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POTASSIUM CYANIDEICSC: 0671
Hydrocyanic acid, potassium saltMay 2018
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

skull;toxicenviro;aqua
DANGER
Fatal if swallowed, in contact with skin or if inhaled
Causes skin and eye irritation
Very toxic to aquatic life
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) 


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. 

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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       Toxicological Abbreviations