Ternary (liquid + liquid) equilibria for the extraction of ethanol, or 2-propanol from aqueous solutions with 1,1′-oxybis(butane) at different temperatures

(Liquid   +   liquid) equilibrium data for the ternary systems of {water   +   ethanol   +   1,1′-oxybis(butane)} and {water   +   2-propanol   +   1,1′-oxybis(butane)} at T   =   (293.15,   298.15,   303.15,   308.15)   K have been measured under atmospheric pressure. The experimental results were correlated by using the modified and extended UNIQUAC models. Distribution coefficients and separation factors of ethanol and 2-propanol were calculated and discussed in detail. The temperature influence on liquid-phase regions was analysed.