What Is Calcium Carbide?
Calcium carbide, the main component of calcium carbide, is an inorganic compound, white crystals, industrial products are gray-black blocks, and the section is purple or gray. It immediately reacts violently with water, generates acetylene, and releases heat. Calcium carbide is an important basic chemical raw material, mainly used to produce acetylene gas. Also used in organic synthesis, oxyacetylene welding, etc.
- Reaction principle: CaC 2 + 2H 2 O == Ca (OH) 2 + C 2 H 2
- This is an exothermic reaction, H = -120kJ / mol, so it needs to be reacted with saturated saline to control the reaction rate. [3]
- Reaction equation: CaO + 3C CaC 2 + CO, H = + 465.7kJ / mol
- This is a strongly endothermic reaction, so it needs to be performed in an electric furnace of 2100-2500K. [2]
- Store in a cool, dry, well-ventilated warehouse. Keep away from fire and heat sources. The relative humidity is kept below 75%. The packaging must be sealed and protected from moisture. It should be stored separately from acids and alcohols. The storage area should be equipped with suitable materials to contain spills.