Thermodynamic excess properties of 3,5- and 2,6-dimethylpyridine with cyclohexane measurement and prediction

The vapour pressures of liquid (3,5; 2,6)-dimethylpyridine with cyclohexane mixtures were measured by a static method in the range of 283.15–353.15 K. The pure components vapour pressures data and those of the mixtures were correlated with the Antoine equation. The molar excess Gibbs energies, calculated from the vapour–liquid equilibrium data compared satisfactorily with group contribution method (DISQUAC).