Properties: it is clear bright tabular crystal with metallic color. It is able to dissolve in water or alcohol.
| Item | Index |
| purity[C5H11NO2Se] % | 98.0 |
| Iron[Fe]% | 0.005 |
| Water insoluble matter% | 0.05 |
| Arsenic[As]% | 0.0005 |
| Chloride[CL]% | 0.05 |
| Heavy metals[as Pb]% | 0.001 |