The influence of the temperature on the liquid–liquid equilibrium of the ternary system 1-butanol–1-propanol–water

Liquid–liquid equilibrium data for the ternary system 1-butanol–1-propanol–water have been determined experimentally at 25, 50, 85 and 95°C. The results obtained have been correlated simultaneously by the UNIQUAC method obtaining two sets of interaction parameters: one of them independent of the temperature and the other with a linear dependence. Both sets of parameters fit the experimental results well which is an improvement on using parameters depending of the temperature of 15%.