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SODIUM THIOCYANATE
ICSC: 0675
Peer-Review Status: 28.10.2004 Validated
Thiocyanic acid, sodium salt
Sodium sulfocyanate
Sodium rhodanide 
CAS #: 540-72-7 RTECS #: XL2275000
EC #: 615-004-00-3
EINECS #: 208-754-4
    Formula: NaSCN
Molecular mass: 81.1

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.    In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION      
 
EXPOSURE   PREVENT DISPERSION OF DUST!   
Inhalation Cough. Further see Ingestion.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes   Wear safety goggles 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 Nausea. Vomiting. Diarrhoea. Weakness. Confusion. Convulsions.  Do not eat, drink, or smoke during work.  Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Sweep spilled substance into covered containers. Carefully collect remainder. Personal protection: particulate filter respirator adapted to the airborne concentration of the substance.   
EC Classification
Symbol: Xn; R: 20/21/22-32-52/53; S: (2)-13-61; Note: A 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H3; F0; R1.  Separated from acids, bases, oxidants and food and feedstuffs. Dry. Well closed. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS HYGROSCOPIC CRYSTALS OR WHITE POWDER. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces toxic fumes including sulfur oxides, nitrogen oxides, sodium oxide and cyanides. Reacts violently with acids, strong bases and strong oxidants. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

Routes of exposure
 

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

Effects of short-term exposure
The substance may cause effects on the central nervous system. This may result in excitement and convulsions. 

Effects of long-term or repeated exposure
The substance may have effects on the central nervous system and thyroid. This may result in impaired functions and hypothyroidism. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at 368°C
Melting point: ~300°C
Density: 1.7 g/cm³
Solubility in water, g/100ml at 21°C: 139  
 

NOTES
 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.
    See Also:
       Toxicological Abbreviations
       SODIUM THIOCYANATE (JECFA Evaluation)