... ,50-80mm,25-50mm etc Packing:50kg,100kg Features:1) Gas yield: 285, 295, 305L/kg Applicantion:This product is lumpy ... when meets fire. The acetylene gas mix with air will form explosive gas (explosive range of acetylene gas in the air is 2.3 ... features1. NameCalcium Carbide2. Molecular formulaCaC23. UN14024. Class4.35. HS code284910006. Gas yield20 101.3 Kpa≥295L/KG7. PH3(V/V)≤0 ...