ICSC 1390 - CYANOGEN

« back to the search result list

CYANOGEN	ICSC: 1390 (October 2001)
Dicyanogen Ethanedinitrile Oxalonitrile

CAS #: 460-19-5

UN #: 1026

EC Number: 207-306-5

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire. Gas/air mixtures are explosive. Risk of fire and explosion on contact with strong oxidizing agents.	NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting.	Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with dry powder, carbon dioxide. In case of fire: keep cylinder cool by spraying with water.

AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Convulsions. Cough. Dizziness. Headache. Laboured breathing. Sore throat. Unconsciousness. Vomiting.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. No mouth-to-mouth artificial respiration. Refer for medical attention. See Notes.
Skin	ON CONTACT WITH LIQUID: FROSTBITE.	Cold-insulating gloves.	ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention .
Eyes	Redness. Pain.	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

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus. Ventilation. Remove all ignition sources. NEVER direct water jet on liquid.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 2.3; UN Subsidiary Risks: 2.1
STORAGE
Fireproof. Cool.
PACKAGING

CYANOGEN

ICSC: 1390

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS GAS OR 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 On combustion, forms toxic gases including hydrogen cyanide, carbon monoxide and nitrogen oxides. Reacts with strong oxidants. This generates fire and explosion hazard. Reacts with acids. This produces highly toxic gases such as hydrogen cyanide.	Formula: C₂N₂ Molecular mass: 52.04 Boiling point: -21.2°C Melting point: -27.9°C Relative density (water = 1): 0.95 (-21°C) Solubility in water, ml/100ml at 20°C: 450 Relative vapour density (air = 1): 1.8 Flash point: Flammable gas Explosive limits, vol% in air: 6.6-42.6 Octanol/water partition coefficient as log Pow: 0.07

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS GAS OR 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
On combustion, forms toxic gases including hydrogen cyanide, carbon monoxide and nitrogen oxides. Reacts with strong oxidants. This generates fire and explosion hazard. Reacts with acids. This produces highly toxic gases such as hydrogen cyanide.

Formula: C₂N₂
Molecular mass: 52.04
Boiling point: -21.2°C
Melting point: -27.9°C
Relative density (water = 1): 0.95 (-21°C)
Solubility in water, ml/100ml at 20°C: 450
Relative vapour density (air = 1): 1.8
Flash point: Flammable gas
Explosive limits, vol% in air: 6.6-42.6
Octanol/water partition coefficient as log Pow: 0.07

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation. Effects of short-term exposure The substance is irritating to the eyes and respiratory tract. Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the central nervous system. This may result in respiratory failure and collapse. Exposure far above the OEL could cause death.	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 irritating to the eyes and respiratory tract. Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the central nervous system. This may result in respiratory failure and collapse. Exposure far above the OEL could cause death.

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 STEL. MAK: 11 mg/m³, 5 ppm; peak limitation category: II(2); skin absorption (H); pregnancy risk group: D

ENVIRONMENT
The substance is very toxic to aquatic organisms.

NOTES
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. 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.

ADDITIONAL INFORMATION

EC Classification
Symbol: F, T, N; R: 11-23-50/53; S: (1/2)-23-45-60-61

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.