| Appearance | A white to off-white hygroscopic crystalline powder |
| Identification | Should conform |
| Solubility | Should conform |
| Specefic Rotation | +10°~+14°(in 5mg/ml of water) |
| Water | NMT3.0% |
| Heavy Metals | NMT0.002% |
| Limit of Free Phosphate | NMT0.1% |
| Limit of Sodium | NMT0.2% |
| Limit of chloride | NMT0.2% |
| Microbial Limits Test | Should conform |
| Related substances | Should conform |
| Residual Solvents | should conform |
| Assay | 98.0%~102.0% |
