L-Cysteine hydrochloride monohydrate CAS 7048-04-6
L-Cysteine Hydrochloride Monohydrate (CAS 7048-04-6) is an important sulfur-containing amino acid derivative widely used in food, medicine, cosmetics, and industrial applications. Its core value stems from the active sulfhydryl group (-SH) within the molecule, which imparts its reducing, antioxidant, and bioregulatory properties.
| Appearance | White crystalline powder |
| Density (at 25℃) / g/cm-³ | 1.54±0.02 |
| Content (w/%) ≥ | 99.00 |
| Melting point (℃) | 175 |
| Heavy metals (Pb, w/%) ≤ | 0.0010 |
| Total arsenic (As, w/%) ≤ | 0.0002 |
| Water solubility test | Colorless transparent solution |
1. Food Industry
(1) Dough Improver: By breaking the disulfide bonds of flour proteins, it enhances the dough's extensibility and fermentation efficiency, improves the softness and anti-aging properties of bread and noodles, and the added amount usually does not exceed 0.06g/kg.
(2) Antioxidant and Color Preservative: Inhibits enzymatic browning (such as polyphenol oxidase) of fruits, vegetables, and meat, prolongs shelf life; stabilizes the vitamin C content of natural fruit juice and prevents oxidative discoloration.
(3) Flavor Enhancer: Participates in the Maillard reaction to generate flavor substances in meat and seasonings, improving the taste of food.
2. Cosmetics and Personal Care
(1) Hair Care Products: Regulates keratin disulfide bonds, repairs perm and dye damage, reduces hair loss, and is used in shampoos and conditioners.
(2) Skin Care: Removes UV-induced free radicals and is added to sunscreens and anti-aging products to delay oxidative damage to the skin. 3. Nutrition and feed additives
(1) Nutritional supplements: As an essential amino acid precursor, used in sports supplements and infant formula to support muscle repair and immune function.
(2) Feed applications: Supplementing sulfur-containing amino acids (replacing methionine) to promote the growth of livestock and poultry.
4. Industry and others
(1) Chemical synthesis: As a thiol reagent, used to synthesize drug intermediates such as N-acetylcysteine (NAC).
(2) Scientific research applications: Anaerobic bacteria culture, heavy metal detection reagents, etc.
25kgs/drum, 9tons/20’container
25kgs/bag, 20tons/20’container
L-Cysteine hydrochloride monohydrate CAS 7048-04-6
L-Cysteine hydrochloride monohydrate CAS 7048-04-6
