Isobaric Vapor-Liquid Equilibrium Data for the Isopropanol-Water System

This work presents experimental isobaric vapor-liquid equilibrium data for the isopropanol-water system collected at 150 kPa, 200 kPa, 250 kPa and 300 kPa at the Process Thermodynamics laboratory (PT lab) of Politecnico di Milano and its representation with the thermodynamic models PSRK, NRTL, UNIFAC and Wilson. The system is strongly non-ideal, with the presence of a minimum boiling azeotrope which has been found at all the analyzed pressures. Data at the considered pressures for the system are not available in the literature, though being of interest for the thermodynamic modeling based on the use of models for the description of strongly non-ideal mixtures which employ thermodynamic parameters regressed on the basis of experimental points. The reliability of the operation of the experimental unit and of the measurements has been checked by determining the vapor pressure curve of the single components and by comparing it with the ones from the literature and by comparing the collected data for the binary system with those available in the literature at atmospheric pressure. In addition, the test on thermodynamic consistency has been performed for all the collected data.