L-胱氨酸
L-胱氨酸
CAS NO：56-89-3
| Chemical Name | L-胱氨酸 |
| Molecular Structure |  |
| Molecular Formula | C6H12N2O4S2 |
| Molecular Weight | 240.29 |
| Characteristics | A colorless or white crystalline substance of hexagon,or crystalline powder,easily soluble in acid and alkali,insoluble in water and organic solvents such as alcohol, ethyl ether. |
| Packing | 25㎏/drum，25㎏/carton |
| Quality Standard | AJI92/USP28/EP5/FCCIV |
| Specification | |
| Specific rotation[a]D20° | -215°～-225° |
| State of solution | ≥98.0% |
| Heavy metals(Pb) | ≤10PPm |
| Residue on ignition | ≤0.1% |
| Iron(Fe) | ≤20PPm |
| Loss on drying | ≤0.02% |
| Other amino acids | Conforms |
| Arsenic(As2O3) | ≤1PPm |
| Chloride(CI) | ≤0.02% |
| Ammonium(NH4) | ≤0.02% |
| Sulfate(SO4) | ≤0.02% |
| Assay | 98.0～101.0% |
| PH | 5～6.5 |
