L-Cysteine
CAS No.: 52-90-4
Product Name: L-Cysteine
CAS#52-90-4
Package: 25kg/drum
Delivery time: in stock for prompt shipment.
Dangerous goods or not: Not
Country of origin: China
CAS#52-90-4
Package: 25kg/drum
Delivery time: in stock for prompt shipment.
Dangerous goods or not: Not
Country of origin: China
Description
Spec of L-Cysteine :
| Items | Specification | Results |
| Appearance |
White crystalline powder or crystals | White crystalline powder or crystals |
| Identification | AJI92 | Matches reference standard |
| Specific rotation | +8.3°~+9.5° | +9.15° |
| State of solution | ≥95.0% | 99.0% |
| Chloride(CL) | ≤0.1% | 0.1% |
| Assay | 98.0%～101.0% | 99.0% |
| Loss on drying | ≤0.50% | 0.23% |
| Other amino acids | Conforms | Conforms |
| Heavy metals | ≤0.001% | ＜0.001% |
| Residue on ignition | ≤0.10% | 0.05% |
| Iron（Fe） | ≤0.001% | 0.0001% |
| Ammonium | ≤0.02% | ＜0.02% |
| Sulfate(SO4) | ≤0.03% | ＜0.03% |
| PH | 4.5～5.5 | 5.0 |
| Arsenic(As2O3) | ≤0.0001% | ＜0.0001% |
