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Appearance
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Blackish crystalline powder with metallic luster.
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|
Assay (iodometric)
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Min 99%
|
|
Substance insoluble in water
|
Max 0.2%
|
|
Chloride & chlorates (as Cl)
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Max 0.005%
|
|
Sulphate (SO4)
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Max 0.02%
|
|
Total nitrogen (N)
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Max 0.005%
|
|
Heavy metal (as Pb)
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Max 0.003%
|
|
Iron (Fe)
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Max 0.005%
|
|
Loss on drying
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Max 0.5%
|