Vapor–liquid equilibria for methanol+pentyl acetate, vinyl acetate+pentyl acetate, and methanol+isopentyl acetate

Isobaric vapor–liquid equilibria were determined at 101.3 kPa for methanol+pentyl acetate, methanol+isopentyl acetate, and vinyl acetate+pentyl acetate. The thermodynamic consistency of the experimental data was checked by using a modified Dechema test. The activity coefficients were correlated with Margules, van Laar, Wilson, NRTL, and Wilson equations. None of the systems shows azeotropy. Pentyl acetate is a potential extractive distillation entrainer of the azeotropic mixture methanol+vinyl acetate.