| L-Cystine | CAS NO:56-89-3 |
| Chemical Name | L(-)-3,3'-Dithiobis(2-aminopropanoic acid) |
Structure Formula | |
Molecular Formula | C6H12N2O4S2 |
Molecular Weight | 240.29 |
Cas No | [56-89-3] |
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 |
AJI92 | USP24 | FCC4 | |||
| Appearance | White crystals or crystalline powder | White crystals or crystalline powder | |||
| Assay | 98.5~101.0% | 98.5~101.0% | 98.5~101.5 | ||
| PH | 5.0~6.5 | ||||
| Specific rotation[a]D20° | -215°-225° | -215°-225° | -215°~-225° | ||
| State of solution | ≥98.0% | ||||
| Chloride(Cl) | ≤0.020% | ≤0.02% | |||
| Ammonium(NH4) | ≤ 0.02% | ||||
| Sulfate(SO4) | ≤0.020% | ≤0.02% | |||
| Iron(Fe) | ≤20PPm | ≤20PPm | |||
| Heavy metals(Pb) | ≤10PPm | ≤15PPm | ≤20ppm | ||
| Lead(pb) | ≤10ppm | ||||
| Arsenic(As2O3) | ≤1PPm | ||||
| Other amino acids | Conforms | ||||
| Loss on drying | ≤0.2% | ≤0.2% | ≤0.2% | ||
| Residue on ignition | ≤0.1% | ≤0.1% | ≤0.1% |
PACKING; 25KGS/DRUM
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L-Cystine
