N220 N330 N550 N660 Iodine-absorption number, g/kg 121fa5 82fa7 43 fa 6 36 fa 6 Dbp absorption (10-5 m3/kg ) 114fa5 102fa7 121 fa 7 90 fa 7 Compression dbp absorption (10-5 m2/kg) 90f+105 78f+98 77f+93 66f+82 Nitrogen surface area absorptive(103m2/kg) 109-129 73-93 34-50 27-43 Surface of ctab absorption rate (102 m2 / kg ) 102f+121 73f+91 35f+49 29f+43 Ash content% 0.5 0.5 0.5 0.5 45¬8m sieve residue, %fn 0.10 0.10 0.10 0.10 150¬8m sieve residue, %fn 0.02 0.02 0.02 0.02 Surface of he absorption rate ( 102 m2 / kg ) 112f+126 71f+85 34f+46 29f+41 Tint stregth( %) 105~125 95 ~ 111 - - Appearance Black powder or granular Packing 25kg net bag, 16mt in 20f+fcl Usage Its mainly used in rubber industry, and in printing ink, paint, plastic industry, car tire tread etc. wangde6@wdchem.cn Granular packing 25kg net bag, 16mt in 20f+fcl