The isobaric vapor–liquid equilibrium measurements for the systems of 2-butyl acetate with three chemicals (methanol, 2-butyl alcohol, methyl acetate) were determined respectively in a modified Rose still at 101.33 kPa. Thermodynamic consistency of the three binary vapor–liquid equilibrium data had been confirmed by Herington methods. The three groups of experimental data were all correlated with NRTL and Wilson models, respectively. The binary interaction parameters of both models had been obtained by the simplex method. The NRTL and Wilson equations showed low deviation with respect to the experimental data.

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