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    Products > Zinc Sulphate Heptahydrate
     
     

    Items

    Index

    II

    High-class standard

    First-class standard

    Qualified standard

    Specifications

    Zn, %

    22.51

    22.06

    20.92

    ZnSO4 .7H2O, %> =

    99.0

    97.0

    92.0

    Insoluble percentage ,, %< =

    0.02

    0.05

    0.10

    PH >=

    3.0

    3.0

    -

    Pb, %< =

    0.001

    0.010

    0.010

    Fe, %< =

    0.003

    0.020

    0.060

    Mn, % < =

    0.005

    0.1

    -

    Cd, % < =

    0.001

    0.010

    -

     


     





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