Test item

CARBON BLACKN220

CARBON BLACKN330

CARBON BLACKN550

CARBON BLACKN660

Absorption number g/kg

121±7

82±7

43±6

36±6

CTAB adsorption surface area m²/g

102-120

73-91

35-49

29-43

DBP absorption value cm³/100g

114±7

102±7

121±7

90±7

DBP absorption value of sample change compactioncm³/100g

90-106

80-96

77-93

66-82

Color intensity

108-121

96-112

107

107

Fine powder content

≤10

≤10

≤10

≤10

Heating loss

≤2.5

≤2.5

≤1.5

≤1.5

Ash content

≤0.5

≤0.5

≤0.5

≤0.5

Decant density

355±40

380±40

360±40

440±40

≤0.10

≤0.10

≤0.10

≤0.10

100 Residue on sieve

≤0.02

≤0.02

≤0.02

≤0.02

Nitrogen adsorption surface aream²/g

112-126

71-85

34-46

29-41

 Impurity material

  None

None

None

  None