... 120mmAPPEARANCEIndustrial products are gray, brown or black,high purity calcium carbide appears purpleGAS YIELDMin 20°C ,101.3Kpa L/KG> ... raw material of acetylene industry.(1)The reaction of calcium carbide with water, producing acetylene and calcium hydroxide.[CaC2 + 2 ... of acetylene, and is the major industrial use of calcium carbide. eg.synthetize rubber,synthetic resin,acetone,ketene and carbon ...