(Liquid-Liquid) Equilibria of (water+1, 3-butanediol+2-ethyl-1-hexanol)at different temperatures

The importance of the availability of precise liquid–liquid equilibrium data (LLE) in rational design of many chemical processes and separation operations, have been the subject of much interest in recent years. Many researchers have investigated various kinds of multi-component systems in order to understand and provide further information about the phase behavior and the thermodynamic properties of such systems [1–3]. Here, we applied LLE data for the ternary system (water + 1, 3-butanediol + 2-ethyl-1-hexanol) at different temperature (298.15 and 303.15) K. From the experimental results, 2-ethyl-1-hexanol was chosen as a suitable solvent for extracting of 1, 3-butanediol, which has a suitable molecular structure, low cost, high boiling point, and very low solubility in water [4].The experimental results were compared with those correlated using the UNIQUAC model.