ICSC 1721 - IMIDAZOLE

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IMIDAZOLE	ICSC: 1721 (November 2008)
1,3-Diaza-2,4-cyclopentadiene Glyoxaline 1,3-Diazole Miazole

CAS #: 288-32-4

UN #: 3263

EC Number: 206-019-2

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Finely dispersed particles form explosive mixtures in air.	NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.	Use water spray, foam, powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat. Burning sensation.	Use local exhaust or breathing protection. Avoid inhalation of dust.	Fresh air, rest. Refer for medical attention.
Skin	Redness. Pain. Serious skin burns.	Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention.
Eyes	Redness. Pain. Blurred vision. Temporary loss of vision.	Wear face shield or eye protection in combination with breathing protection if powder.	Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.
Ingestion	Sore throat. Burning sensation in the throat and chest.	Do not eat, drink, or smoke during work.	Rinse mouth. Rest. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer immediately for medical attention.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Sweep spilled substance into covered containers. Then wash away with plenty of water.	According to UN GHS Criteria DANGER Harmful if swallowed Causes severe skin burns and eye damage Suspected of damaging fertility or the unborn child Transportation UN Classification UN Hazard Class: 8; UN Pack Group: III
STORAGE
Separated from strong acids and food and feedstuffs.
PACKAGING
Do not transport with food and feedstuffs.

IMIDAZOLE

ICSC: 1721

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS-TO-YELLOW CRYSTALS WITH CHARACTERISTIC ODOUR. Physical dangers Dust explosion possible if in powder or granular form, mixed with air. Chemical dangers Decomposes on burning. This produces toxic fumes including nitrogen oxides. The solution in water is a weak base. Reacts violently with strong acids.	Formula: C₃H₄N₂ Molecular mass: 68.1 Boiling point: 268°C Melting point: 89°C Relative density (water = 1): 1.03 Solubility in water, g/100ml at 20°C: 63.3 (good) Vapour pressure, Pa at 20°C: 0.3 Relative vapour density (air = 1): 2.35 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.0 Flash point: 145°C c.c. Auto-ignition temperature: 480°C Octanol/water partition coefficient as log Pow: -0.02 Viscosity: 2.617 mm²/s at 100°C

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-YELLOW CRYSTALS WITH CHARACTERISTIC ODOUR.

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air.

Chemical dangers
Decomposes on burning. This produces toxic fumes including nitrogen oxides. The solution in water is a weak base. Reacts violently with strong acids.

Formula: C₃H₄N₂
Molecular mass: 68.1
Boiling point: 268°C
Melting point: 89°C
Relative density (water = 1): 1.03
Solubility in water, g/100ml at 20°C: 63.3 (good)
Vapour pressure, Pa at 20°C: 0.3
Relative vapour density (air = 1): 2.35
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.0
Flash point: 145°C c.c.
Auto-ignition temperature: 480°C
Octanol/water partition coefficient as log Pow: -0.02
Viscosity: 2.617 mm²/s at 100°C

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by ingestion. Effects of short-term exposure The substance is corrosive to the skin. The substance is severely irritating to the eyes. The substance is irritating to the respiratory tract.	Inhalation risk No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. Effects of long-term or repeated exposure Animal tests show that this substance possibly causes toxicity to human reproduction or development.

EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is corrosive to the skin. The substance is severely irritating to the eyes. The substance is irritating to the respiratory tract.

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C.

Effects of long-term or repeated exposure
Animal tests show that this substance possibly causes toxicity to human reproduction or development.

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT

NOTES

ADDITIONAL INFORMATION

EC Classification

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