Liquid–liquid equilibria of aqueous mixtures containing selected dibasic esters and/or methanol

The liquid–liquid equilibrium (LLE) properties were measured for the ternary systems of water + methanol + dimethyl adipate, water + adipic acid monomethyl ester + dimethyl adipate and water + methanol + dimethyl glutarate at temperatures ranging from 298.15 to 318.15 K under atmospheric pressure. Each ternary system exhibited type-I LLE behavior and the region of heterogeneity was found to increase with a decrease of temperature. These new LLE data were correlated with the NRTL model and also used to examine the validity of various versions of the UNIFAC models.