Specification: N220, N330, N550, N660, N990, N774, N326, etc.

 Properties: Pure black fine grain or powder which can burn in air. Relative density: 1.8??2.1g/cm3; Solubility: not soluble in water, acid and alkali.
 Applications: Widely used in textile, printing and dyeing, ceramic, paper, synthetic detergent, pesticide, metallurgy, food, rubber, etc.                                    

Certificate of Analysis(N220)
Iodine absorption  g/kg:121±7
CTAB adsorption surface area   m2/g:102-120
DBP absorption value  cm3/100g:114±7
DBP absorption value of sample change compaction  cm3/100g:90-106
Color intensity %:108-124
Fine powder content % ;  ≤10
Heating loss % :  ≤2.5
Ash content % : ≤0.7
Decant density:355±40