DOW CORNING CORPORATION
Material Safety Data Sheet
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DOW CORNING(R) 795 SILICONE BUILDING SEALANT, WHITE
1. IDENTIFICATION OF THE SUBSTANCE AND OF THE COMPANY
24 Hour Emergency Telephone: (989) 496-5900
Dow Corning Corporation
South Saginaw Road Customer Service: (989) 496-6000
Midland, Michigan 48686 Product Disposal Information: (989) 496-6315
CHEMTREC: (800) 424-9300
MSDS No.: 02407485 Revision Date: 2004/03/09
Generic Description: Silicone elastomer
Physical Form: Paste
Color: Off-White
Odor: Slight odor
NFPA Profile: Health 1 Flammability 1 Instability/Reactivity 0
Note: NFPA = National Fire Protection Association
2. OSHA HAZARDOUS COMPONENTS
CAS Number Wt % Component Name
1185-55-3 1.0 - 5.0 Methyltrimethoxysilane
The above components are hazardous as defined in 29 CFR 1910.1200.
3. EFFECTS OF OVEREXPOSURE
Acute Effects
Eye: Direct contact may cause mild irritation.
Skin: No significant irritation expected from a single short-term exposure.
Inhalation: Vapor overexposure may cause drowsiness.
Oral: No significant effects expected from a single short-term exposure.
Prolonged/Repeated Exposure Effects
Skin: Repeated or prolonged exposure may cause irritation.
Inhalation: No known applicable information.
Oral: Repeated ingestion or swallowing large amounts may injure internally.
Signs and Symptoms of Overexposure
No known applicable information.
Medical Conditions Aggravated by Exposure
No known applicable information.
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Material Safety Data Sheet
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DOW CORNING(R) 795 SILICONE BUILDING SEALANT, WHITE
The above listed potential effects of overexposure are based on actual data, results of studies performed upon similar
compositions, component data and/or expert review of the product. Please refer to Section 11 for the detailed toxicology
information.
4. FIRST AID MEASURES
Eye: Immediately flush with water for 15 minutes.
Skin: No first aid should be needed.
Inhalation: Remove to fresh air. Get medical attention if ill effects persist.
Oral: Get medical attention.
Comments: Treat according to person's condition and specifics of exposure.
5. FIRE FIGHTING MEASURES
Flash Point: Not applicable.
Autoignition Not determined.
Temperature:
Flammability Limits in Air: Not determined.
Extinguishing Media: On large fires use dry chemical, foam or water spray. On small fires use carbon dioxide
(CO2), dry chemical or water spray. Water can be used to cool fire exposed containers.
Fire Fighting Measures: Self-contained breathing apparatus and protective clothing should be worn in fighting
large fires involving chemicals. Determine the need to evacuate or isolate the area
according to your local emergency plan. Use water spray to keep fire exposed containers
cool.
Unusual Fire Hazards: None.
Hazardous Decomposition 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. Silicon dioxide.
Formaldehyde. Metal oxides. Quartz.
6. ACCIDENTAL RELEASE MEASURES
DOW CORNING CORPORATION
Material Safety Data Sheet
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DOW CORNING(R) 795 SILICONE BUILDING SEALANT, WHITE
Containment/Clean up: Observe all personal protection equipment recommendations described in Sections 5
and 8. Wipe up or scrape up and contain for salvage or disposal. Clean area as
appropriate since spilled materials, even in small quantities, may present a slip hazard.
Final cleaning may require use of steam, solvents or detergents. Dispose of saturated
absorbant or cleaning materials appropriately, since spontaneous heating may occur.
Local, state and federal laws and regulations may apply to releases and disposal of this
material, as well as those materials and items employed in the cleanup of releases. You
will need to determine which federal, state and local laws and regulations are applicable.
Sections 13 and 15 of this MSDS provide information regarding certain federal and state
requirements.
Note: See section 8 for Personal Protective Equipment for Spills. Call Dow Corning Corporation, (989) 496-5900, if
additional information is required.
7. HANDLING AND STORAGE
Use with adequate ventilation. Traces of benzene (carcinogen) may form if heated in air above 300 F (149 C).
Provide ventilation to control vapor exposure within inhalation guidelines when handling at elevated temperatures.
Review the OSHA benzene regulation for detailed information on safe handling requirements. Product evolves
flammable methyl alcohol when exposed to water or humid air. Provide ventilation during use to control exposure
within Section 8 guidelines or use air-supplied or self-contained breathing apparatus. Avoid eye contact. Do not
take internally. Avoid breathing vapor. Keep container closed.
Use reasonable care and store away from oxidizing materials. Keep container closed and store away from water or
moisture.
8. EXPOSURE CONTROLS / PERSONAL PROTECTION
Component Exposure Limits
CAS Number Component Name Exposure Limits
1185-55-3 Methyltrimethoxysilane Dow Corning guide: TWA 50 ppm. Also see methyl
alcohol comments.
Methyl alcohol forms on contact with water or humid air. Provide adequate ventilation to control exposures within
guidelines of OSHA PEL: TWA 200 ppm and ACGIH TLV-skin: TWA 200 ppm, STEL 250 ppm.
Engineering Controls
Local Ventilation: Recommended.
General Ventilation: Recommended.
Personal Protective Equipment for Routine Handling
Eyes: Use proper protection - safety glasses as a minimum.
Skin: Washing at mealtime and end of shift is adequate.
Suitable Gloves: No special protection needed.
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Material Safety Data Sheet
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DOW CORNING(R) 795 SILICONE BUILDING SEALANT, WHITE
Inhalation: Use respiratory protection unless adequate local exhaust ventilation is provided or air
sampling data show exposures are within recommended exposure guidelines. Industrial
Hygiene Personnel can assist in judging the adequacy of existing engineering controls.
Suitable Respirator: General and local exhaust ventilation is recommended to maintain vapor exposures
below recommended limits. Where concentrations are above recommended limits as
determined by air sampling or are unknown, appropriate respiratory protection should be
worn. Follow OSHA Respirator Regulations (29 CFR 1910.134) and use NIOSH/MSHA
approved respirators.
Personal Protective Equipment for Spills
Eyes: Use full face respirator.
Skin: Washing at mealtime and end of shift is adequate.
Inhalation/Suitable Respiratory protection recommended. Follow OSHA Respirator Regulations (29 CFR
Respirator: 1910.134) and use NIOSH/MHSA approved respirators. Protection provided by air
purifying respirators against exposure to any hazardous chemical is limited. Use a
positive pressure air supplied respirator if there is any potential for uncontrolled release,
exposure levels are unknown, or any other circumstance where air purifying respirators
may not provide adequate protection.
Precautionary Measures: Avoid eye contact. Do not take internally. Avoid breathing vapor. Keep container closed.
Use reasonable care.
Comments: Traces of benzene (carcinogen) may form if heated in air above 300 F (149 C). Provide
ventilation to control vapor exposure within inhalation guidelines when handling at
elevated temperatures. Review the OSHA benzene regulation for detailed information on
safe handling requirements. Product evolves flammable methyl alcohol when exposed to
water or humid air. Provide ventilation during use to control exposure within Section 8
guidelines or use air-supplied or self-contained breathing apparatus.
Note: These precautions are for room temperature handling. Use at elevated temperature or aerosol/spray applications may
require added precautions.
9. PHYSICAL AND CHEMICAL PROPERTIES
Physical Form: Paste
Color: Off-White
Odor: Slight odor
Specific Gravity @ 25癈: 1.52
Viscosity: Not determined.
Freezing/Melting Point: Not determined.
Boiling Point: Not determined.
Vapor Pressure @ 25癈: Not determined.
Vapor Density: Not determined.
Solubility in Water: Not determined.
pH: Not determined.
Volatile Content: Not determined.
Note: The above information is not intended for use in preparing product specifications. Contact Dow Corning before writing
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DOW CORNING(R) 795 SILICONE BUILDING SEALANT, WHITE
specifications.
10. STABILITY AND REACTIVITY
Chemical Stability: Stable.
Hazardous Hazardous polymerization will not occur.
Polymerization:
Conditions to Avoid: None.
Materials to Avoid: Oxidizing material can cause a reaction. Water, moisture, or humid air can cause
hazardous vapors to form as described in Section 8.
11. TOXICOLOGICAL INFORMATION
Special Hazard Information on Components
No known applicable information.
12. ECOLOGICAL INFORMATION
Environmental Fate and Distribution
Air: This product is a solid consisting of a high molecular weight silicone polymer and other
solid materials. Unless milled to produce a dust or particles, it is unlikely to give rise to
atmospheric contamination.
Water: This product is a solid which is completely insoluble in water. As the specific gravity is >1,
it will sink to the bottom of the water course.
Soil: This product will enter the terrestrial environment if, as a component of municipal or
industrial solid waste the product is landfilled. It is unlikely that further significant
transformation of the product will occur.
Degradation: High molecular weight polymer which is amenable to recycling. The product is not
biodegradable. The product is removed >80% during the sewage treatment process.
Environmental Effects
Toxicity to Water This product has low water solubility and should not present a risk to aquatic organisms.
Organisms:
Toxicity to Soil Organisms: This product is a solid and does not contain significant concentrations of water soluble
constituents that may be leached from the product. It is therefore not likely to present a
danger to terrestrial organisms.
Bioaccumulation: This product is a solid which is not soluble in water and if ingested will not be absorbed.
Fate and Effects in Waste Water Treatment Plants
This product is a solid rubber type material which is unlikely to have any adverse effect on bacteria.
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Material Safety Data Sheet
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DOW CORNING(R) 795 SILICONE BUILDING SEALANT, WHITE
Ecotoxicity Classification Criteria
Hazard Parameters (LC50 or EC50) High Medium Low
Acute Aquatic Toxicity (mg/L) <=1 >1 and <=100 >100
Acute Terrestrial Toxicity <=100 >100 and <= 2000 >2000
This table is adapted from "Environmental Toxicology and Risk Assessment", ASTM STP 1179, p.34, 1993.
This table can be used to classify the ecotoxicity of this product when ecotoxicity data is listed above. Please read the other information presented
in the section concerning the overall ecological safety of this material.
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
State or local laws may impose additional regulatory requirements regarding disposal.
Call Dow Corning Corporate Environmental Management, (989) 496-6315, if additional information is required.
14. TRANSPORT INFORMATION
DOT Road Shipment Information (49 CFR 172.101)
Not subject to DOT.
Ocean Shipment (IMDG)
Not subject to IMDG code.
Air Shipment (IATA)
Not subject to IATA regulations.
Call Dow Corning Transportation, (989) 496-8577, if additional information is required.
15. REGULATORY INFORMATION
Contents of this MSDS comply with the OSHA Hazard Communication Standard 29 CFR 1910.1200.
TSCA Status: All chemical substances in this material are included on or exempted from listing on the TSCA
Inventory of Chemical Substances.
EPA SARA Title III Chemical Listings
Section 302 Extremely Hazardous Substances:
None.
Section 304 CERCLA Hazardous Substances:
None.
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Material Safety Data Sheet
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DOW CORNING(R) 795 SILICONE BUILDING SEALANT, WHITE
Section 312 Hazard Class:
Acute: Yes
Chronic: No
Fire: No
Pressure: No
Reactive: No
Section 313 Toxic Chemicals:
None present or none present in regulated quantities.
Supplemental State Compliance Information
California
Warning: This product contains the following chemical(s) listed by the State of California under the Safe Drinking
Water and Toxic Enforcement Act of 1986 (Proposition 65) as being known to cause cancer, birth defects or other
reproductive harm.
CAS Number Wt % Component Name
108-88-3 <0.1 Toluene Developmental toxin.
Massachusetts
CAS Number Wt % Component Name
471-34-1 40.0 - 70.0 Calcium carbonate
546-93-0 1.0 - 5.0 Magnesium carbonate
New Jersey
CAS Number Wt % Component Name
471-34-1 40.0 - 70.0 Calcium carbonate
70131-67-8 30.0 - 60.0 Dimethyl siloxane, hydroxy-terminated
63148-62-9 <=9.2 Polydimethylsiloxane
112945-52-5 <=3.8 Amorphous fumed silica
1185-55-3 1.0 - 5.0 Methyltrimethoxysilane
14808-60-7 <1.0 Quartz
Pennsylvania
CAS Number Wt % Component Name
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Material Safety Data Sheet
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DOW CORNING(R) 795 SILICONE BUILDING SEALANT, WHITE
471-34-1 40.0 - 70.0 Calcium carbonate
70131-67-8 30.0 - 60.0 Dimethyl siloxane, hydroxy-terminated
63148-62-9 <=9.2 Polydimethylsiloxane
112945-52-5 <=3.8 Amorphous fumed silica
16. OTHER INFORMATION
Prepared by: Dow Corning Corporation
These data are offered in good faith as typical values and not as product specifications. No warranty, either
expressed or implied, is hereby made. The recommended industrial hygiene and safe handling procedures are
believed to be generally applicable. However, each user should review these recommendations in the specific
context of the intended use and determine whether they are appropriate.
(R) indicates Registered Trademark
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