CaC2 Calcium Carbide, high quality calcium carbide Gas Yield:295/285 0-2mm,2-4mm,4- ... -15mm,15-25mm,25-50mm,50-80mm,70-100mm CaC2, Calcium Carbide National Srandard GB10665-89 INDEXFIRST GRADESALABLE GRADEGAS YIELD L ... )Reacting with water to bring about ethine.(2)Reacting with nitrogen to product lime nitrogen .(3)The desulfurizer in steel industry. CaC2 Calcium ...