| ITEMS | STANDARD |
| Appearance | White micro-powder |
| Content | >=99.8%% |
| Cas No. | 94-09-7 |
| Molecular Formula. | C9H11NO2 |
| Melting range | 88 ~92 degree |
| Loss on Drying | Not more than 1.0% |
| Heavy metals | Not more than 0.001% |
| Residue on ignition | Not more than 0.1% |
| Chloride | Conform |