Isothermal (vapor + liquid) equilibria for the binary mixtures of (propylene oxide + ethanol) and (propylene oxide + 1-propanol) at several temperatures

•Phase equilibrium data for propylene oxide with alcohols were investigated.•The experimental data were correlated with PRSV EOS.•Van der Waals one fluid and Wong–Sandler mixing rule were used.•NRTL, UNIQUAC, Wilson models were chosen as GE models.•The experimental data are fit well with all three models.

Isothermal (vapor + liquid) equilibrium data for the binary mixtures of (propylene oxide + ethanol) and (propylene oxide + 1-propanol) were measured using a static apparatus at three different temperatures ranging from (303.15 to 333.15) K at an interval of 15 K. The measured data were correlated using Peng–Robinson–Stryjek–Vera equation of state (PRSV EOS) combined with van der Waals one-fluid mixing rule for the vapor phase and with Wong-Sandler mixing rule involving a non-random two liquid (NRTL) model, universal quasi-chemical (UNIQUAC) model and Wilson model for the liquid phase. The experimental data are in good agreement with the correlation results.