Calcium Carbide

Identification of the substance or preparation
Product name: CALCIUM CARBIDE
Chemical formula: CaC2
CAS No.: 75-20-7
EINECS: 200-848-3

Hazards identification
  Cabide is a strong hygroscopic substance and is decomposed already in   
  the air. Through reaction with the water arises acetylene. Acetylene is 
  an explosive gas. Lower explosion limit is 1.5 % vol., upper explosion 
  limit is 80.5 % vol. Acetylene is a combustible gas with flash point of 
  305 C, with temperature class T 2, explosion group II.C. Impurities in 
  carbidic acetylene can show themselves toxic - PH3, H2S. Taking 
  concentration of calcium oxide (16.5%) in concideration, it has toxic 
  effects on the eyes and respiratory tract.
  Attention is required before the opening of drum leakage of inerting gas acetylene with nitrogen injected into the holes of the  caps Warning during drums decanting boundary carbide is required inerting with nitrogen inlet valve from the continuous
 flow during decanting

Physical and chemical properties
  Physical properties, form, colour, odour: Powder or granules of violet-
    black colour (0-80 mm). Odour like garlic similar to acetylene.
  pH-value: basic
  Change in condition:
     Boiling point: 2300 C (101,3 kPa)
 Melting point: 1900 C
     Decomposition temperature: Not applicable.
  Flash point: acetylene - 305 C
  Flammability: acetylene - 17,8 C
  Autoflammability: none
  Danger of explosion: Forming of explosive compounds (acetylene - air) 
    in contact with water.
  Explosion limits:
 Lower: 1.5 % vol. of acetylene
Upper: 80.5 % vol. of acetylene
  Oxidizing properties: not applicable
  Vapour pressure: 0,1 kPa (20 C)
 Specific weight: (20 C) 2,2 - 2,7 g.cm 
 Solubility in/ miscibility with: -
 Distribution coefficient: not applicable
 Dynamic viscosity: not applicable