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METHYL HYDRAZINE ICSC: 0180
Date of Peer Review: October 2004

Monomethylhydrazine
MMH
CAS # 60-34-4 CH6N2 / CH3NHNH2
RTECS # MV5600000 Molecular mass: 46.1
UN # 1244
EC #
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 Burning sensation. Cough. Nausea. Vomiting. Blue lips or finger nails. Blue skin. Dizziness. Headache. Shortness of breath. Laboured breathing. Convulsions. Symptoms may be delayed (see Notes).
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin MAY BE ABSORBED! Redness. Skin burns. Pain. (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. Shock or collapse. (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. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment.
Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.
EU Classification
UN Classification
UN Hazard Class: 6.1
UN Subsidiary Risks: 3 and 8
UN Pack Group: I
EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61GTFC-I
NFPA Code: H4; F3; R2
Fireproof. Separated from strong oxidants, strong acids, metal oxides, porous materials, food and feedstuffs. Dry. Well closed. Keep under inert gas.
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 2004

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METHYL HYDRAZINE ICSC: 0180
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS HYGROSCOPIC LIQUID, WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour mixes well with air, explosive mixtures are formed easily.

CHEMICAL DANGERS:
May explode on heating oron contact with metal oxides. The substance may ignite spontaneously on contact with air and porous materials such as earth, asbestos, wood or cloth. The substance decomposes on burning producing toxic and corrosive gases including nitrogen oxides. The substance is a strong reducing agent and reacts violently with oxidants with fire hazard. The substance is a medium strong base. It reacts violently with strong acids.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.01 ppm as TWA; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans); (ACGIH 2004).
MAK: IIb (not established but data is available); skin absorption (H); sensitization of skin (Sh); (DFG 2004).
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 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. The substance may cause effects on the central nervous system, liver and blood, resulting in liver impairment and the formation of methaemoglobin. Exposure far above the OEL 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 liver impairment and the formation of methaemoglobin. This substance is possibly carcinogenic to humans.
PHYSICAL PROPERTIES
Boiling point: 87.5C
Melting point: -52.4C
Relative density (water = 1): 0.87
Solubility in water: miscible
Vapour pressure, kPa at 20C: 4.8
Relative vapour density (air = 1): 1.6
Relative density of the vapour/air-mixture at 20C (air = 1): 1.03
Flash point: -8.3C c.c.
Auto-ignition temperature: 196C
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.
NOTES
Depending on the degree of exposure, periodic medical examination is suggested. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Do NOT take working clothes home. Rinse contaminated clothes (fire hazard) with plenty of water.
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 2004