【CAS】598-82-3 Molecular formula: C3H6O3 Relative molecular mass:90.0705
Structural formula:
一．Product Property：
Soft acidity: Lactic acid has a mild acidic taste and is suitable for seasoning.
Antimicrobial effect: It can effectively inhibit the growth of pathogenic microorganisms and extend the shelf life of food.
Water solubility: Lactic acid is easily soluble in water and can be mixed with water, ethanol, etc. freely, making it convenient to use.
二．Quality Index:
| Parameter | Unit | Specification (Food Grade) |
| Appearance | — | Colorless or yellowish liquid |
| Assay (C₃H₆O₃) | % (w/w) | ≥ 80.0 (aqueous solution) |
| Sulfate (SO₄²⁻) | % (w/w) | ≤ 0.005 |
| Chloride (Cl⁻) | % (w/w) | ≤ 0.002 |
| Iron (Fe) | mg/kg | ≤ 10 |
| Heavy Metals (as Pb) | mg/kg | ≤ 5 |
| Arsenic (As) | mg/kg | ≤ 1 |
| Sugars | — | Passes test (no reduction) |
| Volatile Acids (as Acetic Acid) | % (w/w) | ≤ 0.2 |
| Residue on Ignition | % (w/w) | ≤ 0.1 |
| Cyanide (CN⁻) | mg/kg | ≤ 5 |
| Oxalate (C₂O₄²⁻) | mg/kg | ≤ 100 |
| Microbiological Limits | — | Absence of pathogens |
三．Application scope and Usage：
Food Industry: Lactic acid is widely used in foods such as meat, beverages, wine-making, candies, and bread, as it can regulate pH levels, enhance flavor, and extend shelf life.
Dairy Products: As a natural ingredient, lactic acid is widely used in yogurt, cheese, and ice cream, enhancing flavor and antimicrobial properties.
Meat Products: Derivatives such as sodium lactate and potassium lactate are used in meat processing, which can absorb moisture and inhibit the growth of spoilage bacteria. Beverage: Among fruit juices and soft drinks, lactic acid serves as an acidulant, enhancing the taste and maintaining the stability of the product.
四．Package and Storage：
Lactic acid is typically packaged in high-density polyethylene (HDPE) drums,25kg/barrel , stainless steel containers, or food-grade plastic IBC totes to prevent corrosion and contamination. The packaging must be tightly sealed to avoid moisture absorption and oxidation.
For storage, lactic acid should be kept in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and incompatible materials (e.g., strong oxidizers).
