ICSC 0671 - POTASSIUM CYANIDE

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POTASSIUM CYANIDE	ICSC: 0671 (May 2018)
Hydrocyanic acid, potassium salt

CAS #: 151-50-8

UN #: 1680

EC Number: 205-792-3

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible but forms flammable gas on contact with water or damp air. Gives off irritating or toxic fumes (or gases) in a fire.		NO hydrous agents. NO water. NO carbon dioxide. In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep drums, etc., cool by spraying with water.

AVOID ALL CONTACT! FIRST AID: USE PERSONAL PROTECTION.
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Nausea. Dizziness. Drowsiness. Sore throat. Headache. Confusion. Weakness. Shortness of breath. Convulsions. Unconsciousness.	Use local exhaust or breathing protection.	Administration of oxygen may be needed. Fresh air, rest. No mouth-to-mouth artificial respiration. Refer immediately for medical attention.
Skin	MAY BE ABSORBED! Redness. Pain. Further see Inhalation.	Protective gloves. Protective clothing.	Wear protective gloves when administering first aid. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention . See Notes.
Eyes	Redness. Pain. Further see Inhalation.	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	Burning sensation. Nausea. Vomiting. Diarrhoea. See Inhalation.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Administration of oxygen may be needed. NO mouth-to-mouth artificial respiration. Do NOT induce vomiting. Refer immediately for medical attention.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Ventilation. Sweep spilled substance into covered dry, sealable, labelled containers. Cautiously neutralize remainder with sodium hypochlorite solution.	According to UN GHS Criteria Fatal if swallowed, in contact with skin or if inhaled Causes skin and eye irritation Very toxic to aquatic life with long lasting effects Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: I
STORAGE
Separated from strong oxidants, acids, food and feedstuffs, carbon dioxide and products containing water. Dry. Well closed. Keep in a well-ventilated room. Store in an area without drain or sewer access.
PACKAGING
Airtight. Unbreakable packaging. Put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. Marine pollutant.

POTASSIUM CYANIDE

ICSC: 0671

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance HYGROSCOPIC CRYSTALS OR SOLID IN VARIOUS FORMS WITH CHARACTERISTIC ODOUR. ODOURLESS WHEN DRY. Physical dangers Chemical dangers Decomposes rapidly on contact with acids. Decomposes slowly on contact with water or moisture. This produces hydrogen cyanide (see ICSC 0492). This generates toxic hazard. The solution in water is a medium strong base.	Formula: KCN Molecular mass: 65.1 Boiling point: 1625°C Melting point: 634°C Density: 1.52 g/cm³ Solubility in water, g/l at 25°C: 716 (freely soluble)

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
HYGROSCOPIC CRYSTALS OR SOLID IN VARIOUS FORMS WITH CHARACTERISTIC ODOUR. ODOURLESS WHEN DRY.

Physical dangers

Chemical dangers
Decomposes rapidly on contact with acids. Decomposes slowly on contact with water or moisture. This produces hydrogen cyanide (see ICSC 0492). This generates toxic hazard. The solution in water is a medium strong base.

Formula: KCN
Molecular mass: 65.1
Boiling point: 1625°C
Melting point: 634°C
Density: 1.52 g/cm³
Solubility in water, g/l at 25°C: 716 (freely soluble)

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation, through the skin and by ingestion. Effects of short-term exposure 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. See Notes.	Inhalation risk A harmful concentration of airborne particles can be reached quickly when dispersed. Effects of long-term or repeated exposure The substance may have effects on the thyroid.

EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
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. See Notes.

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed.

Effects of long-term or repeated exposure
The substance may have effects on the thyroid.

OCCUPATIONAL EXPOSURE LIMITS
TLV: (ceiling value): 5 mg/m³ as STEL; (skin). EU-OEL: 1 mg/m³ as TWA; 5 mg/m³ as STEL; (skin)

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. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Isolate contaminated clothing by sealing in a bag or other container. Do NOT take working clothes home. Never work alone in an area if hydrogen cyanide exposure is possible. Depending on the degree of exposure, periodic medical examination is suggested.

NOTES

The occupational exposure limit value should not be exceeded during any part of the working exposure.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Isolate contaminated clothing by sealing in a bag or other container.
Do NOT take working clothes home.
Never work alone in an area if hydrogen cyanide exposure is possible.
Depending on the degree of exposure, periodic medical examination is suggested.

ADDITIONAL INFORMATION

Pas de VLEP française.
CLP00 : "sels de cyanures d'hydrogène à l'exception de ceux nommément désignés dans l'annexe" (n°Index : 006-007-00-5) : H300; H310; H330; H400; H410; EUH032. EC Classification

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