【CAS】: 52-89-1 (L-cysteine-hydrochloride, anhydrous)
【CAS】: 7048-04-6 (L-cysteine-hydrochloride, monohydrate)
【Molecular formula】: C3H7O2NS.HCL.H2O
【Relative molecular mass]: 175.64
【Properties】: Colorless to white fine columnar crystals or white crystalline powder, with slight special smell and sour taste, melting point 175℃ (decomposition). Soluble in water, the aqueous solution is acidic, PH value is 1.2 at 3%, 1.7 at 1%, 2.4 at 0.1%. Also soluble in ethanol, ammonia and acetic acid, insoluble in ether, acetone, benzene, carbon disulfide and chloroform.
【Packaging and Storage】Store in a cool place, avoid direct sunlight and humid environment.