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DICYANDIAMIDE
ICSC: 0650
Peer-Review Status: 26.03.1998 Validated
Dicyanodiamide
Cyanoguanidine
Dicyanediamide 
CAS #: 461-58-5 RTECS #: ME9950000
EINECS #: 207-312-8
 		    Formula: NH2(NH)CNHCN / C2H4N4
Molecular mass: 84.1

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   Use local exhaust.  Fresh air, rest. 
Skin   Protective gloves.  Rinse skin with plenty of water or shower. 
Eyes   Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion     Rinse mouth. Give one or two glasses of water to drink. 

SPILLAGE DISPOSAL
 		PACKAGING & LABELLING
Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Then store and dispose of according to local regulations.   
EC Classification
 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
  Separated from strong oxidants and strong acids. 

IMPORTANT DATA
Physical State; Appearance
WHITE CRYSTALLINE POWDER. 

Physical dangers
No data. 

Chemical dangers
Decomposes on heating. This produces toxic gases including ammonia (see ICSC 0414). Reacts violently with strong oxidants such as ammonium nitrate. This generates fire and explosion hazard. Reacts with acids. This produces toxic gases including hydrogen cyanide. See ICSC 0492. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

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

Inhalation risk
 

Effects of short-term exposure
 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Melting point: 211°C
Density: 1.4 g/cm³
Solubility in water, g/100ml at 25°C: 4.13
Octanol/water partition coefficient as log Pow: -1.5 (estimated)  		 

NOTES
In solution the substance decomposes above 80°C yielding ammonia (see ICSC 0414).
Card has been partly updated in October 2005.
See section Occupational Exposure Limits. 

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
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    See Also:
       Toxicological Abbreviations