Specific Indicators  of Acetylene Black made by Hexing

Category\item
used for batteries
used for conductive silicone
used for special industries
Powder
Granular
Apparent specific volume (ml/g)
16~17
10~12
7~9
3~5
Iodine absorption (g/kg)≥
90
90
90
90
Hydrochloric acid absorption  (ml/g) ≥
4.4
4
3.5
2.4
Resistivity(Ω.m) ≤
1.8
2
2.8
5
PH value
6~8
6~8
6~8
6~8
Loss on heating(%) ≤
0.2
0.2
0.2
0.2
Ash content(%)≤
0.2
0.2
0.2
0.2
Grit content(%)≤
0.003
0.003
0.003
0.003
Impurities NO NO NO NO
【Absorption intensity】 ml/5g ≥
23.4
21.0
20.3
18.8
【Oil absorption value】 ml/100g ≥
250
220
213
198


 Remarks:  1、 Some index could be adjusted in accordance with customer's requirements.
                   2、 Testing method is based on GB/T3782-2006, the indexes with "【】" are based on 
                         Hexing's Standard.

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