SPECIFICATION
| Appearance | White or almost white crystalline powder or free-flowing granules |
| Assay | 99.5-100.5% |
| Related substances: | |
| Ribitol | ≤0.1% |
| Glycerol | ≤0.1% |
| Reducing sugars (as glucose) | ≤0.3% |
| Lead | ≤1ppm |
| Loss on drying | ≤0.2% |
| Residue in ignition | ≤0.1% |
MOLECULAR STRUCTURE：
Molecular Formula:C4H10O4
