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Appearance
|
White crystalline powder
|
|
Specific optical rotation ([α]20/D; 10% w/v solution containing 0.4% v/v of 5M ammonia )
|
+18.50 to +19.50 deg
|
|
Acidity
|
Passes test
|
|
Loss on drying (at 100°C)
|
Max 0.5%
|
|
Sulphated ash
|
Max 0.1%
|
|
Lead (Pb)
|
Max 0.001%
|
|
Chloride (Cl)
|
Max 0.033%
|