Overview
Oleyl alcohol is a monounsaturated fatty alcohol derived from natural sources like olive oil or synthesized from petrochemical feedstocks. Its high-purity form (>90%) is particularly valued in sensitive applications such as cosmetic formulations and pharmaceutical preparations. As a non-ionic surfactant and emollient, it offers excellent spreadability and moisture retention properties. The industrial production typically involves the hydrogenation of oleic acid or its esters, followed by rigorous purification processes. The compound's unsaturated nature (C18:1) contributes to its fluidity at room temperature and compatibility with other lipid components in formulations.
Physical and Chemical Properties
As an unsaturated alcohol, oleyl alcohol exhibits characteristic chemical reactivity including susceptibility to oxidation at the double bond position. Its viscosity ranges between 30-40 mPa·s at 20°C, making it suitable for sprayable formulations. The hydroxyl group enables esterification reactions for derivative production. Key distinguishing features include its low freezing point (remaining liquid at temperatures as low as 10°C) and refractive index of 1.458-1.462. The iodine value (85-95) confirms the degree of unsaturation. These properties make it preferable to saturated alcohols like stearyl alcohol in applications requiring better cold stability.
Main Applications
In cosmetics, oleyl alcohol serves as a primary emollient in creams, lotions, and hair conditioners, where it reduces transepidermal water loss. Its non-greasy feel and excellent spreading characteristics make it ideal for high-end skincare products. The pharmaceutical industry utilizes it as a solubilizer for topical drug delivery systems. Industrial applications include use as a lubricant additive (5-10% concentration) to improve film strength and as an intermediate for producing oleyl-based surfactants. Recent developments explore its potential in biodegradable lubricants and as a bio-based feedstock for green chemistry applications.
Safety and Storage
While classified as generally safe, oleyl alcohol should be handled with standard laboratory precautions. Oxidation products may form upon prolonged exposure to air, necessitating storage under nitrogen atmosphere for sensitive applications. Bulk storage tanks should be constructed from stainless steel to prevent contamination. For workplace safety, use appropriate PPE including nitrile gloves and safety goggles when handling large quantities. Spills should be contained with absorbent materials like vermiculite. Disposal should comply with local regulations for unsaturated fatty alcohols, typically involving incineration or approved chemical waste processing.
B2B Procurement Guide
When sourcing high-purity oleyl alcohol, prioritize suppliers who provide batch-specific certificates of analysis including: purity (GC), peroxide value (<5 meq/kg), and acid value (<0.5 mg KOH/g). Cosmetic-grade material should have microbial limits certification (total count <100 CFU/g). For large-volume procurement (tonnage quantities), consider contract manufacturing agreements with petroleum refiners or oleochemical specialists. Just-in-time delivery models help minimize storage costs. Quality audits should verify GMP compliance for pharma-grade material and review the supplier's cold chain logistics for temperature-sensitive shipments.
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