... carbideCAS:75-20-7CaC2 [Molecular Formula]: CaC2[Molecular weight]: 64.10[Specification]: Grey, brown or black solid, purple when its purity ... ]: Packed in steel drum of 100kg, net each and marked with "calcium carbide avoid fire and water" on the side, Stored ... Acetylene %(V/V)≤0.100.100.15 Direct from factory, with better price.