The specification of middle sulfur CPC: C(carbon) 98%min S(sulfur) 2-2.5%max H2O 0.3%max Ash 0.5%max Volatile 0.5%max Real density:(g/cm3) 2.06min Size:Follow buyer's demand. Packing:In 1mt Jumbo Bag or follow buyer's demand It is usually used in Aluminum Industry as the material of Anodes.