ICSC 0206 - TRIMETHYLAMINE

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TRIMETHYLAMINE	ICSC: 0206 (October 2002)
N,N-Dimethylmethanamine TMA

CAS #: 75-50-3

UN #: 1083 (anhydrous)

EC Number: 200-875-0

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Extremely flammable. Gives off irritating or toxic fumes (or gases) in a fire. Gas/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.	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. In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.

STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Burning sensation. Cough. Headache. Sore throat. Laboured breathing. Shortness of breath. Symptoms may be delayed. See Notes.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin	ON CONTACT WITH LIQUID: FROSTBITE.	Cold-insulating gloves. Protective clothing.	ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention .
Eyes	Redness. Pain. Blurred vision.	Wear safety goggles 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		Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Remove all ignition sources. NEVER direct water jet on liquid. Remove vapour with fine water spray.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 2.1
STORAGE
Fireproof. Cool.
PACKAGING

TRIMETHYLAMINE

ICSC: 0206

PHYSICAL & CHEMICAL INFORMATION
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 Decomposes on burning. This produces toxic fumes including nitrogen oxides. The solution in water is a strong base. It reacts violently with acid and is corrosive. Reacts violently with oxidants and ethylene oxide. Attacks metals such as copper, zinc, aluminium, tin and their alloys.	Formula: C₃H₉N / (CH₃)₃N Molecular mass: 59.1 Boiling point: 3°C Melting point: -117°C Relative density (water = 1): 0.6 (liquid) Solubility in water: very good Vapour pressure, kPa at 20°C: 187 Relative vapour density (air = 1): 2 Flash point: Flammable gas Auto-ignition temperature: 190°C Explosive limits, vol% in air: 2.0-11.6 Octanol/water partition coefficient as log Pow: 0.2

PHYSICAL & CHEMICAL INFORMATION

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
Decomposes on burning. This produces toxic fumes including nitrogen oxides. The solution in water is a strong base. It reacts violently with acid and is corrosive. Reacts violently with oxidants and ethylene oxide. Attacks metals such as copper, zinc, aluminium, tin and their alloys.

Formula: C₃H₉N / (CH₃)₃N
Molecular mass: 59.1
Boiling point: 3°C
Melting point: -117°C
Relative density (water = 1): 0.6 (liquid)
Solubility in water: very good
Vapour pressure, kPa at 20°C: 187
Relative vapour density (air = 1): 2
Flash point: Flammable gas
Auto-ignition temperature: 190°C
Explosive limits, vol% in air: 2.0-11.6
Octanol/water partition coefficient as log Pow: 0.2

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation. Effects of short-term exposure The substance is severely irritating to the eyes and respiratory tract. Rapid evaporation of the liquid may cause frostbite. Inhalation may cause lung oedema. See Notes. The effects may be delayed. Medical observation is indicated.	Inhalation risk A harmful concentration of this gas in the air will be reached very quickly on loss of containment. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is severely irritating to the eyes and respiratory tract. Rapid evaporation of the liquid may cause frostbite. Inhalation may cause lung oedema. See Notes. The effects may be delayed. Medical observation is indicated.

Inhalation risk
A harmful concentration of this gas in the air will be reached very quickly on loss of containment.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS
TLV: 5 ppm as TWA; 15 ppm as STEL. MAK: 4.9 mg/m³, 2 ppm; peak limitation category: I(2); pregnancy risk group: C. EU-OEL: 4,9 mg/m³, 2 ppm as TWA; 12,5 mg/m³, 5 ppm as STEL

ENVIRONMENT

NOTES
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. 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 inhalation therapy by a doctor, or by an authorized person, should be considered.

ADDITIONAL INFORMATION

EC Classification
Symbol: F+, Xn; R: 12-20-37/38-41; S: (2)-16-26-39

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