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DICYANDIAMIDE ICSC: 0650
Date of Peer Review: March 1998

Dicyanodiamide
Cyanoguanidine
Dicyanediamide
CAS # 461-58-5 NH2(NH)CNHCN / C2H4N4
RTECS # ME9950000 Molecular mass: 84.1
UN #
EC Index #
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
Local exhaust.
Fresh air, rest.
Skin
Protective gloves.
Rinse skin with plenty of water or shower.
Eyes
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion

Rinse mouth. Give plenty of water to drink.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting, then remove to safe place.
EU Classification
UN Classification

EMERGENCY RESPONSE STORAGE

Separated from strong oxidants, strong acids.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
DICYANDIAMIDE ICSC: 0650
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
WHITE CRYSTALLINE POWDER.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic gases including ammonia - see ICSC 0414. Reacts violently with strong oxidants, such as ammonium nitrate causing fire and explosion hazard. Reacts with acids to produce toxic gases including hydrogen cyanide. See ICSC 0492.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK: IIb (not established but data is available) (DFG 2005).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and by ingestion.

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

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


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005