International Chemical Safety Cards

MONOMETHYLAMINE ICSC: 0178
MONOMETHYLAMINE
Methylamine
Methanamine
Aminomethane
(cylinder)
CH3NH2
Molecular mass: 31.1
CAS # 74-89-5
RTECS # PF6300000
ICSC # 0178
UN # 1061 (anhydrous)
EC # 612-001-00-9
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.
Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out; in other cases extinguish with powder, carbon dioxide.
EXPLOSION Gas/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.
In case of fire: keep cylinder cool by spraying with water.
EXPOSURE


  • INHALATION
  • Abdominal cramps. Cough. Diarrhoea. Laboured breathing. Shortness of breath. Sore throat. Vomiting.
    Ventilation, local exhaust, or breathing protection.
    Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention.
  • SKIN
  • Redness. Pain.
    Protective gloves. Protective clothing.
    Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
  • EYES
  • Redness. Pain.
    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 (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! Ventilation. Do NOT wash away into sewer. Remove with fine water spray (extra personal protection: complete protective clothing including self-contained breathing apparatus).
    Fireproof. Separated from incompatible materials (see Chemical Dangers). Cool.

    F symbol
    Xi symbol
    R: 13-36/37
    S: 16-26-29
    Note: C
    UN Haz Class: 2.1
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0178 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

    MONOMETHYLAMINE ICSC: 0178

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    PHYSICAL STATE; APPEARANCE:
    COLOURLESS COMPRESSED LIQUEFIED GAS , WITH CHARACTERISTIC ODOUR.

    PHYSICAL DANGERS:
    The gas is heavier than air and may travel along the ground; distant ignition possible.

    CHEMICAL DANGERS:
    The substance decomposes on burning producing toxic fumes (nitrogen oxides). The substance is a medium strong base. Reacts violently with mercury causing fire and explosion hazard. Reacts violently with strong oxidants, such as chlorine.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
    TLV (as TWA): 10 ppm; 13 mg/m3 (ACGIH 1992-1993).
    MAK: 10 ppm; 12 mg/m3; (1992).


    ROUTES OF EXPOSURE:
    The substance can be absorbed into the body by inhalation and through the skin, and by ingestion.

    INHALATION RISK:
    A harmful concentration of this gas in the air will be reached very quickly on loss of containment.

    EFFECTS OF SHORT-TERM EXPOSURE:
    The substance irritates 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:
    Repeated or prolonged contact with skin may cause dermatitis.
    PHYSICAL
    PROPERTIES
    Boiling point: -6C
    Melting point: -94C
    Relative density (water = 1): 0.66
    Solubility in water, g/100 ml at 20C: 108
    Vapour pressure, kPa at 20C: 290
    Relative vapour density (air = 1): 1.07
    Flash point: Flammable Gas
    Auto-ignition temperature: 430C
    Explosive limits, vol% in air: 4.9-20.7
    Octanol/water partition coefficient as log Pow: -0.71
    ENVIRONMENTAL
    DATA
    This substance may be hazardous to the environment; special attention should be given to fish.
    NOTES
    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. The odour warning when the exposure limit value is exceeded is insufficient. Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
    Transport Emergency Card: TEC (R)-20G12
    NFPA Code: H 3; F 4; R 0;
    ADDITIONAL INFORMATION


    ICSC: 0178 MONOMETHYLAMINE
    © 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.