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Appearance
|
Light Red to Very Dark Purple Powder
|
|
Assay (on anhydrous basis)
|
98.0-102.0%
|
|
Identification 'A' ( by IR)
|
Passes test
|
|
Identification ‘B’
|
To comply USP test
|
|
Loss on drying (at 105°C; 4 hrs)
|
Max 4.0%
|
|
Chloride (Cl)
|
Max 0.06%
|
|
Sulphate (SO4)
|
Max 0.2%
|
|
Heavy metal (as Pb)
|
Max 0.001%
|
|
Arsenic (As)
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Max 0.0005%
|