Isobaric Vapor-Liquid Equilibria for Three Binary Systems Containing Acetylacetone and Alcohol

Abstract

Isobaric vapor-liquid equilibrium data for three binary systems containing acetylacetone and methanol, ethanol, or 1-propanol were measured at a pressure of 100 kPa in a recirculation still. The analysis of equilibrium composition was carried out by a gas chromatograph equipped with TCD. In general, acetylacetone is tautomeric, showing an equilibrium mixture of keto-form (30%) and enol-form (70%). In the present study, however, acetylacetone was treated as a pure substance. The experimental vapor-liquid equilibrium data obtained were correlated by the Wilson equation with corrections for vapor-phase nonideality.