METHYLAMINE (40% aqueous solution) 1483
May 2003
Methanamine
CAS No: 74-89-5
Aminomethane
RTECS No: PF6300000
Monomethylamine
UN No: 1235
CH5N / CH3NH2
EC No: 612-001-01-6
Molecular mass: 31.1
TYPES OF
ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING
HAZARD/
EXPOSURE
Highly flammable. Gives off NO open flames, NO sparks, and Water spray, alcohol-resistant
FIRE
irritating or toxic fumes (or gases) NO smoking. foam, dry powder, carbon dioxide.
in a fire.
Vapour/air mixtures are explosive. Closed system, ventilation, In case of fire: keep drums, etc.,
EXPLOSION
explosion-proof electrical equipment cool by spraying with water.
and lighting. Use non-sparking
handtools.
EXPOSURE AVOID ALL CONTACT!
Burning sensation. Cough. Ventilation, local exhaust, or Fresh air, rest. Half-upright position.
Inhalation
Headache. Sore throat. Laboured breathing protection. Artificial respiration may be needed.
breathing. Shortness of breath. Refer for medical attention.
Redness. Pain. Serious skin Protective gloves. Protective Rinse skin with plenty of water or
Skin
burns. clothing. shower. Refer for medical attention.
Remove contaminated clothes.
Redness. Pain. Blurred vision. Face shield, or eye protection in First rinse with plenty of water for
Eyes
Severe deep burns. combination with breathing several minutes (remove contact
protection. lenses if easily possible), then take
to a doctor.
Abdominal pain. Burning Do not eat, drink, or smoke during Rinse mouth. Do NOT induce
Ingestion
sensation. Shock or collapse. work. vomiting. Give plenty of water to
drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Ventilation. Remove all F+ Symbol Do not transport with food and
ignition sources. Collect leaking liquid in covered C Symbol feedstuffs.
containers. Cautiously neutralize remainder with a R: 12-20/22-34
dilute acid. Absorb remaining liquid in sand or inert S: (2-)3-16-26-29-36/37/39-45
absorbent and remove to safe place. Carefully Note: B
collect remainder, then remove to safe place. (Extra UN Hazard Class: 3
personal protection: filter respirator for organic UN Subsidiary Risks: 8
gases and vapours.) UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-30GFC-II Fireproof. Cool. Well closed. Separated from food and feedstuffs, strong
NFPA Code: H3; F4; R0 acids, oxidants, aluminium, copper, zinc and its alloys, mercury. Keep in a
well-ventilated room.
Prepared in the context of cooperation between the International
IPCS Programme on Chemical Safety and the European Commission
International 漏 IPCS 2002
Programme on
Chemical Safety SEE IMPORTANT INFORMATION ON THE BACK.
1483 METHYLAMINE (40% aqueous solution)
IMPORTANT DATA
Physical State; Appearance Routes of exposure
COLOURLESS SOLUTION IN WATER, WITH PUNGENT The substance can be absorbed into the body by inhalation and
ODOUR. by ingestion.
Physical dangers Inhalation risk
The vapour mixes well with air, explosive mixtures are formed A harmful contamination of the air will on evaporation of this
easily. substance at 20掳C be reached very quickly.
Chemical dangers Effects of short-term exposure
Reacts violently with mercury compounds causing fire and The substance is corrosive to the eyes and the skin, and the
explosion hazard. The substance is a medium strong base. vapour is severely irritating to the respiratory tract. Corrosive on
Attacks plastic, rubber, copper, aluminium, zinc alloys and ingestion.
galvanized surfaces.
Occupational exposure limits
TLV: 5 ppm as TWA; 15 ppm as STEL; (ACGIH 2003).
MAK: 10 ppm 13 mg/m3 Peak limitation category: I(1);
Pregnancy risk group: IIc; (DFG 2002).
PHYSICAL PROPERTIES
Boiling point: 48掳C Relative density of the vapour/air-mixture at 20掳C (air = 1): 1.02
Melting point: -39掳C Flash point: -10掳C
Relative density (water = 1): 0.89 Auto-ignition temperature: 430掳C
Vapour pressure, kPa at 20掳C: 31 Explosive limits, vol% in air: 4.9-20.8
Relative vapour density (air = 1): 1.08 Octanol/water partition coefficient as log Pow: -0.6
ENVIRONMENTAL DATA
NOTES
See ICSC 0178 Methylamine gas in a cylinder.
ADDITIONAL INFORMATION
Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible
LEGAL NOTICE for the use which might be made of this information
漏IPCS 2002
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