| ITEMS | SPECIFICATION | |
| Description | Green - yellow crystal powder | |
| Melting point | 169~172°C | |
| pH | 5.8~7.0 | |
| Loss on dry | NMT 1.5% | |
| Heavy metals | NMT 0.001 % | |
| Sulphate ashes | NMT 0.1 % | |
| Microbiological cleanliness | Category 1.2 | |
| Pyrogen test | The drug should be apyrogenic | |
| Halogens | NMT 0.02 % | |
| Residual Solvents | MeOH | NMT 100ppm |
| EtOH | NMT 200ppm | |
| Total impurity | NMT 1.0% | |
| Purity | NLT 99.0 % | |