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Contact SupplierAppearance | A white crystalline powder |
Assay (argentometric) | Min 98% |
Sulphate (SO4) | Max 0.02% |
Lead (Pb) | Max 0.005% |
Copper (Cu) | Max 0.002% |
Iron (Fe) | Max 0.001% |
Zinc (Zn) | Max 0.02% |
Substance not precipitated by H2S (as SO4) | Max 0.2% |