
| Item | Specifications |
| Appearance | Whitecrystalsorcrystallinepowder |
| Assay,% (on dried basis) | 99.0%~100.5% |
| a state of solution | ≥98% |
| Specifc Rotation | +23.0—+24.5 |
| pH value (2% w/v solution) | 5.6~6.1 |
| Heavy metals (as Pb),% | ≤0.001% |
| Lron(Fe)% | ≤0.001% |
| Arsenic,% | ≤0.0001% |
| Sulfate (SO4-2) ,% | ≤0.02% |
| Chloride(as Cl),% | ≤0.02% |
| Loss on drying,% (100~105℃) | ≤0.2% |
| Residue on ignition (as sulphate ash) ,% | ≤0.1% |
| Ammonium, % | ≤0.02% |
| Other Amino Acids | 应符合规定 Conforms |
| Particle size | --- |