ICSC 1483 - METHYLAMINE (40% aqueous solution)

METHYLAMINE (40% aqueous solution)	ICSC: 1483 (May 2003)
Methanamine Aminomethane Monomethylamine

CAS #: 74-89-5

UN #: 1235

EC Number: 200-820-0

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire. Vapour/air mixtures are explosive.	NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting. Use non-sparking handtools.	Use water spray, alcohol-resistant foam, dry powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

AVOID ALL CONTACT!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Burning sensation. Cough. Headache. Sore throat. Laboured breathing. Shortness of breath.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness. Pain. Serious skin burns.	Protective gloves. Protective clothing.	Rinse skin with plenty of water or shower. Refer for medical attention . Remove contaminated clothes.
Eyes	Redness. Pain. Blurred vision. Severe deep burns.	Wear 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 refer for medical attention.
Ingestion	Abdominal pain. Burning sensation. Shock or collapse.	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Ventilation. Remove all ignition sources. Collect leaking and spilled liquid in covered containers as far as possible. Cautiously neutralize remainder with dilute acid. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 3; UN Subsidiary Risks: 8; UN Pack Group: II
STORAGE
Fireproof. Cool. Well closed. Separated from food and feedstuffs, strong acids, oxidants, aluminium, copper, zinc, zinc alloys and mercury. Keep in a well-ventilated room.
PACKAGING
Do not transport with food and feedstuffs.

METHYLAMINE (40% aqueous solution)

ICSC: 1483

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS SOLUTION IN WATER WITH PUNGENT ODOUR. Physical dangers The vapour mixes well with air, explosive mixtures are easily formed. Chemical dangers Reacts violently with mercury compounds. This generates fire and explosion hazard. The substance is a medium strong base. Attacks plastics, rubber, copper, aluminium, zinc alloys and galvanized surfaces.	Formula: CH₅N / CH₃NH₂ Molecular mass: 31.1 Boiling point: 48°C Melting point: -39°C Relative density (water = 1): 0.89 Vapour pressure, kPa at 20°C: 31 Relative vapour density (air = 1): 1.08 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.02 Flash point: -10°C Auto-ignition temperature: 430°C Explosive limits, vol% in air: 4.9-20.8 Octanol/water partition coefficient as log Pow: -0.6

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS SOLUTION IN WATER WITH PUNGENT ODOUR.

Physical dangers
The vapour mixes well with air, explosive mixtures are easily formed.

Chemical dangers
Reacts violently with mercury compounds. This generates fire and explosion hazard. The substance is a medium strong base. Attacks plastics, rubber, copper, aluminium, zinc alloys and galvanized surfaces.

Formula: CH₅N / CH₃NH₂
Molecular mass: 31.1
Boiling point: 48°C
Melting point: -39°C
Relative density (water = 1): 0.89
Vapour pressure, kPa at 20°C: 31
Relative vapour density (air = 1): 1.08
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.02
Flash point: -10°C
Auto-ignition temperature: 430°C
Explosive limits, vol% in air: 4.9-20.8
Octanol/water partition coefficient as log Pow: -0.6

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation and by ingestion. Effects of short-term exposure The substance is corrosive to the eyes and skin. The vapour is severely irritating to the respiratory tract. Corrosive on ingestion.	Inhalation risk A harmful contamination of the air will be reached very quickly on evaporation of this substance at 20°C. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation and by ingestion.

Effects of short-term exposure
The substance is corrosive to the eyes and skin. The vapour is severely irritating to the respiratory tract. Corrosive on ingestion.

Inhalation risk
A harmful contamination of the air will be reached very quickly on evaporation of this substance at 20°C.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS
TLV: 5 ppm as TWA; 15 ppm as STEL. MAK: 6,4 mg/m³, 5 ppm; peak limitation category: I(2); pregnancy risk group: C

ENVIRONMENT

NOTES
See ICSC 0178 Methylamine gas in a cylinder.

ADDITIONAL INFORMATION

EC Classification
Symbol: F+, C; R: 12-20/22-34; S: (2)-3-16-26-29-36/37/39-45; Note: B

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    See Also:
       Toxicological Abbreviations