Calcium carbide
CAS No.: 75-20-7
UN NO. :1402
Class :4.3
HS Code:28491000
Calcium carbide, also known as calcium acetylide, is a chemical compound with the chemical formula of CaC2. Its main use industrially is in the production of acetylene and calcium cyanamide.
The pure material is colorless, however pieces of technical-grade carbide are grey or brown and consist of about 80¨C85% of CaC2 (the rest is CaO (calcium oxide), Ca3P2 (calcium phosphide), CaS (calcium sulfide), Ca3N2 (calcium nitride), SiC (silicon carbide), etc.). In the presence of trace moisture, technical-grade carbide emits an unpleasant odor reminiscent of garlic.
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Item |
Top |
General |
Acceptable |
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20¡ãC 101.3 Kpa L/kg Gas Yield ¡İ |
300 |
280 |
260 |
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PH3 %(V/V) ¡Ü |
0.06 |
0.08 | |
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H2S %(V/V) ¡Ü |
0.10 | ||
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Size percentage (5mm-80mm) ¡İ |
85 | ||
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Stifage percentage below 2.5mm ¡Ü |
5 | ||
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China National Standard |
GB10665-2004 | ||
Cautions during transportion:
The packing must be kept in good condition and the goods should be stored in a dry,cool and ventilated place.It should be separate from the cargo can burn and acid.It should avoid meeting water and moisture.It should give off the acetylene in iron drum before storing in warehouse. Rolling drums,heavy putting down and colliding are not allowed to avoid the spark leads to explosion.
