Overview
Sodium lactate solution is the sodium salt of lactic acid, typically available as a 50-80% aqueous solution. It is produced through the neutralization of lactic acid with sodium hydroxide. As a multifunctional ingredient, it serves industries ranging from food to personal care. The compound is valued for its ability to regulate acidity, retain moisture, and inhibit microbial growth. Its non-toxic nature and biodegradability make it preferable to synthetic alternatives in many applications.
Physical and Chemical Properties
The solution exhibits high water solubility and hygroscopicity, making it effective for humidity control. Its pH typically ranges from 6.5-7.5 (60% solution), allowing compatibility with sensitive formulations. Key chemical behaviors include chelation of metal ions and synergistic effects with other preservatives like potassium sorbate. These properties enhance its functionality in complex systems such as processed meats or topical creams.
Main Applications
In food technology, sodium lactate solution extends shelf life in baked goods, meats, and dairy products while improving texture. Pharmaceutical formulations utilize it as a buffering agent in intravenous solutions and tablet coatings. The cosmetic industry employs it as a humectant in moisturizers and haircare products. Emerging uses include biodegradable antifreeze solutions and as a green solvent in specialty chemical production.
Safety and Storage
Classified as non-hazardous under normal handling conditions, the solution requires basic PPE including gloves and goggles. Spills should be contained with absorbent materials and rinsed with water. Storage tanks should be made of stainless steel or polyethylene to prevent corrosion. Bulk containers must be sealed tightly to prevent moisture absorption and concentration changes over time.
B2B Procurement Guide
Industrial buyers should specify: 1) Concentration (typically 60% for standard applications), 2) Compliance certificates (USP/EP/JP for pharmaceuticals, FCC for food), and 3) Packaging options (IBC totes, drums, or bulk tankers). Leading manufacturers include Corbion, Galactic, and Jungbunzlauer. Request certificates of analysis (CoA) for each batch, particularly testing for heavy metals (≤10 ppm) and residual methanol (≤0.2%). Consider regional suppliers to minimize shipping costs for this high-volume product.
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