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Description
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Colourless, transparent crystals or a white , crystalline powder, efflorescent
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Identification
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Solution A gives reaction of zinc salts and sulphates
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Appearance of solution
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Solution A is clear and colourless
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pH
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4.4 to 5.6
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Arsenic
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NMT 10 ppm
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Iron
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NMT 100 ppm
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Chlorides
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NMT 250 ppm
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Assay
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NLT 99.0% and NMT 104.0% of ZnSO4,7H2O
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