Item

N220

N330

N550

N660

Iodine Absorption Value,g/kg

121±7

82±7

43±6

36±6

DBP Absorption Value,10^-5m³/kg

114±7

102±7

121±7

90±7

DBP Absorption of Compressed sample,10^-5m³/kg

90-106

80-96

77-93

66-82

CTAB Absorption Area,10³m²/kg

102-120

73-91

35-49

29-43

Adsorptive Specific Surface Area of Nitrogen, 10³m²/kg

106±9

75±9

39±9

34±9

Nitrogen Absorption Surface Area, 10³m²/kg

112-126

71-85

34-46

29-41

Tint Intensity, %

108-124

96-112

--

--

Decrement After Heating,%≤

2.5

2.5

1.5

1.5

Ash, %≤

0.7

0.7

0.7

0.7

45µm Sieve Residue, %≤

0.100

0.100

0.100

0.100

150µm Sieve Residue, %≤

0.001

0.001

0.001

0.001

Impurities

--

--

--

--

300% Stretching Stress, Mpa≥

-2.3±1.6

-0.9±1.6

-0.9±1.6

-2.6±1.6