... BEST QUALITY&GOOD PRICE. Calcium Carbide / Acetylene gas / CaC2Gas Yeild: 305L/KGSize:50-80mmPH3(V/V) :≤0.08% ... from calcium carbide is raw material to make ethylene, chloroprene rubber, calcium cyanamide, aceticacid, acetaldehydr, ethylacetate, cyanideacetate, dicyandiamide, acetone, octanol, trichloride ... steel and for cutting and welding metal Calcium Carbide / Acetylene gas / CaC2