| Items |
Requirements |
| Appearance |
White to yellow crystalline powder |
| Specific rotation |
-30.0° to -33.0° |
| Identification
|
Corresponds to standard |
| Acidity or alkalinity
|
5.5 to 6.4 |
| Loss on drying,%
|
Not more than 0.2 |
| Residue on ignition,%
|
Not more than 0.1 |
| Heavy metals(Pb),%
|
Not more than 0.001 |
| Arsenic (As),%
|
Not more than 0.0001 |
| Assay,%
|
98.5 to 101.0 |