Measurement and Correlation of Vapor−Liquid Equilibria at T = 333.15 K and Excess Molar Volumes at T = 298.15 K for Ethanol + Dimethyl Carbonate (DMC), DMC + 1-Propanol, and DMC + 1-Butanol

Abstract

Isothermal vapor−liquid equilibrium (VLE) data are measured for ethanol + dimethyl carbonate (DMC), DMC + 1-propanol, and DMC + 1-butanol at T = 333.15 K by a using headspace gas chromatography (HSGC) method. The binary systems containing ethanol and 1-propanol have minimum boiling azeotropes. The experimental binary VLE data were correlated with common gE model equations. Excess molar volumes (VE) of ethanol + DMC, 1-propanol + DMC, and 1-butanol + DMC are obtained from the measured densities at T = 298.15 K by using a digital vibrating tube densimeter. All measured VE are shown positive deviation from ideal mixing and are correlated with the five-parameter Redlich−Kister polynomial.