Product name: L-Cysteine hydrochloride monohydrate
Standard: AJI 92
Molecular Formula: C3H8ClNO2S.H2O
Molecular Weight: 175.63
CAS number: 7048-04-6
Appearance White crystals or crystalline powder
Specific rotation[a]D20 +5.5degree ~ +7.0degree
State of solution: NLT 98.0%
Chloride(Cl): 18.89% ~ 20.29%
Ammonium: NMT 0.02%
Sulfate(SO4): NMT 0.020%
Iron(Fe): NMT 10ppm
Arsenic(AS2O3): NMT 1ppm
Heavy metals, as Pb: NMT 10ppm
Other amino acids Chromatographically not detectable
Loss on drying: 8.5% ~ 12.0%
Residue on ignition: NMT 0.10%
Assay: 99.0% ~ 100.5%
pH 1.5 ~ 2.0
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