High Quality L-Cysteine hydrochloride: 1)Specification:USP/AJI/FCC 2)CAS NO.:7048-04-6 3)25kg/drum
High Quality L-Cysteine hydrochloride:
Composition: L-2-amino -3 - mercaptopropionic acid hydrochloride - hydrate
Molecular Formula: C3H7NO2S.HC1.H2O
Molecular Weight: 175.64
CAS No.: 7048-04-6
Appearance: white crystal or white crystalline powder with strong sourness,easily soluble in water.
Item | CP2010 | AJI92 |
Assay | ≥98.5% | 98.5~101.0% |
pH | 1.5~2.0 | 1.5~2.0 |
Specific rotation[a]D020 | +5.5º~+7.0º | +6.1°~+7.8° |
[a]D025 | ||
Transmittance(T430) | clear & colorless≥98.0% | clear & colorless≥98.0% |
Chloride(Cl) | 19.8~20.8% | 19.89~20.29% |
Ammonium(NH4) | ≤0.02% | |
Sulfate(SO4) | ≤0.02% | ≤0.02% |
Iron(Fe) | ≤10ppm | ≤10ppm |
Heavy metals(Pb) | ≤10ppm | ≤10ppm |
Arsenic | ≤1ppm | ≤1ppm |
Other amino acids | ≤0.5% | conforms |
Loss on drying | 8.0~12.0% | 8.5~12.0% |
Residue on ignition | ≤0.10% | ≤0.10% |
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High Quality L-Cysteine hydrochloride
