Isothermal v.l.e. and excess molar Gibbs energy of binary and ternary mixtures containing diisopropyl ether,n -heptane and isopropanol at T = 313.15 K

Abstract (Vapour  +  liquid) equilibrium of {diisopropyl ether (DIPE)  +  n - heptane  +  isopropanol }, {diisopropyl ether (DIPE)  +  n -heptane}, {diisopropyl ether (DIPE)  +  isopropanol } and ( n - heptane  +  isopropanol ) were measured at T  =  313.15 K. Data reduction by Barker’s method provides correlations for the excess molar Gibbs energy G m E using the Margules equation for the binary systems and the Wohl expansion for the ternary. The Wilson, NRTL, and UNIQUAC models were applied successfully to both the binary and the ternary systems reported here.