... acetylene and calcium hydroxide and releases heat.[Particle sizes]: Calcium carbide grain: Calcium carbide powder: The Calcium carbide granularity ... is to the reguirement of clients.[Usage]: Calcium carbide is an important basic material in ... to make ethylene, chloroprene rubber, calcium cyanamide, acetic acd, acetaldehydr, ethylacetate, cyanide acetate, dicyandiamide, acetone, octanol, trichloride ...