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Appearance
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White crystalline powder
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Assay (iodometric)
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Min 99%
|
|
Foreign heavy metals, soluble mercury salts (as Pb)
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Max 0.002%
|
|
Ammonium (NH4)
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Max 0.01%
|
|
Substance not reducible with formic acid (Residue on ignition as SO4)
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Max 0.1%
|
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Loss on drying
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Max 0.5%
|
|
Impurities with an acidic or alkaline reaction
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Passes test
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