International Chemical Safety Cards DICHLOROMETHANE ICSC: 0058 DICHLOROMETHANE Methylene chloride DCM CH2Cl2 Molecular mass: 84.9 CAS # 75-09-2 RTECS # PA8050000 ICSC # 0058 UN # 1593 EC # 602-004-00-3 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible under specific conditions. Gives off irritating or toxic fumes (or gases) in a fire. In case of fire in the surroundings: all extinguishing agents allowed. EXPLOSION Risk of fire and explosion (see Chemical Dangers). In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE AVOID ALL CONTACT! INHALATION Dizziness. Drowsiness. Headache. Nausea. Unconsciousness. Weakness. death. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Artificial respiration if indicated. Refer for medical attention. SKIN Dry skin. Redness. Burning sensation. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. EYES Redness. Pain. Severe deep burns. Safety goggles, 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 pain (further see Inhalation). Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Rest. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT let this chemical enter the environment (extra personal protection: complete protective clothing including self-contained breathing apparatus). Separated from metals (see Chemical Dangers), food and feedstuffs. Cool. Ventilation along the floor. Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. Xn symbol R: 40 S: 23-24/25-36/37 UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 0058 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993 No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and IDLH values.

International Chemical Safety Cards DICHLOROMETHANE ICSC: 0058 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. As a result of flow, agitation, etc., electrostatic charges can be generated. CHEMICAL DANGERS: On contact with hot surfaces or flames this substance decomposes forming toxic and corrosive fumes. Reacts violently with metals such as aluminium, magnesium, sodium, potassium, lithium, strong bases and oxidants, causing fire and explosion hazard. Attacks some forms of plastics, rubber and coatings. OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV: 50 ppm; 174 mg/m3 (ACGIH 1992-1993). OSHA PEL: TWA 25 ppm ST 125 ppm NIOSH REL: Ca See Appendix A NIOSH IDLH: Potential occupational carcinogen 2300 ppm ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation, through the skin and by ingestion. INHALATION RISK: A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the eyes, the skin and the respiratory tract. Swallowing the liquid may cause aspiration into the lungs with the risk of chemical pneumonitis. The substance may cause effects on the blood , resulting in formation of methaemoglobin. Exposure could cause lowering of consciousness. Exposure could cause formation of carboxyhaemoglobin. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the central nervous system and liver , resulting in degenerative brain disease and enlargement of the liver. This substance is possibly carcinogenic to humans. PHYSICAL PROPERTIES Boiling point: 40°C Melting point: -95.1°C Relative density (water = 1): 1.3 Solubility in water, g/100 ml at 20°C: 1.3 Vapour pressure, kPa at 20°C: 47.4 Relative vapour density (air = 1): 2.9 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.9 Auto-ignition temperature: 640°C Explosive limits, vol% in air: 14-25% Octanol/water partition coefficient as log Pow: 1.25 ENVIRONMENTAL DATA This substance may be hazardous to the environment; special attention should be given to water organisms. NOTES According to ACGIH this substance belongs to group A2 indicating suspected human carcinogen. Smoking has an additive effect on carbon monoxide formation in blood. Combustible vapour/air mixtures difficult to ignite, may be developed under certain conditions. Addition of small amounts of a flammable substance or an increase in the oxygen content of the air strongly enhances combustibility. Use of alcoholic beverages enhances the harmful effect. Depending on the degree of exposure, periodic medical examination is indicated. The odour warning when the exposure limit value is exceeded is insufficient. Do NOT use in the vicinity of a fire or a hot surface, or during welding. Transport Emergency Card: TEC (R)-720 NFPA Code: H2; F1; R0; ADDITIONAL INFORMATION ICSC: 0058 DICHLOROMETHANE © IPCS, CEC, 1993

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 IDLH values.