N220 Iodine-absorption number, g/kg121f5 Dbp absorption (10-5 m3/kg )114f5 Compression dbp absorption (10-5 m2/kg)90f+105 Nitrogen surface area absorptive(103m2/kg)109-129 Surface of ctab absorption rate (102 m2 / kg )102f+121 Ash content%0.5 45¼8m sieve residue, %fn0.10 150¼8m sieve residue, %fn0.02 Surface of he absorption rate (102 m2 / kg)112f+126 Tint stregth( %)105~125 N330 Iodine-absorption number, g/kg 82f7 Dbp absorption (10-5 m3/kg ) 102f7 Compression dbp absorption (10-5 m2/kg)78f+98 Nitrogen surface area absorptive(103m2/kg) 73-93 Surface of ctab absorption rate (102 m2 / kg )73f+91 Ash content% 0.5 45¼8m sieve residue, %fn0.10 150¼8m sieve residue, %fn0.02 Surface of he absorption rate ( 102 m2 / kg )71f+85 Tint stregth( %)95 ~ 111 N550 Iodine-absorption number, g/kg 43 f 6 Dbp absorption (10-5 m3/kg )121 f 7 Compression dbp absorption (10-5 m2/kg)77f+93 Nitrogen surface area absorptive(103m2/kg)34-50 Surface of ctab absorption rate (102 m2 / kg )35f+49 Ash content% 0.5 45¼8m sieve residue, %fn0.10 150¼8m sieve residue, %fn0.02 Surface of he absorption rate ( 102 m2 / kg )34f+46 Tint stregth( %) -- N660 Iodine-absorption number, g/kg 36 f 6 Dbp absorption (10-5 m3/kg )90 f 7 Compression dbp absorption (10-5 m2/kg)66f+82 Nitrogen surface area absorptive(103m2/kg)27-43 Surface of ctab absorption rate (102 m2 / kg )29f+43 Ash content%0.5 45¼8m sieve residue, %fn0.10 150¼8m sieve residue, %fn0.02 Surface of he absorption rate (102 m2 / kg)29f+41 Tint stregth( %) -- 25kg net bag, 16mt in 20f+fcl