L-Cysteine hydrochloride monohydrate

L-Cysteine hydrochloride monohydrate Identification Name L-Cysteine hydrochloride monohydrate Synonyms alpha-Amino-beta-mercapto-propionic acid hydrochloride monohydrate Molecular Formula C3H8ClNO2S.H2O Molecular Weight 175.63 CAS Registry Number 7048-04-6 Safety Data Hazard Symbols Xi Risk Codes R36/37/38 Safety Description S26 Packaging & Delivery Packaging Detail: 25kg/drum Delivery Detail In one month after final confirmation Specifications L-Cysteine Hydrochloride Monohydrate cas:7048-04-6 99% Specifications USP AJI Appearance White crystals or crystalline powder; strongly acid taste. Identification Infrared Absorption --- Specific optical rotation +5.6 °- +8.9 ° +5.5 °- +7.0 ° State of solution (Transmittance) --- ≥ 98.0% clear and colorless Chloride (Cl) --- 19.89-20.29% Ammonium(NH4) --- ≤ 0. 002% Sulfate ≤ 0. 03 % ≤ 0. 020% Iron ≤ 0. 003 % 10ppm Heavy Metals (as Pb), ≤ 0.00 15% ≤ 10ppm Arsenic (as As), --- ≤ 1ppm Other amino acids --- Not detected Organic volatile impurities Meets the requirement --- Loss on drying, 8-12 % 8.5-12 % Residue on ignition, c ≤ 0.1 0 % Assay 98.5-101.5 % 9 9.0-10 0.5 % pH value --- 1.5-2.0 Organic volatile impurities Meets the requirement --- Chromatographic purity 0.5% max Individual impurity, 2% max total ---