L-Cysteine hydrochloride monohydrate CAS NO.7048-04-6

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USP30

Appearance White crystal or crystalline powder

Identification Infrared absorption

Specific rotation  

+5.7~+6.8°

Loss on drying 8.0-12.0%

Residue on ignition 0.4% max

Sulfate 0.03% max

Iron 0.003% max

Heavy metals 0.0015% max

Chromatographic impurity, as USP30(TLC) Individual impurity: 0.5% max

Total impurity: 2.0% max

Organic volatile impurities Meets the requirement

Assay 98.5-101.5%