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Appearance
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Yellow to yellow-orange/brown lumps or granular powder
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|
Assay (iodometric)
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Min 97%
|
|
Substance insoluble in HCl
|
Max 0.05%
|
|
Free acid (as HCl)
|
Max 0.2%
|
|
Free chlorine (CI)
|
Max 0.005%
|
|
Sulphate (SO4)
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Max 0.05%
|
|
Total nitrogen (N)
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Max 0.005%
|
|
Heavy metal (as Pb)
|
Max 0.005%
|
|
Arsenic (As)
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Max 0.001%
|
|
Substance not precepitate by NH3 (as SO4)
|
Max 0.1%
|