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    Item Specifications
    Sting of Iron % 13.0% min
     
    Heavy metals（in Pb）% 0.001 max
     
    Cd% 0.001 max
     
    Water insoluble % 0.1 max
     
    PH(10g/L，25 ) ℃ 3.8-6.0
     
    Appearance
    Yellow or pale yellow crystalline powder
     
     
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