In this work the vapor-liquid equilibria for nine binary mixtures (methanol + acetic acid, methanol + methyl acetate, methanol + water, methyl acetate + acetic acid, water + acetic acid, ethyl acetate + acetic acid, ethanol + acetic acid, ethanol + ethyl acetate and ethanol + water) at subatmospherical pressure (580 mmHg) is presented. Peng-Robinson Stryjek-Vera equation of state coupled with the Wong-Sandler mixing rules were used for predicting phase equilibria of these mixtures. The measurements were developed using an apparatus with recirculation that can also be employed for liquid-vapor equilibrium with chemical reaction. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.