Name:
Methyltrichlorosilane 98%
Synonym:
Trichloromethylsilan
CAS:
75-79-6
Section 1 - Chemical Product
MSDS Name:Methyltrichlorosilane 98%
Synonym:Trichloromethylsilan
Synonym:Trichloromethylsilan
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 75-79-6 | Methyltrichlorosilane | 200-902-6 |
| Hazard Symbols: XI F Risk Phrases: 11 14 36/37/38 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Highly flammable. Reacts violently with water. Irritating to eyes, respiratory system and skin.
Potential Health Effects
Eye:
Causes severe eye irritation. May cause blindness. Causes redness and pain.
Skin:
Causes severe skin irritation. Harmful if absorbed through the skin.
Substance is rapidly absorbed through the skin. Causes redness and pain.
Ingestion:
Aspiration hazard. May be harmful if swallowed.
Inhalation:
Causes respiratory tract irritation. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
Chronic:
Not available.
Highly flammable. Reacts violently with water. Irritating to eyes, respiratory system and skin.
Potential Health Effects
Eye:
Causes severe eye irritation. May cause blindness. Causes redness and pain.
Skin:
Causes severe skin irritation. Harmful if absorbed through the skin.
Substance is rapidly absorbed through the skin. Causes redness and pain.
Ingestion:
Aspiration hazard. May be harmful if swallowed.
Inhalation:
Causes respiratory tract irritation. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
Chronic:
Not available.
Section 4 - FIRST AID MEASURES
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Vapors may form an explosive mixture with air.
Vapors can travel to a source of ignition and flash back. Will burn if involved in a fire. Containers may explode in the heat of a fire.
Flammable liquid and vapor.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. DO NOT USE WATER!
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Vapors may form an explosive mixture with air.
Vapors can travel to a source of ignition and flash back. Will burn if involved in a fire. Containers may explode in the heat of a fire.
Flammable liquid and vapor.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. DO NOT USE WATER!
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Remove all sources of ignition.
Use a spark-proof tool.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Remove all sources of ignition.
Use a spark-proof tool.
Section 7 - HANDLING and STORAGE
Handling:
Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Do not allow contact with water. Use only in a chemical fume hood.
Storage:
Keep away from sources of ignition. Store in a cool, dry place.
Store in a tightly closed container. Keep under a nitrogen blanket.
Flammables-area.
Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Do not allow contact with water. Use only in a chemical fume hood.
Storage:
Keep away from sources of ignition. Store in a cool, dry place.
Store in a tightly closed container. Keep under a nitrogen blanket.
Flammables-area.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 75-79-6: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 75-79-6: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Liquid
Color: clear, colorless
Odor: Sharp, acrid HCl-like odor.
pH: Not available.
Vapor Pressure: 180 mbar @ 20 deg C
Viscosity: mPas 20 deg C
Boiling Point: 66 deg C @ 760.00mm Hg
Freezing/Melting Point: -77 deg C
Autoignition Temperature: 404 deg C ( 759.20 deg F)
Flash Point: -13 deg C ( 8.60 deg F)
Explosion Limits, lower: 5.50 vol %
Explosion Limits, upper: 10.40 vol %
Decomposition Temperature:
Solubility in water: reacts
Specific Gravity/Density: 1.2730g/cm3
Molecular Formula: CH3Cl3Si
Molecular Weight: 149.48
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Unstable.
Conditions to Avoid:
Incompatible materials, ignition sources, exposure to moist air or water.
Incompatibilities with Other Materials:
Strong acids - strong bases - strong oxidizing agents - alcohols - chemically active metals (potassium, magnesium, sodium, zinc) - alkalis.
Hazardous Decomposition Products:
Hydrogen chloride, phosgene, carbon monoxide, carbon dioxide, silicon dioxide.
Hazardous Polymerization: Will not occur.
Unstable.
Conditions to Avoid:
Incompatible materials, ignition sources, exposure to moist air or water.
Incompatibilities with Other Materials:
Strong acids - strong bases - strong oxidizing agents - alcohols - chemically active metals (potassium, magnesium, sodium, zinc) - alkalis.
Hazardous Decomposition Products:
Hydrogen chloride, phosgene, carbon monoxide, carbon dioxide, silicon dioxide.
Hazardous Polymerization: Will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 75-79-6: VV4550000 LD50/LC50:
CAS# 75-79-6: Draize test, rabbit, eye: 5 mg/24H Severe; Draize test, rabbit, skin: 500 uL Severe; Inhalation, mouse: LC50 = 180 mg/m3/2H; Inhalation, rat: LC50 = 450 ppm/4H; Oral, rat: LD50 = 1620 uL/kg; Skin, rabbit: LD50 = 840 uL/kg.
Carcinogenicity:
Methyltrichlorosilane - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 75-79-6: VV4550000 LD50/LC50:
CAS# 75-79-6: Draize test, rabbit, eye: 5 mg/24H Severe; Draize test, rabbit, skin: 500 uL Severe; Inhalation, mouse: LC50 = 180 mg/m3/2H; Inhalation, rat: LC50 = 450 ppm/4H; Oral, rat: LD50 = 1620 uL/kg; Skin, rabbit: LD50 = 840 uL/kg.
Carcinogenicity:
Methyltrichlorosilane - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Ecotoxicity:
see Genium
see Genium
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: METHYLTRICHLOROSILANE
Hazard Class: 3 (8)
UN Number: 1250
Packing Group: I
IMO
Shipping Name: METHYLTRICHLOROSILANE
Hazard Class: 3.2 (8)
UN Number: 1250
Packing Group: I
RID/ADR
Shipping Name: METHYLTRICHLOROSILANE
Hazard Class: 3
UN Number: 1250
Packing group: I
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI F
Risk Phrases:
R 11 Highly flammable.
R 14 Reacts violently with water.
R 36/37/38 Irritating to eyes, respiratory system
and skin.
Safety Phrases:
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 39 Wear eye/face protection.
WGK (Water Danger/Protection)
CAS# 75-79-6: No information available.
Canada
CAS# 75-79-6 is listed on Canadas DSL List.
CAS# 75-79-6 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 75-79-6 is listed on the TSCA inventory.
