Complaint
| Appearance | White crystalline powder |
| Particle size | 18-60 mesh,30-60 mesh,80-100 mesh |
| Assay (dry basis) | 99.5-100.5% |
| Ash | ≤0.1% |
| Moisture | ≤0.2% |
| Reducing sugars | ≤0.3% |
| Ribitol and glycerol | ≤0.1% |
| Melting point | 119ºC-123ºC |
