| ≥1 piece |
L-Cysteine Monohydrochloride Property:
White crystals or crystalline powder;Soluble in water, slightly dissolve in the ethanol. Insoluble in benzene, ether, acetone, ethyl acetate and carbon tetrachloride.
L-Cysteine Monohydrochloride Specification:
Item | Specification |
Standard | AJI92/FCCIV |
Assay (dried substance) | 99.0% ~ 101.0% |
Specific rotation[α]D20 | +5.5 ~ +7.0° |
State of solution, % | ≥98.0 |
Sulfate (SO4), % | ≤0.02 |
Chloride (Cl), % | 19.89-20.29 |
Ammonium salt (NH4), % | ≤0.02 |
Iron (Fe), % | ≤0.001 |
Loss on drying, % | 8.5-12.0 |
Residue on ignition, % | ≤0.10 |
Heavy metals (Pb), % | ≤0.001 |
Arsenic (As), % | ≤0.0001 |
pH | 1.5 ~ 2.0 |
Other amino acids | Negative |