Calcium Carbide Size:70-100mm,50-80mm,25-50mm etc Packing:50kg,100kg Features:1) Gas yield: 285, 295, 305L/kg Applicantion:This product is ... . H2S(V/V)≤0.1%9.Molecular weight64.10(according to 1995 international relative atomic mass)10. SIZE4-7,7-15,15-25,25-50,50-80,80-120MM11. Packing50kg or ...