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                                       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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