ICSC 0650 - DICYANDIAMIDE

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DICYANDIAMIDE	ICSC: 0650 (March 1998)
Dicyanodiamide Cyanoguanidine Dicyanediamide

CAS #: 461-58-5

EC Number: 207-312-8

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.		In case of fire in the surroundings, use appropriate extinguishing media.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
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	CLASSIFICATION & LABELLING
Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Then store and dispose of according to local regulations.	According to UN GHS Criteria Transportation UN Classification
STORAGE
Separated from strong oxidants and strong acids.
PACKAGING

DICYANDIAMIDE

ICSC: 0650

PHYSICAL & CHEMICAL INFORMATION
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.	Formula: NH₂(NH)CNHCN / C₂H₄N₄ Molecular mass: 84.1 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)

PHYSICAL & CHEMICAL INFORMATION

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.

Formula: NH₂(NH)CNHCN / C₂H₄N₄
Molecular mass: 84.1
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)

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation and by ingestion. Effects of short-term exposure	Inhalation risk Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure

Inhalation risk

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT

NOTES
In solution the substance decomposes above 80°C yielding ammonia (see ICSC 0414).

ADDITIONAL INFORMATION

EC Classification

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