DOW CORNING CORPORATION
Material Safety Data Sheet
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DOW CORNING(R) 995 SILICONE STRUCTURAL SEALANT, BLACK
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.: 02168715 Revision Date: 2003/04/21
Generic Description: Silicone elastomer
Physical Form: Paste
Color: Black
Odor: Alcoholic 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
PMN871176 <=46.0 Dimethyl siloxane, trimethoxysilyl-terminated
1185-55-3 1.0 - 5.0 Methyltrimethoxysilane
57-11-4 <=1.1 Stearic acid
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: Low ingestion hazard in normal use.
Prolonged/Repeated Exposure Effects
Skin: Repeated or prolonged contact may cause defatting and drying of skin which may result
in skin irritation and dermatitis.
Inhalation: No known applicable information.
Oral: Repeated ingestion or swallowing large amounts may injure internally.
Signs and Symptoms of Overexposure
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Material Safety Data Sheet
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DOW CORNING(R) 995 SILICONE STRUCTURAL SEALANT, BLACK
No known applicable information.
Medical Conditions Aggravated by Exposure
No known applicable information.
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:
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: Quartz. Carbon oxides and traces of incompletely burned carbon compounds. Nitrogen
oxides. Silicon dioxide. Formaldehyde. Metal oxides. Sulfur oxides.
6. ACCIDENTAL RELEASE MEASURES
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Material Safety Data Sheet
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DOW CORNING(R) 995 SILICONE STRUCTURAL SEALANT, BLACK
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 some silicone 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. 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. Avoid skin contact. Avoid breathing vapor. Keep container closed. Do not
take internally.
Keep container closed and store away from water or moisture.
8. EXPOSURE CONTROLS / PERSONAL PROTECTION
Component Exposure Limits
CAS Number Component Name Exposure Limits
PMN871176 Dimethyl siloxane, See methyl alcohol comments.
trimethoxysilyl-terminated
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: Wash at mealtime and end of shift. Contaminated clothing and shoes should be removed
as soon as practical and thoroughly cleaned before reuse. Chemical protective gloves
are recommended.
Suitable Gloves: Silver Shield(R). 4H(R).
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DOW CORNING(R) 995 SILICONE STRUCTURAL SEALANT, BLACK
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: Wash at mealtime and end of shift. Contaminated clothing and shoes should be removed
as soon as practical and thoroughly cleaned before reuse. Chemical protective gloves
are recommended.
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. Avoid skin contact. Avoid breathing vapor. Keep container closed.
Do not take internally. Use reasonable care.
Comments: 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: Black
Odor: Alcoholic odor
Specific Gravity @ 25癈: Not determined.
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
specifications.
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Material Safety Data Sheet
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DOW CORNING(R) 995 SILICONE STRUCTURAL SEALANT, BLACK
10. STABILITY AND REACTIVITY
Chemical Stability: Stable.
Hazardous Hazardous polymerization will not occur.
Polymerization:
Conditions to Avoid: None.
Materials to Avoid: Water, moisture, or humid air can cause hazardous vapours to form as described in
Section 8 . Oxidizing material can cause a reaction.
11. TOXICOLOGICAL INFORMATION
Component Toxicology Information
No known applicable information.
Special Hazard Information on Components
No known applicable information.
12. ECOLOGICAL INFORMATION
Environmental Fate and Distribution
Complete information is not yet available.
Environmental Effects
Complete information is not yet available.
Fate and Effects in Waste Water Treatment Plants
Complete information is not yet available.
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
DOW CORNING CORPORATION
Material Safety Data Sheet
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DOW CORNING(R) 995 SILICONE STRUCTURAL SEALANT, BLACK
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:
EPA SARA Title III Chemical Listings
Section 302 Extremely Hazardous Substances:
None.
Section 304 CERCLA Hazardous Substances:
None.
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
DOW CORNING CORPORATION
Material Safety Data Sheet
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DOW CORNING(R) 995 SILICONE STRUCTURAL SEALANT, BLACK
Water and Toxic Enforcement Act of 1986 (Proposition 65) as being known to cause cancer, birth defects or other
reproductive harm.
None known.
Massachusetts
CAS Number Wt % Component Name
471-34-1 <=41.0 Calcium carbonate
1333-86-4 <=1.1 Carbon black
New Jersey
CAS Number Wt % Component Name
PMN871176 <=46.0 Dimethyl siloxane, trimethoxysilyl-terminated
None 40.0 - 70.0 Calcium carbonate treated with stearic acid
471-34-1 <=41.0 Calcium carbonate
68083-19-2 <=6.3 Dimethyl siloxane, dimethylvinyl-terminated
1185-55-3 1.0 - 5.0 Methyltrimethoxysilane
1333-86-4 <=1.1 Carbon black
14808-60-7 <1.0 Quartz
Pennsylvania
CAS Number Wt % Component Name
PMN871176 <=46.0 Dimethyl siloxane, trimethoxysilyl-terminated
None 40.0 - 70.0 Calcium carbonate treated with stearic acid
471-34-1 <=41.0 Calcium carbonate
68083-19-2 <=6.3 Dimethyl siloxane, dimethylvinyl-terminated
1333-86-4 <=1.1 Carbon black
16. OTHER INFORMATION
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Material Safety Data Sheet
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DOW CORNING(R) 995 SILICONE STRUCTURAL SEALANT, BLACK
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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