METHYLCHLOROSILANE ICSC: 1587 Chloro(methyl) silane CH5ClSi Molecular mass: 80.6 (cylinder) ICSC #    1587 CAS #     993-00-0 UN #        2534 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 Storage 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. Fireproof. Ventilation along the floor. Cool. Dry. Store in an area without drain or sewer access. UN Hazard Class: 2.3 UN Subsidiary Risks: 2.1 and 8 METHYLCHLOROSILANE ICSC: 1587 Important Data Physical State; Appearance: COLOURLESS LIQUID Physical Dangers: Chemical Dangers: On contact with hot surfaces or flames this substance decomposes forming toxic and corrosive fumes including hydrogen chloride andphosgene. 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 20°C. 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 20°C: 18.3 Flash point: -9°C Environmental Data N O T E S 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. Transport Emergency Card: TEC (R)-20G2TFC ADDITIONAL INFORMATION ICSC: 1587 METHYLCHLOROSILANE (C) IPCS, CEC, 1994 IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.