CAS NO:56-89-3
Chemical Name | L-Cystine |
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 |