Isobaric Vapor-Liquid Equilibria in the System Methyl Propanoate + n-Butyl Alcohol

Abstract

Isobaric vapor-liquid equilibria were determnated at 74.66,101.32, and 127.99 kPa for binary mixtures containing methyl propanoate + n-butyl alcohol by using a dynamic still with vapor and liquid circulation. No azeotrope was detected. The data were found to be thermodynamically consistent according to the point to point test. Application of the group-contribution models ASOG, UNIFAC, and modified UNIFAC to the activity coefficients at the three pressures studied gives average errors of less than 10, 11, and 3%, respectively.