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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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