Collect. Czech. Chem. Commun. 1989, 54, 586-601

Liquid-liquid equilibrium in the water-ethanol-toluene system. Correlation of equilibrium data

Josef P. Novák, Jaroslav Matouš, Květuše Říčná and Vladimír Kubíček

Department of Physical Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6


Liquid-liquid equilibrium data in the water-ethanol-toluene system were correlated by the superposition of the Wilson and Redlich-Kister equations with a ternary term. The correlation of both homogeneous binary systems was taken from the literature. The ternary liquid-liquid equilibrium data were at all temperatures satisfactorily described on using only three ternary parameters determined from the equilibrium data at 50 °C. The parameters obtained by the correlation yield also a good estimate of boiling point and composition of homogeneous azeotropic mixture.