Distributed By: MSDS 095
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Foxboro, MA 02035 U.S.A. Part Number X0170BT
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DOW CORNING CORPORATION
Material Safety Data Sheet
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DOW CORNING(R) 1204 RTV PRIME COAT
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.: 01202928 Revision Date: 2008/06/25
Generic Description: Mixture of inorganic and organic compounds
Physical Form: Liquid
Color: Colorless
Odor: Solvent odor.
NFPA Profile: Health 2 Flammability 3 Instability/Reactivity 0
Note: NFPA = National Fire Protection Association
2. HAZARDS IDENTIFICATION
POTENTIAL HEALTH EFFECTS
Acute Effects
Eye: Direct contact may cause severe irritation. Vapor may cause eye irritation.
Skin: May cause moderate irritation.
Inhalation: Vapor may irritate nose and throat.
Oral: May cause vomiting. Aspiration of liquid while vomiting may injure lungs seriously.
Prolonged/Repeated Exposure Effects
Skin: Overexposure may injure internally if absorbed. Repeated or prolonged contact may cause
defatting and drying of skin which may result in skin irritation and dermatitis.
Inhalation: No known applicable information. Nervous system. Kidneys. Liver. Blood. Reproductive
organs. Brain. Lungs.
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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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.
3. COMPOSITION/INFORMATION ON INGREDIENTS
CAS Number Wt % Component Name
64742-89-8 > 60.0 Light aliphatic petroleum solvent naphtha
108-88-3 15.0 - 40.0 Toluene
1330-20-7 5.0 - 10.0 Xylene
682-01-9 3.0 - 7.0 Tetrapropyl orthosilicate
5593-70-4 3.0 - 7.0 Tetrabutyl titanate
2157-45-1 3.0 - 7.0 Tetra (2-methoxyethoxy) silane
71-36-3 1.0 - 5.0 n-Butyl alcohol
109-86-4 <=2.0 Ethylene glycol methyl ether
100-41-4 1.0 - 5.0 Ethylbenzene
The above components are hazardous as defined in 29 CFR 1910.1200.
4. FIRST AID MEASURES
Eye: Immediately flush with water for 15 minutes. Get medical attention.
Skin: Remove from skin and immediately flush with water for 15 minutes. Get medical attention if
irritation or ill effects develop or persist.
Inhalation: Remove to fresh air.
Oral: Get immediate medical attention. Only induce vomiting at the instructions of a physician.
Never give anything by mouth to an unconscious person.
Notes to Physician: Treat according to person's condition and specifics of exposure.
5. FIRE FIGHTING MEASURES
Flash Point: 46 癋 / 7.8 癈 (Pensky-Martens Closed Cup)
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Autoignition Temperature: Not determined.
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. Use water spray to keep fire exposed containers cool. Determine
the need to evacuate or isolate the area according to your local emergency plan.
Unusual Fire Hazards: Vapors are heavier than air and may travel to a source of ignition and flash back. Static
electricity will accumulate and may ignite vapors. Prevent a possible fire hazard by bonding
and grounding or inert gas purge.
6. ACCIDENTAL RELEASE MEASURES
Containment/Clean up: Remove possible ignition sources. Determine whether to evacuate or isolate the area
according to your local emergency plan. Observe all personal protection equipment
recommendations described in Sections 5 and 8. For large spills, provide diking or other
appropriate containment to keep material from spreading. If diked material can be pumped,
store recovered material in appropriate container. Clean up remaining materials from spill
with suitable absorbant. 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 (989) 496-5900, if additional information is
required.
7. HANDLING AND STORAGE
Use with adequate ventilation. Product evolves n-propyl alcohol when exposed to water or humid air. Provide ventilation
during use to control n-propyl alcohol within exposure guidelines or use respiratory protection. Product evolves n-butyl
alcohol when exposed to water or humid air. Provide ventilation during use to control n-butyl alcohol within exposure
guidelines or use respiratory protection. Product evolves 2-methoxyethanol on exposure to water or humid air. Provide
ventilation during use to control 2-methoxyethanol within exposure guidelines or use respiratory protection. 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. Avoid eye exposure. Avoid skin contact. Avoid breathing vapor. Keep
container closed. Do not take internally.
Static electricity will accumulate and may ignite vapors. Prevent a possible fire hazard by bonding and grounding or inert
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gas purge. Keep container closed and away from heat, sparks, and flame. Keep container closed and store away from
water or moisture.
8. EXPOSURE CONTROLS / PERSONAL PROTECTION
Component Exposure Limits
CAS Number Component Name Exposure Limits
64742-89-8 Light aliphatic petroleum solvent naphtha Observe petroleum distillates limits. OSHA PEL (final rule):
TWA 400 ppm.
108-88-3 Toluene OSHA PEL (final rule): 8-Hour TWA 200 ppm, Ceiling 300
ppm, 10 minutes maximum duration 500 ppm. ACGIH TLV:
TWA 20 ppm.
1330-20-7 Xylene Observe xylene limits. OSHA PEL (final rule) and ACGIH
TLV: TWA 100 ppm, STEL 150 ppm.
682-01-9 Tetrapropyl orthosilicate See n-propyl alcohol comments.
5593-70-4 Tetrabutyl titanate See n-butyl alcohol comments.
2157-45-1 Tetra (2-methoxyethoxy) silane See 2-methoxyethanol comments.
71-36-3 n-Butyl alcohol OSHA PEL (final rule): TWA 100 ppm, 300 mg/m3. ACGIH
TLV: TWA 20 ppm.
109-86-4 Ethylene glycol methyl ether OSHA PEL-skin: TWA 25 ppm. ACGIH TLV-skin: TWA
0.1 ppm.
100-41-4 Ethylbenzene OSHA PEL (final rule): TWA 100 ppm, 435 mg/m3. ACGIH
TLV: TWA 100 ppm, STEL 125 ppm.
n-Propyl alcohol is formed upon contact with water or humid air. Provide adequate ventilation to control exposures
within guidelines of OSHA PEL (final rule): TWA 200 ppm, STEL 250 ppm. ACGIH TLV: TWA 100 ppm. n-Butyl
alcohol is formed on contact with water or humid air. Provide adequate ventilation to control exposures within
guidelines of OSHA PEL (final rule): TWA 100 ppm and ACGIH TLV: 20 ppm. 2-Methoxyethanol is formed upon
contact with water or humid air. Provide adequate ventilation to control exposure to within the exposure guideline of
ACGIH TLV-skin: TWA 0.1 ppm.
Engineering Controls
Local Ventilation: Recommended.
General Ventilation: Recommended.
Personal Protective Equipment for Routine Handling
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Eyes: Use chemical worker's goggles.
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: Avoid skin contact by implementing good industrial hygiene practices and procedures. Select
and use gloves and/or protective clothing to further minimize the potential for skin contact.
Consult with your glove and/or personnel protective equipment manufacturer for selection of
appropriate compatible materials.
Inhalation: Use respiratory protection unless adequate local exhaust ventilation is provided or exposure
assessment demonstrates that exposures are within recommended exposure guidelines. IH
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 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 exposure. Avoid skin contact. Avoid breathing vapor. Keep container closed. Do
not take internally. Use reasonable care.
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Comments: Product evolves n-propyl alcohol when exposed to water or humid air. Provide ventilation
during use to control n-propyl alcohol within exposure guidelines or use respiratory protection.
Product evolves n-butyl alcohol when exposed to water or humid air. Provide ventilation
during use to control n-butyl alcohol within exposure guidelines or use respiratory protection.
Product evolves 2-methoxyethanol on exposure to water or humid air. Provide ventilation
during use to control 2-methoxyethanol within exposure guidelines or use respiratory
protection. 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.
Note: These precautions are for room temperature handling. Use at elevated temperature or aerosol/spray applications may require
added precautions. For further information regarding aerosol inhalation toxicity, please refer to the guidance document regarding the
use of silicone-based materials in aerosol applications that has been developed by the silicone industry (www.SEHSC.com) or contact
the Dow Corning customer service group.
9. PHYSICAL AND CHEMICAL PROPERTIES
Physical Form: Liquid
Color: Colorless
Odor: Solvent odor.
Specific Gravity @ 25癈: 0.8
Viscosity: 1 cSt
Freezing/Melting Point: Not determined.
Boiling Point: > 35 癈
Vapor Pressure @ 25癈: Not determined.
Vapor Density: Not determined.
Solubility in Water: Not determined.
pH: Not determined.
Volatile Content: Not determined.
Flash Point: 46 癋 / 7.8 癈 (Pensky-Martens Closed Cup)
Autoignition Temperature: Not determined.
Flammability Limits in Air: Not determined.
Note: The above information is not intended for use in preparing product specifications. Contact Dow Corning before writing
specifications.
10. STABILITY AND REACTIVITY
Chemical Stability: Stable.
Hazardous Hazardous polymerization will not occur.
Polymerization:
Conditions to Avoid: None.
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Materials to Avoid: Oxidizing material can cause a reaction. Water, moisture, or humid air can cause hazardous
vapours to form as described in Section 8 .
Hazardous Decomposition Products
Thermal breakdown of this product during fire or very high heat conditions may evolve the following decomposition
products: Carbon oxides and traces of incompletely burned carbon compounds. Silicon dioxide. Metal oxides.
Formaldehyde.
11. TOXICOLOGICAL INFORMATION
Component Toxicology Information
Toxicology studies with laboratory animals and occupational evaluations with humans have found limited evidence of
birth defects, low birth weights and delayed growth in offspring resulting from repeated exposures to toluene during
pregnancy.
Product may evolve vapors of 2-methoxy ethanol. Laboratory studies have shown high levels of exposure to 2-methoxy
ethanol have resulted in birth defects and adverse reproductive effects in animals.
Special Hazard Information on Components
Carcinogens
CAS Number Wt % Component Name
100-41-4 1.0 - 5.0 Ethylbenzene IARC Group 2B - Possibly Carcinogenic
to Humans.
Teratogens
CAS Number Wt % Component Name
109-86-4 <=2.0 Ethylene glycol methyl ether Evidence of teratogenicity (birth defects)
in laboratory animals.
100-41-4 1.0 - 5.0 Ethylbenzene Evidence of teratogenicity (birth defects)
in laboratory animals.
Mutagens
CAS Number Wt % Component Name
100-41-4 1.0 - 5.0 Ethylbenzene Genetically active in IN VIVO assay(s).
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Reproductive Effects
CAS Number Wt % Component Name
108-88-3 15.0 - 40.0 Toluene Evidence of reproductive effects in
humans.
109-86-4 <=2.0 Ethylene glycol methyl ether Evidence of reproductive effects in
humans.
12. ECOLOGICAL INFORMATION
Environmental Fate and Distribution
Complete information is not yet available.
Environmental Effects
Toxicity to Water No specific information is available.
Organisms:
Toxicity to Soil Organisms: No information is available on the impact of this product on the terrestrial ecosystem; but it is
unlikely to be found at significant concentrations in this environmental compartment.
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? Yes
Characteristic Waste:
Ignitable: D001
TCLP: D018
State or local laws may impose additional regulatory requirements regarding disposal.Call (989) 496-6315, if additional
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information is required.
14. TRANSPORT INFORMATION
DOT Road Shipment Information (49 CFR 172.101)
Proper Shipping Name: Flammable liquids, n.o.s.
Hazard Technical Name: Naphtha / Toluene
Hazard Class: 3
UN/NA Number: UN 1993
Packing Group: II
Hazard Label(s): Flammable Liquid
Ocean Shipment (IMDG)
Proper Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Technical Name: Naphtha / Toluene
Hazard Class: 3
UN/NA Number: UN 1993
Packing Group: II
Hazard Label(s): flammable liquid
Air Shipment (IATA)
Proper Shipping Name: Flammable liquid, n.o.s.
Hazard Technical Name: Naphtha / Toluene
Hazard Class: 3
UN/NA Number: UN 1993
Packing Group: II
Hazard Label(s): Flammable Liquid
Call Dow Corning Transportation, (989) 496-8577, if additional information is required.
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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.
The United States Environmental Protection Agency (USEPA) has determined that an
ingredient in this material has a Significant New Use Rule (SNUR) assigned to it, which limits it's
use to applications approved by the USEPA, per 40 CFR 721. For further assistance, contact the
Regulatory Compliance Department of Dow Corning Corporation.
EPA SARA Title III Chemical Listings
Section 302 Extremely Hazardous Substances (40 CFR 355):
None.
Section 304 CERCLA Hazardous Substances (40 CFR 302):
CAS Number Wt % Component Name
108-88-3 19.0 Toluene
1330-20-7 5.2 Xylene
71-36-3 2.4 n-Butyl alcohol
100-41-4 1.3 Ethylbenzene
Section 311/312 Hazard Class (40 CFR 370):
Acute: Yes
Chronic: Yes
Fire: Yes
Pressure: No
Reactive: No
Section 313 Toxic Chemicals (40 CFR 372):
CAS Number Wt % Component Name
108-88-3 19.0 Toluene
1330-20-7 5.2 Xylene
71-36-3 2.4 n-Butyl alcohol
109-86-4 <=2.0 Ethylene glycol methyl ether
100-41-4 1.3 Ethylbenzene
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Note: Chemicals are listed under the 313 Toxic Chemicals section only if they meet or exceed a reporting threshold.
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 15.0 - 40.0 Toluene Developmental toxin.
109-86-4 <=2.0 Ethylene glycol methyl ether Developmental toxin.
Male reproductive toxin.
100-41-4 1.0 - 5.0 Ethylbenzene Carcinogenic.
Massachusetts
CAS Number Wt % Component Name
108-88-3 15.0 - 40.0 Toluene
1330-20-7 5.0 - 10.0 Xylene
71-36-3 1.0 - 5.0 n-Butyl alcohol
109-86-4 <=2.0 Ethylene glycol methyl ether
100-41-4 1.0 - 5.0 Ethylbenzene
New Jersey
CAS Number Wt % Component Name
64742-89-8 > 60.0 Light aliphatic petroleum solvent naphtha
108-88-3 15.0 - 40.0 Toluene
1330-20-7 5.0 - 10.0 Xylene
682-01-9 3.0 - 7.0 Tetrapropyl orthosilicate
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5593-70-4 3.0 - 7.0 Tetrabutyl titanate
2157-45-1 3.0 - 7.0 Tetra (2-methoxyethoxy) silane
71-36-3 1.0 - 5.0 n-Butyl alcohol
109-86-4 <=2.0 Ethylene glycol methyl ether
100-41-4 1.0 - 5.0 Ethylbenzene
Pennsylvania
CAS Number Wt % Component Name
64742-89-8 > 60.0 Light aliphatic petroleum solvent naphtha
108-88-3 15.0 - 40.0 Toluene
1330-20-7 5.0 - 10.0 Xylene
682-01-9 3.0 - 7.0 Tetrapropyl orthosilicate
5593-70-4 3.0 - 7.0 Tetrabutyl titanate
2157-45-1 3.0 - 7.0 Tetra (2-methoxyethoxy) silane
71-36-3 1.0 - 5.0 n-Butyl alcohol
109-86-4 <=2.0 Ethylene glycol methyl ether
100-41-4 1.0 - 5.0 Ethylbenzene
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
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