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METHYLCHLOROSILANE ICSC: 1587
Date of Peer Review: April 2005

Chloro(methyl) silane
(cylinder)
CAS # 993-00-0 CH5ClSi
RTECS # Molecular mass: 80.6
UN # 2534
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Extremely flammable.
NO open flames, NO sparks, and NO smoking.
Alcohol-resistant foam. Dry powder. Carbon dioxide. NO water.
EXPLOSION


EXPOSURE
AVOID ALL CONTACT!

Inhalation Burning sensation. Cough. Laboured breathing. Shortness of breath. Sore throat. Symptoms may be delayed (see Notes).
Local exhaust or breathing protection.
Fresh air, rest. Half-upright position. Refer for medical attention.
Skin Redness. Pain. Skin burns.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes Pain. Redness. Severe deep burns.
Safety goggles or eye protection in combination with breathing protection. Face shield.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Abdominal pain. Burning sensation. Shock or collapse.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Remove all ignition sources. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer.
EU Classification
UN Classification
UN Hazard Class: 2.3
UN Subsidiary Risks: 2.1 and 8

EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-20G2TFC
Fireproof. Ventilation along the floor. Cool. Dry. Store in an area without drain or sewer access.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK
METHYLCHLOROSILANE ICSC: 1587
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID

CHEMICAL DANGERS:
On contact with hot surfaces or flames this substance decomposes forming toxic and corrosive fumes including hydrogen chloride and phosgene. The substance decomposes on contact with bases, forming flammable/explosive gas (hydrogen - see ICSC0001). Reacts violently with oxidants. Reacts violently with water to produce hydrogen chloride (see ICSC0163). Attacks many metals in presence of water.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established. MAK not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
A harmful contamination of the air will be reached very quickly on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated. See Notes.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Lungs may be affected by repeated or prolonged exposure. The substance may have effects on the lungs, resulting in chronic bronchitis. See Notes.
PHYSICAL PROPERTIES
Solubility in water: reaction
Vapour pressure, kPa at 20C: 18.3
Flash point: -9C
ENVIRONMENTAL DATA

NOTES
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered. Toxicology of this substance is based on Hydrogen chloride See ICSC0163.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999