Item

N220

N330

N660

Iodine Absorption Number,g/Kg

121+/-7

36+/-6

82+/-7

DBP Absorption Number10-5m3/kg

114+/-7

90+/-7

102+/-7

Compress Sample DBP Absorption Number 10-5m3/kg

90-106

66-82

66-82

CATB Absorptive Specific Surface Area 103m2/kg

102-120

29-43

80-96

STSA 103m2/kg

106+/-9

-

-

Nitrogen adsorptions specific surface area(103m2/kg)

112-126

29-41

71-85

Tinting Strength

108-124%

-

96-112%

Loss on heating

</=2.5%

</=1.5%

</=2.5%

Ash Content

</=0.7%

</=0.7%

</=0.7%

Pour density kg/m3

355+/-40

440+/-40

380+/-40

Remains through 45sieve

</=0.10%

-

-

Remains through 500sieve

</=0.001%

-

-

No.325 Sieve Residue

-

</=0.10%

</=0.10%

No.35 Sieve Residue

-

</=0.001%

</=0.001%

Impurity

No

No

No

300% Modulus Mpa

-2.3+/-1.6

-2.6+/-1.6

-0.9+/-1.6