... Used in rubber, tyre, tape, etc. Products Name: Carbon BlackType: Carbon black N660Standard: GB3778-2003H.S. Code: 28030000CAS No.: 1333 ... be used in all kinds of rubber products.**Specification of Carbon Black N660No.ItemN660Superior gradeStandard grade1Iodine adsorption, g/kg36 ± ... on heat, %≤1.59Ash, %≤0.510Residue on 45μm sieve, %≤0.0500.10011Impuritiesno12Stress force on 300% of elongation, Mpa- ...