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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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