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Item | Specification |
Appearance | White crystalline solid or powder |
Assay | =<99.0% |
pH (10% aqueous solution) | 6.0~9.0 |
Loss on drying | =<4.0% |
Alkalinity | pass test |
Heavy metal | =<0.001% |
Lead | =<5mg/kg |
fluoride | =<10mg/kg |
Iron | =<30mg/kg |
mercury | =<1mg/kg |
As | =<3mg/kg |
Water insoluble matter | =<0.1% |







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