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Dichloromethylsilane 75-54-7 MSDS
Name: Dichloromethylsilane 97% Material Safety Data Sheet
Synonym: Methyldichlorosilan
CAS: 75-54-7
Section 1 - Chemical Product   MSDS Name:Dichloromethylsilane 97% Material Safety Data Sheet
Synonym:Methyldichlorosilan

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
75-54-7 Dichloromethylsilane 97% 200-877-1
Hazard Symbols: F C
Risk Phrases: 11 14 34

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Highly flammable. Reacts violently with water. Causes burns.Corrosive.
Potential Health Effects
Eye:
Causes eye burns. May result in corneal injury. May cause conjunctivitis.
Skin:
Causes skin burns.
Ingestion:
May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns.
Inhalation:
Causes chemical burns to the respiratory tract. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. Vapors may cause dizziness or suffocation.
Chronic:
Not available.

Section 4 - FIRST AID MEASURES
  Eyes: Get medical aid immediately. Do NOT allow victim to rub eyes or keep eyes closed. Extensive irrigation with water is required (at least 30 minutes).
Skin:
Get medical aid immediately. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated 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 immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation.
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. Water Reactive. Material will react with water and may release a flammable and/or toxic gas. Use water spray to keep fire-exposed containers cool. Extremely flammable liquid and vapor. Containers may explode in the heat of a fire. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. Will be easily ignited by heat, sparks or flame. Contact with metals may evolve flammable hydrogen gas.
Extinguishing Media:
DO NOT USE WATER! Do NOT get water inside containers. Do NOT use straight streams of water. Cool containers with flooding quantities of water until well after fire is out. For small fires, use dry chemical, soda ash, lime or sand. For large fires, use dry sand, dry chemical, soda ash or lime or withdraw from area and let fire burn.

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. Clean up spills immediately, observing precautions in the Protective Equipment section. Remove all sources of ignition. Use a spark-proof tool. A vapor suppressing foam may be used to reduce vapors. Do not get water on spilled substances or inside containers.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Use only in a well-ventilated area.
Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Take precautionary measures against static discharges. Keep container tightly closed.
Keep away from heat, sparks and flame. Avoid ingestion and inhalation. Do not allow contact with water. Use only in a chemical fume hood. Discard contaminated shoes. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Keep under a nitrogen blanket. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Do not store in metal containers.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low. Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels.
Exposure Limits CAS# 75-54-7: 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 a chemical apron. Wear appropriate protective clothing to minimize contact with skin.
Respirators:
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use. 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 slightly yellow
Odor: Sharp, irritating and acrid odor.
pH: Not available.
Vapor Pressure: 471 hPa @ 20 deg C
Viscosity: Not available.
Boiling Point: 41 deg C @ 760.00mm Hg
Freezing/Melting Point: -93 deg C
Autoignition Temperature: 290 deg C ( 554.00 deg F)
Flash Point: -26 deg C ( -14.80 deg F)
Explosion Limits, lower: 6.0 vol %
Explosion Limits, upper: 55.0 vol %
Decomposition Temperature:
Solubility in water: decomposes
Specific Gravity/Density: 1.1050g/cm3
Molecular Formula: CH4Cl2Si
Molecular Weight: 115.04

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, light, ignition sources, metals, excess heat, exposure to moist air or water.
Incompatibilities with Other Materials:
Copper, lead oxide, potassium permanganate, oxidizing agents (strong, e.g. bromine, hydrogen peroxide, nitrogen dioxide, potassium nitrate), silver.
Hazardous Decomposition Products:
Hydrogen chloride, carbon monoxide, carbon dioxide, silicon dioxide.
Hazardous Polymerization: Will not occur.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 75-54-7: VV3500000 LD50/LC50:
CAS# 75-54-7: Draize test, rabbit, eye: 20 mg/24H Moderate; Draize test, rabbit, skin: 2 mg/24H Severe; Inhalation, rat: LC50 = 300 ppm/4H; Oral, rat: LD50 = 2830 uL/kg.
Carcinogenicity:
Dichloromethylsilane - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
  Other No information available.

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: METHYLDICHLOROSILANE
Hazard Class: 4.3 (3)
UN Number: 1242
Packing Group: I
IMO
Shipping Name: METHYLDICHLOROSILANE
Hazard Class: 4.3 (3.1)
UN Number: 1242
Packing Group: I
RID/ADR
Shipping Name: METHYLDICHLOROSILANE
Hazard Class: 4.3
UN Number: 1242
Packing group: I

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: F C
Risk Phrases:
R 11 Highly flammable.
R 14 Reacts violently with water.
R 34 Causes burns.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 25 Avoid contact with eyes.
S 33 Take precautionary measures against static
discharges.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 75-54-7: No information available.
Canada
CAS# 75-54-7 is listed on Canada's NDSL List.
CAS# 75-54-7 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 75-54-7 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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