Overview
Oleic acid is a naturally occurring fatty acid that is a major component of many animal and vegetable oils, such as olive oil and sunflower oil. It is classified as a monounsaturated omega-9 fatty acid due to its single double bond at the ninth carbon atom. Oleic acid is valued for its stability and beneficial health effects, making it a key ingredient in various industrial and consumer products. In its pure form, oleic acid is a colorless to pale yellow oily liquid with a slight odor. It is insoluble in water but dissolves readily in organic solvents like ethanol and ether. The compound is widely used in industries ranging from cosmetics to food processing due to its emollient properties and ability to enhance product texture.
Physical and Chemical Properties
Oleic acid has a molecular formula of C18H34O2 and a molecular weight of 282.47 g/mol. It is a monounsaturated fatty acid with a cis configuration at the double bond, which contributes to its relatively low melting point of 13-14 °C. The boiling point of oleic acid is around 360 °C, and it has a density of 0.895 g/cm³. The compound is stable under normal conditions but can oxidize when exposed to air over time, leading to rancidity. Oleic acid is hydrophobic and insoluble in water, but it forms micelles in aqueous solutions when combined with surfactants. Its chemical stability and solubility profile make it suitable for a wide range of industrial applications.
Main Applications
Oleic acid is extensively used in the cosmetics industry as an emollient and skin-conditioning agent. It helps to maintain skin moisture and improve product spreadability. In the pharmaceutical sector, oleic acid serves as an excipient in drug formulations and as a component in ointments and creams. The food industry utilizes oleic acid as a food additive and emulsifier. It is also a key ingredient in the production of soaps and detergents, where it acts as a surfactant. Additionally, oleic acid is used in the manufacturing of lubricants and biofuels due to its favorable viscosity and stability properties.
Safety and Storage
Oleic acid is generally considered safe for use in various applications, but precautions should be taken to avoid prolonged exposure. It can cause mild skin and eye irritation upon contact, so protective equipment such as gloves and goggles is recommended when handling the substance. For storage, oleic acid should be kept in a cool, dry place away from direct sunlight and heat sources. Containers should be tightly sealed to prevent oxidation and contamination. Proper ventilation is essential in storage areas to minimize the risk of vapor accumulation.
B2B Procurement Guide
When procuring oleic acid for industrial use, buyers should prioritize suppliers who provide detailed certificates of analysis (COA) and material safety data sheets (MSDS). These documents ensure the product meets required purity and safety standards. It is advisable to purchase oleic acid in bulk quantities to benefit from cost savings, but storage capacity and shelf life should be considered. Buyers should also verify the supplier's reputation and compliance with industry regulations to ensure consistent quality and reliability.
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