ICSC 1053 - CYANOGEN CHLORIDE

CYANOGEN CHLORIDE	ICSC: 1053 (October 1999)
Chlorine cyanide Chlorocyanide Chlorocyanogen

CAS #: 506-77-4

UN #: 1589 (inhibited)

EC Number: 208-052-8

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Heating will cause rise in pressure with risk of bursting. Gives off irritating or toxic fumes (or gases) in a fire.		In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep cylinder cool by spraying with water. NO direct contact with water.

AVOID ALL CONTACT!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Sore throat. Drowsiness. Confusion. Nausea. Vomiting. Cough. Unconsciousness. Symptoms may be delayed. See Notes.	Use 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. MAY BE ABSORBED! Redness. Pain.	Cold-insulating gloves. Protective clothing.	ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention .
Eyes	ON CONTACT WITH LIQUID: FROSTBITE. 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		Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Ventilation. NEVER direct water jet on liquid. Remove vapour cloud with fine water spray. Do NOT wash away into sewer. Personal protection: chemical protection suit including self-contained breathing apparatus.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 2.3; UN Subsidiary Risks: 8
STORAGE
Fireproof if in building. Provision to contain effluent from fire extinguishing. Cool. Store in an area without drain or sewer access.
PACKAGING
Marine pollutant.

CYANOGEN CHLORIDE

ICSC: 1053

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS COMPRESSED LIQUEFIED GAS WITH PUNGENT ODOUR. Physical dangers The gas is heavier than air. Chemical dangers Decomposes on heating. This produces toxic and corrosive fumes of hydrogen cyanide, hydrochloric acid and nitrogen oxides. Reacts slowly with water and water vapour. This produces hydrogen chloride.	Formula: ClCN Molecular mass: 61.5 Boiling point: 13.8°C Melting point: -6°C Solubility in water: soluble Vapour pressure, kPa at 21.1°C: 1987 Relative vapour density (air = 1): 2.16

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS COMPRESSED LIQUEFIED GAS WITH PUNGENT ODOUR.

Physical dangers
The gas is heavier than air.

Chemical dangers
Decomposes on heating. This produces toxic and corrosive fumes of hydrogen cyanide, hydrochloric acid and nitrogen oxides. Reacts slowly with water and water vapour. This produces hydrogen chloride.

Formula: ClCN
Molecular mass: 61.5
Boiling point: 13.8°C
Melting point: -6°C
Solubility in water: soluble
Vapour pressure, kPa at 21.1°C: 1987
Relative vapour density (air = 1): 2.16

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation. Effects of short-term exposure Lachrymation. The substance is severely irritating to the eyes, skin and respiratory tract. The substance may cause effects on the cellular respiration. This may result in convulsions and unconsciousness. Exposure could cause death. Medical observation is indicated. Inhalation may cause lung oedema. See Notes. The effects may be delayed. Rapid evaporation of the liquid may cause frostbite.	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
Lachrymation. The substance is severely irritating to the eyes, skin and respiratory tract. The substance may cause effects on the cellular respiration. This may result in convulsions and unconsciousness. Exposure could cause death. Medical observation is indicated. Inhalation may cause lung oedema. See Notes. The effects may be delayed. Rapid evaporation of the liquid may cause frostbite.

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: 0.3 ppm as STEL

ENVIRONMENT
The substance is very toxic to aquatic organisms.

NOTES
The occupational exposure limit value should not be exceeded during any part of the working exposure. 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. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Do NOT spray water on a leaking cylinder (to prevent corrosion of the cylinder). Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.

NOTES

The occupational exposure limit value should not be exceeded during any part of the working exposure.
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.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Do NOT spray water on a leaking cylinder (to prevent corrosion of the cylinder).
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.

ADDITIONAL INFORMATION

EC Classification

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    See Also:
       Toxicological Abbreviations