STANDARD:GB 3778-2003 OR ASTMD | ||||||||||
Item | Unit | Grade | N220 | N234 | N330 | N326 | N339 | N375 | N550 | N660 |
Iodine Adsorption Number | g/Kg | superior | 121±5 | 120±5 | 82±5 | 82±5 | 90±5 | 90±5 | 43±4 | 36±4 |
Qualified | 121±7 | 120±7 | 82±7 | 82±7 | 90±7 | 90±7 | 43±6 | 36±6 | ||
DBP Absorption Number | 10 -5 m 3 /kg | superior | 114±5 | 125±5 | 102±5 | 72±5 | 120±5 | 114±5 | 121±5 | 90±5 |
Qualified | 114±7 | 125±7 | 102±7 | 72±7 | 120±7 | 114±7 | 121±7 | 90±7 | ||
Compressed DBP Absorption Number | 10 -5 m 3 /kg | 93~103 | 97~107 | 83~93 | 64~72 | 94~104 | 91~101 | 80~90 | 69~79 | |
Qualified | 90~106 | 94~110 | 80~96 | 62~74 | 91~107 | 88~104 | 77~93 | 66~82 | ||
CTAB Surface Area | 10 3 m 2 /kg | superior | 105~117 | 113~125 | 76~88 | 77~89 | 87~99 | 90~102 | 37~47 | 31~41 |
Qualified | 102~120 | 110~128 | 73~91 | 74~92 | 84~102 | 87~105 | 35~49 | 29~43 | ||
Nitrogen Surface Area | 10 3 m 2 /Kg | superior | 114~124 | 114~124 | 73~83 | 73~83 | 86~96 | 88~98 | 34~44 | 31~39 |
Qualified | 112~126 | 112~126 | 71~85 | 71~85 | 84~98 | 86~100 | 34~46 | 29~41 | ||
STSA | 10 3 m 2 /Kg | superior | 106±5 | 112±5 | 75±5 | 76±5 | 88±5 | 91±5 | 39±5 | 34±5 |
Qualified | 106±9 | 112±9 | 75±9 | 76±9 | 88±9 | 91±9 | 39±9 | 34±9 | ||
Tint strength | % | superior | 111~121 | 118~128 | 99~109 | 106~116 | 106~116 | 109~119 | ¬ | ¬ |
Qualified | 108~124 | 115~131 | 96~112 | 103~119 | 103~119 | 106~122 | ¬ | ¬ | ||
PH Value | Qualified | 7±1.5 | ||||||||
Heating Loss | %≤ | Qualified | 2.5 | 1.5 | ||||||
Ash Content | % ≤ | Qualified | 0.7 | |||||||
45 um mesh | % ≤ | superior | 0.05 | |||||||
Qualified | 0.10 | |||||||||
Impurity | Qualified | NO | ||||||||
Fines Content | %≤ | Qualified | 7 | |||||||
Discoloration | % max 1618 | Qualified | 90(85--90) | 85 | 80 | |||||
sulfur | % max 1619 | Qualified | 1.1 | 1.5 | 1.1 | |||||
Pour density | kg/m3 | Qualified | 355±40 | 320±40 | 380±40 | 455±40 | 345±40 | 345±40 | 360±40 | 440±40 |
Modulus at 300% | Mpa | superior | -2.3±1.0 | -0.4±1.0 | -0.9±1.0 | -3.9±1.0 | 0.6±1.0 | 0.1±1.0 | -0.9±1.0 | -2.6±1.0 |
Qualified | -2.3±1.6 | -0.4±1.6 | -0.9±1.6 | -3.9±1.6 | 0.6±1.6 | 0.1±1.6 | -0.9±1.6 | -2.6±1.6 |