SPECIFICATION
| Appearance | Colorless or white crystals, or a white crystalline powder |
| Clarity and color of solution | Clear and colorless |
| Assay | 99.0-101.0% |
| Chloride | ≤0.011% |
| Sulphate | ≤0.010% |
| Ammonium | ≤0.02% |
| Iron | ≤10ppm |
| Heavy metals | ≤10ppm |
| Loss on drying | ≤0.20% |
| Residue on ignition | ≤0.1% |
| Related substances | TLC (not more intense than standard solution) |
MOLECULAR STRUCTURE：
Molecular Formula:C2H7NO3S
