... This product is lumpy substance, its surface is a little deep gray, has slight nasty smell. It ... condition and the goods should be stored in a dry,cool and ventilated place.It should be ... dicyandiamide, acetone, octanol, trichloride ethylene etc. Also used as desulfurizer and dehydrant of steel and for cutting and welding ... generation of acetylene gas for welding, and as a reagent,Calcium Carbide