Vapor-liquid equilibria and excess volumes of the binary systems ethanol plus ethyl lactate, isopropanol plus isopropyl lactate and n-butanol plus n-butyl lactate at 101.325 kPa

Isobaric vapor-liquid equilibrium data have been experimentally determined at 101.3 kPa for the binary systems ethanol + ethyl lactate, isopropanol + isopropyl lactate and n-butanol + n-butyl lactate. No azeotrope was found in any of the systems. All the experimental data reported were thermodynamically consistent according to the point-to-point method of Fredenslund. The activity coefficients were correlated with the NRTL and UNIQUAC liquid-phase equations and the corresponding binary interaction parameters are reported. The densities and derived excess volumes for the three mixtures are also reported at 298.15 K. (c) 2005 Elsevier B.V. All rights reserved.