EXPERIMENTAL VLE AT 101.32 KPA IN BINARY-SYSTEMS COMPOSED OF ETHYL METHANOATE AND ALKAN-1-OLS OR ALKAN-2-OLS AND TREATMENT OF DATA USING A CORRELATION WITH TEMPERATURE-DEPENDENT PARAMETERS

New experimental VLE data of five binary ethyl methanoate + alkan-1-ol or +alkan-2-ol mixtures are presented which have been obtained isobar ically at 101.32 kPa using a dynamic equilibrium apparatus. All system s verify the thermodynamic consistency with one version of the point-t o-point test and present a positive deviation from ideality in almost all concentration range, Several equations are used in the treatment o f VLE data, and a new correlation employed in this work using temperat ure-dependent coefficients appear to be also suitable. Activity coeffi cients calculated from experimental data have been compared with predi ctions of several group contribution models giving place to a mean err or less than 7%. The azeotrope experimentally detected in the mixture ethyl methanoate(1)+ ethanol(2) at x(1) = 0.956, T = 327.2 K was also well predicted by the versions used of UNIFAC. (C) 1998 Elsevier Scien ce B.V. All rights reserved.