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 | --- |