Introduction
L-Cysteine Hydrochloride Anhydrous Overview
1. Chemical Properties
Property |
Description |
Appearance |
White crystalline or powder, slightly odorous, acidic taste |
Solubility |
Easily soluble in water, ammonia, acetic acid; slightly soluble in ethanol, acetone |
Stability |
Stable in acidic conditions; prone to oxidation in neutral/slightly alkaline solutions |
Other Characteristics |
Hygroscopic, decomposes slowly in air, aqueous solution is acidic |
2. Applications
Industry |
Uses |
Food |
Bread improver (promotes fermentation, prevents oxidation); nutritional supplement (prevents vitamin C oxidation in juices) |
Pharmaceuticals |
Treatment of radiopharmaceutical poisoning, heavy metal poisoning, toxic hepatitis; biochemical research reagent |
Cosmetics |
Component in hair perms, sunscreens, hair growth tonics |
3. Preparation Methods
Method |
Process |
Chemical Reduction |
Cystine dissolved in dilute HCl, reduced with tin granules, purified through crystallization |
Electrolytic Reduction |
Electrolysis of cystine hydrochloride solution in a divided cell |
Enzymatic Method |
Enzymatic hydrolysis of DL-ATC |
4. Safety Information
Aspect |
Details |
Hazards |
Skin/eye irritation, potential respiratory irritation |
Safety Measures |
Avoid inhalation, wear protective gloves/goggles, store in cool, dry place away from light |
Storage Conditions |
Sealed container, cool, dry location, protected from light |
Summary
L-Cysteine Hydrochloride Anhydrous is a versatile compound with applications spanning food, pharmaceuticals, and cosmetics. Its unique chemical properties make it particularly useful as a reducing agent and stabilizer. Proper handling and storage are essential to maintain its efficacy and ensure safety.
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