International Chemical Safety Cards METHYL HYDRAZINE ICSC: 0180 METHYL HYDRAZINE Monomethylhydrazine Hydrazomethane 1-Methylhydrazine MMH CH6N2/CH3NHNH2 Molecular mass: 46.1 CAS # 60-34-4 RTECS # MV5600000 ICSC # 0180 UN # 1244 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Highly flammable. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames, NO sparks, and NO smoking. NO contact with strong oxidants. NO contact with hot surfaces. Powder, alcohol-resistant foam, water in large amounts, carbon dioxide. EXPLOSION Vapour/air mixtures are explosive. Risk of fire and explosion on contact with oxidants and metal oxides. Closed system, ventilation, explosion-proof electrical equipment and lighting. In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. EXPOSURE AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! INHALATION Blue lips or finger nails. Blue skin. Burning sensation. Convulsions. Cough. Dizziness. Headache. Laboured breathing. Nausea. Vomiting. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention. SKIN MAY BE ABSORBED! Redness. Pain. Blisters (further see Inhalation). Protective gloves. Protective clothing. First rinse with plenty of water, then remove contaminated clothes and rinse again. Refer for medical attention. EYES Redness. Pain. 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. Burning sensation. Weakness (further see Inhalation). Do not eat, drink, or smoke during work. Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT absorb in saw-dust or other combustible absorbents. Do NOT let this chemical enter the environment (extra personal protection: complete protective clothing including self-contained breathing apparatus). Fireproof. Separated from strong oxidants, strong acids, food and feedstuffs, metal oxides and porous materials. Dry. Well closed. Keep under inert gas. Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. UN Hazard Class: 6.1 UN Subsidiary Risks: 3 and 8 UN Packing Group: I SEE IMPORTANT INFORMATION ON BACK ICSC: 0180 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 METHYL HYDRAZINE ICSC: 0180 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS HYGROSCOPIC LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The vapour mixes well with air, explosive mixtures are easily formed. CHEMICAL DANGERS: May explode on heating or in contact with metal oxides. The substance may spontaneously ignite on contact with air and porous materials such as earth, asbestos, wood or cloth. The substance decomposes on heating or on burning producing toxic and irritating fumes including nitrogen oxides. The substance is a strong reducing agent and reacts violently with oxidants with fire hazards. The substance is a medium strong base which reacts violently with strong acids. OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV (as Ceiling limit): 0.2 ppm; 0.38 mg/m3 A2 (skin) (ACGIH 1994-1995). OSHA PEL: C 0.2 ppm (0.35 mg/m3) skin NIOSH REL: Ca C 0.04 ppm (0.08 mg/m3) 2-hr See Appendix A NIOSH IDLH: Potential occupational carcinogen 20 ppm ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour, 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: Corrosive. The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of this substance may cause lung oedema (see Notes). The substance may cause effects on the central nervous system, liver and blood , resulting in convulsions and formation of methaemoglobin. Exposure at high concentrations may result in death. The effects may be delayed. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the liver and blood , resulting in formation of methaemoglobin. This substance is possibly carcinogenic to humans. PHYSICAL PROPERTIES Boiling point: 87.5°C Melting point: -52.4°C Relative density (water = 1): 0.87 Solubility in water: miscible Vapour pressure, kPa at 20°C: 4.8 Relative vapour density (air = 1): 1.6 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.03 Flash point: -8.3°C c.c. Auto-ignition temperature: 194°C Explosive limits, vol% in air: 2.5-97 Octanol/water partition coefficient as log Pow: -1.05 ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. N O T E S The occupational exposure limit value should not be exceeded during any part of the working exposure. 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. Immediate administration of an appropriate spray, by a doctor or a person authorized by him/her, should be considered. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Rinse contaminated clothes (fire hazard) with plenty of water. Transport Emergency Card: TEC (R)-30G31 NFPA Code: H3; F3; R2 ADDITIONAL INFORMATION ICSC: 0180 METHYL HYDRAZINE © 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.