ICSC 1639 - CALCIUM CYANAMIDE

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CALCIUM CYANAMIDE

ICSC: 1639
_{October 2006}

Calcium carbimide
Cyanamide, calcium salt

CAS No: 156-62-7
RTECS No: GS6000000
UN No: 1403
EC No: 615-017-00-4

CN₂.Ca
Molecular mass: 80.1

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Not combustible (impurities constitute a fire risk). Gives off irritating or toxic fumes (or gases) in a fire.	NO contact with water.	Dry powder. NO carbon dioxide, foam or water.
EXPLOSION	Risk of fire and explosion on contact with water or metals.

EXPOSURE		STRICT HYGIENE!
Inhalation	Cough. Burning sensation. Sore throat. See Notes.	Local exhaust or breathing protection.	Fresh air, rest.
Skin	Redness.	Protective gloves.	Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain.	Safety goggles or eye protection in combination with breathing protection if powder.	First rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.
Ingestion	Sore throat. Burning sensation in the throat and chest. Abdominal pain. See NOTES.	Do not eat, drink, or smoke during work.	Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Personal protection: P2 filter respirator for harmful particles. Cover the spilled material with non-combustible inert dry absorbent. Sweep spilled substance into covered, plastic containers. Do NOT wash away into sewer.	EU classification Xn Symbol R: 22-37-41 S: (2-)22-26-36/37/39 UN classification UN Hazard Class: 4.3 UN Pack Group: III GHS classification Signal: Warning Excl mark Harmful if swallowed Causes serious eye irritation

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-43GW2-II+III. NFPA Code: H-; F3; R1; W	Keep in a well-ventilated room. Dry. Well closed. Separated from food and feedstuffs.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS CRYSTALS

Chemical dangers
The substance decomposes under the influence of water producing cyanamide (see ICSC0424), ammonia, calcium hydroxide and acetylene, causing fire and explosion hazard. Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001).

Occupational exposure limits
TLV: 0.5 mg/m³ (ACGIH 2005). MAK: (Inhalable fraction) 1 mg/m³; Peak limitation category: II(2); skin absorption (H); Pregnancy risk group: C (DFG 2007).

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

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

Effects of short-term exposure
The substance is severely irritating to the eyes and the respiratory tract.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Decomposes when heated Density: 2.3 g/cm³ Solubility in water: reaction	This substance may be hazardous in the environment; special attention should be given to aquatic organisms.

NOTES

In combination with even small amounts of alcohol the substance causes effects on cardiovascular and central nervous systems resulting in flushing, palpitation, hypotension and hyperventilation. The effects may be delayed. Commercial calcium cyanamide is a crystalline substance which contains trace amounts of calcium carbide which may produce acetylene in production vessels or containers.
Reacts violently with fire extinguishing agents such as water.
UN 1403: Calcium Cyanamide with more than 0.1% calcium carbide.
Card has been partially updated in January 2008: see Occupational Exposure Limits.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2006

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Updated by AS. Approved by GS. Last update: 29.01.2008