VAPOR-PRESSURE OF FATTY-ACID ESTERS - CORRELATION AND ESTIMATION

A gas-liquid chromatography (GLC) method was investigated for estimati on of vapor pressures of fatty acid esters (FAE) with emphasis on omeg a-3 fatty acids. Specific retention data obtained from GLC were used t o determine vapor pressures of omega-3 and omega-6 fatty acid esters a t 200-230-degrees-C. Higher volatility of fatty acids with increasing omega number suggested higher solubility in supercritical CO2. Vapor p ressures of FAE reported should be of use for the design of separation processes such as supercritical fluid extraction and fractionation of omega-3 fatty acid esters.