Densities and Excess Molar Volumes of the Ternary System (1,4-Dioxane + 2-Propanol + 1,1,2,2-Tetrachloroethane) at T= 288.15–318.15 K and at Atmospheric Pressure: Experimental Measurements and Prigogine–Flory–Patterson Modeling

Excess molar volumes for 1,4-dioxane + 2-propanol + 1,1,2,2-tetrachloroethane ternary mixture and for the constituent binaries were determined from density measurements over the entire composition range at four temperatures between 288.15 and 318.15 K and at atmospheric pressure. The ether-containing binary mixtures present a positive excess molar volume, VE, with alkanol and negative VEvalues with chloroalkane over the whole composition and working temperature ranges. As the temperature increases, the VEmagnitude increases for 1,4-dioxane + 2-propanol, whereas it decreases for 1,4-dioxane + 1,1,2,2-tetrachloroethane. For 2-propanol + 1,1,2,2-tetrachloroethane mixture, sigmoidal–VEcurves are observed and the VEincreases as the temperature increases. Sigmoidal–V123Ecurves are observed also for 1,4-dioxane + 2-propanol + 1,1,2,2-tetrachloroethane ternary mixture. The equations of Redlich–Kister and Cibulka were used to fit the experimental excess molar volume data, for the investigated binary and ternary mixtures, respectively. To provide more information on solute–solvent interactions, for the studied binary mixtures, the partial molar volumes and excess partial molar volumes are calculated over the entire composition range and at infinite dilution, at 288.15 and 318.15 K. The Prigogine–Flory–Patterson theory (PFP model) was applied to 1,1,2,2-tetrachloroethane-containing binary mixtures.