7048-04-6 | L-Cysteine Hydrochloride Monohydrate
Products Description
L-Cysteine Hydrochloride Monohydrate is widely used in fields of medicine, food processing, biological study, materials of chemical industry and so on.It’s used as raw materials for manufacturing N-Acetyl-L-Cysteine , S-Carboxymethyl-L-Cysteine and L-Cysteine base etc.Used in the cure of liver disease, antioxidant and antidoteIt is a promotor for bread fermentation. It promotes the form of glutelin and prevents from getting ageing.Also used in cosmetic.
Specification
| Item | 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 | — |
