Overview
Alkyl lactate is an ester derived from lactic acid and various alcohols, characterized by its biodegradability and low toxicity. It is widely used in industries requiring environmentally friendly solvents or emollients, such as cosmetics and pharmaceuticals. The specific properties of alkyl lactate depend on the alkyl group attached, which can be ethyl, butyl, or other variants. Due to its mild nature and excellent solvent capabilities, alkyl lactate is favored in formulations where safety and environmental impact are priorities. It is also used as a carrier for active ingredients in agrochemicals and as a plasticizer in certain polymer applications.
Physical and Chemical Properties
Alkyl lactate typically appears as a colorless to pale yellow liquid with a mild, slightly sweet odor. Its density ranges between 1.05 and 1.10 g/cm³, and it is soluble in water, alcohols, and most organic solvents. The boiling and melting points vary depending on the alkyl group, but most variants remain liquid at room temperature. Key chemical properties include its stability under normal conditions and its ability to act as a solvent for a wide range of substances. Alkyl lactate is also resistant to hydrolysis under neutral or slightly acidic conditions, making it suitable for use in aqueous formulations. Its biodegradability is a significant advantage in applications where environmental impact is a concern.
Main Applications
In the cosmetics industry, alkyl lactate is used as an emollient and solvent in skincare products, such as lotions and creams, due to its mildness and ability to enhance skin absorption of active ingredients. It is also found in sunscreens and makeup removers. Pharmaceutical applications include its use as a solvent for drug formulations and as a carrier for topical medications. In agrochemicals, alkyl lactate serves as a solvent for pesticides and herbicides, offering a safer alternative to traditional solvents. Industrial uses include its role in paints, coatings, and adhesives, where it acts as a biodegradable plasticizer or coalescing agent.
Safety and Storage
Alkyl lactate is generally considered safe for use in consumer and industrial products, with low toxicity and minimal environmental hazards. However, prolonged skin contact or inhalation of vapors should be avoided to prevent irritation. Proper personal protective equipment (PPE), such as gloves and goggles, is recommended when handling large quantities. Storage should be in a cool, dry place, away from direct sunlight and oxidizing agents. Containers should be tightly sealed to prevent moisture absorption and contamination. Shelf life is typically 12-24 months when stored under recommended conditions.
B2B Procurement Guide
When procuring alkyl lactate, B2B buyers should prioritize suppliers with certifications such as ISO or GMP, especially for applications in cosmetics or pharmaceuticals. Key factors to consider include purity levels (typically 98-99.5%), batch consistency, and compliance with industry-specific regulations. Price varies based on quantity, purity, and supplier location. Bulk purchases (e.g., drums or totes) often reduce costs. Buyers should also inquire about testing protocols and documentation, such as Certificates of Analysis (CoA), to ensure product quality. Sustainable sourcing and biodegradability claims should be verified if environmental compliance is a priority.
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