... SGS or any other agency as per your requirementDescription:calcium carbide is a grayshi-black crystalline compound obtained ... dehydrating agent,and in the manufacture of graphite and hydrogen.Calcium carbide is also used as a fule in steelmaking ... materials,the combination can produce acetylene,chloroprene rubber,calcium cyanamide,acetate acid,trichloroethylene,and acetaldehyde.Moreover,it can be used ...