Calcium carbide chemical name is calcium carbide, the formula is calcium carbide CAC2.5. It is the basic raw material of organic synthetic chemistry industry. With calcium carbide as raw material, a series of organic compounds can be synthesized to provide raw materials for industry, agriculture and medicine. Calcium carbide is the main component of industrial calcium carbide, the rest is free calcium oxide, carbon, silicon, magnesium, iron and aluminum, and a small amount of phosphorus and sulfide. The purity of industrial calcium carbide is about 70% -80% , impurity Cao about 24% , carbon, silicon, iron, calcium phosphate and calcium sulfide about 6% . The new wounds are shiny and appear as gray, Brown, purple or black solids with different calcium carbide content. The purple color of calcium carbide is higher. The density of industrial products is 2.22 g/cm3(18 ° C) , the melting point is 2300 ° C, the higher the purity, the easier the conductivity is. Calcium carbide. Calcium carbide has an active chemical property. Acetylene and calcium dihydroxide decompose violently in water, releasing a lot of heat. Use nitrogen to produce calcium cyanide. Calcium carbide is the main component of industrial calcium carbide, the rest is free calcium oxide, carbon, silicon, magnesium, iron and aluminum, and a small amount of phosphorus and sulfide. The new parts are shiny and look gray, brown, purple or black due to the different levels of calcium carbide. Purple with high calcium carbide. The higher the purity of calcium carbide, the easier it is to conduct electricity.