L-Lactic Acid CAS 79-33-4
L-Lactic Acid (CAS 79-33-4) Overview
L-Lactic acid, also known as (S)-(+)-lactic acid or 2-hydroxypropanoic acid, is a natural organic acid with versatile applications. Below is a concise overview ...
Category：Food Additives
Introduction
L-Lactic Acid (CAS 79-33-4) Overview
L-Lactic acid, also known as (S)-(+)-lactic acid or 2-hydroxypropanoic acid, is a natural organic acid with versatile applications. Below is a concise overview of its key properties and uses.
1. Basic Properties
| Parameter | Details |
|---|---|
| CAS Number | 79-33-4 |
| Chemical Formula | C₃H₆O₃ |
| Molecular Weight | 90.08 g/mol |
| Physical State | Colorless or light-yellow hygroscopic liquid/solid |
| Density | 1.206 g/cm³ (25°C) |
| Melting Point | 52–54°C |
| Boiling Point | 125°C |
| Solubility | Soluble in water, ethanol, ether; insoluble in chloroform, benzene |
2. Applications
| Field | Uses |
|---|---|
| Food Industry | Acidity regulator, preservative, flavor enhancer |
| Pharmaceuticals | Intermediate for drugs (e.g., calcium lactate, sodium lactate) |
| Cosmetics | pH adjuster, moisturizer, exfoliant |
| Agriculture | Biodegradable pesticides, soil conditioner |
| Textiles | Dyeing auxiliary, fabric softener |
| Leather Processing | Deliming agent for high-quality leather |
| Bioplastics | Precursor for polylactic acid (PLA) |
3. Safety & Handling
| Aspect | Details |
|---|---|
| Safety Profile | Mildly irritating to eyes, skin, and respiratory tract |
| Flammability | Combustible; avoid heat, sparks, and open flames |
| Storage Conditions | Store in a cool, dry place (<37°C); keep sealed and away from oxidizers |
| Emergency Response | Rinse skin with soap and water; flush eyes with water for 15 minutes |
| Personal Protection | Wear gloves, goggles, and protective clothing during handling |
4. Production & Availability
L-Lactic acid is primarily produced via fermentation of sugars (e.g., glucose, sucrose) using lactic acid bacteria. It is available in reagent-grade (98%+ purity) and industrial-grade forms, with global applications in sustainable materials and healthcare.
Factory & Shipment
