Abstract
In this study, isobaric vapor-liquid equilibrium (VLE) data for ternary systems of chloroform + ethanol + 1,3-dimethylimidazolium dimethylphosphate ([MMim][DMP]) were measured with a modified Othmer still at 101.3 kPa. VLE data were correlated with the nonrandom two-liquid (NRTL) model and the fitted results showed that [MMim][DMP] produced a crossover effect between salting-in and salting-out on chloroform. Moreover, the minimum concentration of [MMim][DMP] needed to break the azeotrope of the chloroform + ethanol system was 0.058 (mole fraction). In the current work, the effects of [MMim][DMP] were analyzed and compared with that of other ionic liquids (ILs), and [MMIM][DMP] found to be an effective candidate entrainer.
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