International Chemical Safety Cards CHLOROMETHYL METHYL ETHER ICSC: 0238 CHLOROMETHYL METHYL ETHER Dimethylchloroether Chloromethoxymethane CH3OCH2CI Molecular mass: 80.5 CAS # 107-30-2 RTECS # KN6650000 ICSC # 0238 UN # 1239 EC # 603-075-00-3 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Extremely flammable. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames, NO sparks, and NO smoking. Powder, alcohol-resistant foam, water in large amounts, carbon dioxide. Water may be ineffective. EXPLOSION Vapour/air mixtures are explosive. Closed system, ventilation, explosion-proof electrical equipment and lighting. In case of fire: keep drums, etc., cool by spraying with water.   EXPOSURE PREVENT GENERATION OF MISTS! AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! INHALATION Burning sensation. Cough. Dizziness. Headache. Laboured breathing. Nausea. Sore throat. Closed system and ventilation. Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention. SKIN Redness. Skin burns. Pain. Blisters. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention. EYES Redness. Pain. Blurred vision. Loss of vision. Severe deep burns. Face shield or eye protection in combination with breathing protection. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor. INGESTION Abdominal cramps. Vomiting (further see Inhalation). 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! Ventilation. 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 (extra personal protection: complete protective clothing including self-contained breathing apparatus). Fireproof. Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. F symbol T symbol R: 45-11-20/21/22 S: 53-9-16-44 UN Hazard Class: 6.1 UN Subsidiary Risks: 3 UN Packing Group: I SEE IMPORTANT INFORMATION ON BACK ICSC: 0238 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards CHLOROMETHYL METHYL ETHER ICSC: 0238 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The vapour is heavier than air and may travel along the ground; distant ignition possible. CHEMICAL DANGERS: On combustion, forms toxic gases and vapours (phosgene - see ICSC # 0007 and hydrogen chloride - see ICSC # 0163). The substance decomposes on contact with water producing hydrogen chloride and formaldehyde (see ICSC # 0275). Attacks many metals in presence of water. OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour. INHALATION RISK: A harmful contamination of the air can be reached rather 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. Inhalation of the substance may cause lung oedema (see Notes). EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Lungs may be affected by repeated or prolonged exposure. This substance is carcinogenic to humans. PHYSICAL PROPERTIES Boiling point: 59°C Melting point: -104°C Relative density (water = 1): 1.06 Solubility in water: decomposes Vapour pressure, kPa at 20°C: about 25.3 Relative vapour density (air = 1): 2.8 Relative density of the vapour/air-mixture at 20°C (air = 1): About 1.4 Flash point: -17.8°C Auto-ignition temperature: see Notes Explosive limits, vol% in air: see Notes

ENVIRONMENTAL DATA
NOTES
ACGIH classified this substance as A2 (suspected human carcinogen). The auto-ignition temperature is unknown in literature. Explosive limits are unknown in literature. 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 are therefore essential. Do NOT use in the vicinity of a fire or a hot surface, or during welding. Check for peroxides prior to distillation; render harmless if positive. Transport Emergency Card: TEC (R)-30G32

ADDITIONAL INFORMATION
ICSC: 0238 CHLOROMETHYL METHYL ETHER © IPCS, CEC, 1993

IMPORTANT LEGAL NOTICE: Neither the CEC or 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. 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.