L-Cysteine Base
L-Cysteine Base
CAS NO：52-90-4
| Chemical Name | L-Cysteine Base |
| Molecular Structure |  |
| Molecular Formula | C3H7NO2S |
| Molecular Weight | 121.15 |
| Characteristics | White crystalline powder,tasteless,easily soluble in water but insoluble in alcohol and ether |
| Packing | 25㎏/drum，25㎏/carton |
| Quality Standard | AJI92/USP28/EP5/FCCIV |
| Specification | |
| Specific rotation[a]D20° | +8.3°～+9.5° |
| State of solution | ≥95.0% |
| Heavy metals(Pb) | ≤10PPm |
| Residue on ignition | ≤0.1% |
| Iron(Fe) | ≤10PPm |
| Loss on drying | ≤0.5% |
| Other amino acids | Conforms |
| Arsenic(As2O3) | ≤1PPm |
| Chloride(CI) | ≤0.04% |
| Ammonium(NH4) | ≤0.02% |
| Sulfate(SO4) | ≤0.03% |
| Assay | 98.0～101.0% |
| PH | 4.5～5.5 |
Previous：
L-Cysteine HCL MONO
Next：
L-Cystine
