pH Value
not determined
Boiling Range/Point
not determined
Evaporation Rate
not determined
Specific Gravity
0.96 (at 25°C)
Volatile Content
not determined
Viscosity
not determined
Section 10: Stability and Reactivity
Stability
This product is stable.
Hazardous
Polymerization
Hazardous polymerization will not occur.
Conditions
to Avoid
none
Hazardous Decomposition
Products
Oxidizing material can cause a reaction. Water, moisture, or humid air can cause hazardous vapors to form as described in Section 8.
Section 11: Toxicological Information
No known applicable information on special hazards on components.
Section 12: Ecological Information
This formulation has not been tested for environmental effects.
Section 13: Disposal Considerations
RCRA Hazard Class
(40 CFR 261)
When a decision is made to discard this material, as received, is it classified as a hazardous waste? No.
Container Disposal
Disposal of this container should comply with all applicable federal, state, and local regulations.
Section 14: Transport Information
DOT
Not subjected to DOT.
Ocean Shipment
(IMDG)
Not subjected to IMDG code.
Air Shipment
(IATA)
Not subjected to IATA regulations.
Section 15: Regulatory Information
SARA Title III Chemical Listings
Section 302 Extremely Hazardous Substances
none
Section 304 CERLA
Hazardous Substances
none
Section 312 Hazard Class
Acute, Yes; Chronic, No; Fire, No; Pressure, No; Reactive, No
Section Title 313
None present or none present in regulated quantities.
Toxic Substances Control Act (TSCA)
All components of this product are listed on the TSCA inventory except as exempted.

California Proposition 65 (Teratogen)
WARNING: The chemical(s) noted below and contained in this product, are known to the state of California to cause cancer, birth defects, or other reproductive harm. None known.

Pennsylvania
Chemical
Name
CAS Number
Wt/Wt % is Less Than
dimethyl siloxane,
hydroxyl-terminated
70131-67-8
87.0
silica, amorphous
7631-86-9
10.0

Massachusetts
Chemical Name
CAS Number
Wt/Wt % is Less Than
silica, amorphous
7631-86-9
10.0

New Jersey
Chemical Name
CAS Number
Wt/Wt % is Less Than
dimethyl siloxane,
hydroxyl-terminated
70131-67-8
87.0
silica, amorphous
7631-86-9
10.0
distillates (petroleum),
hydro-treated middle
64742-46-7
25.0
triacetoxyethylsilane
17689-77-9
2.0
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.

© Copyright 2001-2017 McGill AirSeal LLC
e-mail us: sales@mcgillairseal.com

An enterprise of United McGill Corporation—Family owned and operated since 1951
All the trademarks (™) and registered trademarks (®) in this Web site are the property of United McGill Corporation.

Products depicted were current at the time of publication. All product designs,
specifications, and features are subject to change without notice.