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CALCIUM CYANAMIDEICSC: 1639
Calcium carbimide
Cyanamide, calcium salt
October 2006
CAS #: 156-62-7
UN #: 1403
EC Number: 205-861-8

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible (impurities constitute a fire risk). Gives off irritating or toxic fumes (or gases) in a fire.  Risk of fire and explosion on contact with water or metals.  NO contact with water.    Use dry powder. NO carbon dioxide, foam, water.   

 STRICT HYGIENE!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Burning sensation. Sore throat. See Notes.  Use 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.  Wear safety goggles or eye protection in combination with breathing protection if powder.  Rinse with plenty of water for several minutes (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 CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Cover the spilled material with dry non-combustible inert absorbent. Sweep spilled substance into covered plastic containers. Do NOT wash away into sewer. 

According to UN GHS Criteria

excl mark;warn
WARNING
Harmful if swallowed
Causes serious eye irritation 

Transportation
UN Classification
UN Hazard Class: 4.3; UN Pack Group: III 

STORAGE
Keep in a well-ventilated room. Dry. Well closed. Separated from food and feedstuffs. 
PACKAGING
 
CALCIUM CYANAMIDE ICSC: 1639
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS CRYSTALS. 

Physical dangers
 

Chemical dangers
Decomposes under the influence of water. This produces cyanamide (see ICSC 0424), ammonia, calcium hydroxide and acetylene. This generates fire and explosion hazard. Attacks many metals. This produces flammable/explosive gas (hydrogen - see ICSC 0001). 

Formula: CN2.Ca
Molecular mass: 80.1
Decomposes when heated
Density: 2.3 g/cm³
Solubility in water: reaction 


EXPOSURE & HEALTH EFFECTS

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

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

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

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.5 mg/m3, as TWA; A4 (not classifiable as a human carcinogen).
MAK: (inhalable fraction): 1 mg/m3; peak limitation category: II(2); skin absorption (H); pregnancy risk group: C 

ENVIRONMENT
This substance may be hazardous to 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. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn; R: 22-37-41; S: (2)-22-26-36/37/39 

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    See Also:
       Toxicological Abbreviations