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Appearance
|
White crystalline powder, almost odor less
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|
Assay
|
99.0 -101%
|
|
Sulphate (SO4)
|
Max 0.03%
|
|
Reducing substance
|
Max 0.5%
|
|
Heavy metals (as Pb)
|
Max 0.002%
|
|
Lead (Pb)
|
Max 0.001%
|
|
Arsenic (As)
|
Max 0.0003%
|
|
Calcium (Ca)
|
Max 0.03%
|
|
Chloride (Cl)
|
Max 0.02%
|
|
pH
|
2.5-2.7
|
|
Specific optical rotation
|
59.20° - 64.20°
|
|
Infrared spectrum
|
Conforms
|