Isobaric low-pressure vapor–liquid equilibrium data of the system monochloroacetic acid + dichloroacetic acid + diethylene glycol dipentyl ether and the constituent binary systems

In this study, binary and ternary VLE data have been determined at 5, 7.5, and 10 kPa for the system monochloracetic acid (MCA) + dichloroacetic acid (DCA) + diethylene glycol dipentyl ether (DGDP). The extractant DGDP enhances the relative volatility of the MCA/DCA system from 1.2 without extractant up to 4. The non-ideal behavior in the liquid and vapor phase was reasonably well correlated with the NRTL and Hayden–O’Connell (HOC) model, respectively. The binary and ternary VLE data were correlated separately to obtain a better description of both datasets.