Methyltrichlorosilane 75-79-6 MSDS
Name: Methyltrichlorosilane 98% Material Safety Data Sheet
Synonym: Trichloromethylsilan
CAS: 75-79-6
Section 1 - Chemical Product   MSDS Name:Methyltrichlorosilane 98% Material Safety Data Sheet
Synonym:Trichloromethylsilan

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content 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.

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:

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!

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.

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.

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 OSHA's 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.

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.

Section 12 - ECOLOGICAL INFORMATION
  Ecotoxicity:
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 Canada's DSL List.
CAS# 75-79-6 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 75-79-6 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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