Carbon black N220, N330 N550, N660 1.CAS.NO.: 1333-86-4 ... .Usage: Rubber Industry, such as Tyres, Cable, Tape, & ink industry. Carbon black N220, N330, N550 & N660CAS.NO.: 1333-86-4 Molecular Formula ... : CMolecular weight: 12.01Appearance: Black powder or granular Specification Name ,ParameterCarbon black N220Carbon black N330Carbon black N550Carbon black N660Loding Absorption Number(g/Kg)114 ...