| ITEMS | SPECIFICATION |
| Appearance | Green - yellow crystal powder. |
| Assay | Not less than 99,0 % |
| Loss on drying | Not more than 0,50 % (100 °C; 2 h) |
| pH. | From 5,8 to 7,0 |
| Total impurity | Total impurity level should be no more than 1 % |
| Maximum impurity | Maximum 1 impurity level should be no more than 0,2 % |