|
Appearance
|
White crystalline powder
|
|
Assay (by HClO4 titration)
|
99.0-101.0%
|
|
Identity (IR)
|
Passes test
|
|
Optical rotation (c = 10%; H2O)
|
+25.0° to +27.0°
|
|
Insoluble matter (10% in water)
|
Max 0.005%
|
|
pH (5% solution in water; 25°C)
|
7.0 - 9.0
|
|
Loss on drying (150°C to constant weight)
|
15.61 - 15.71 %
|
|
Chloride (Cl)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Heavy metal (as Pb)
|
Max 0.0005%
|
|
Ammonium (NH4)
|
Max 0.003 %
|
|
Sulphate (SO4)
|
Max 0.005%
|
|
Phosphate (PO4)
|
Max 0.0005%
|
|
Calcium (Ca)
|
Max 0.01%
|