(VAPOR PLUS LIQUID) EQUILIBRIA FOR (METHANOL PLUS BUTYL ACETATE), (VINYL-ACETATE PLUS BUTYL ACETATE), (METHANOL PLUS ISOBUTYL ACETATE), AND(VINYL-ACETATE PLUS ISOBUTYL ACETATE)

Isobaric (vapour + liquid) equilibria were determined at p = 101.3 kPa for(methanol + butyl acetate), (methanol + isobutyl acetate), (vinyl acetate + butyl acetate), and (vinyl acetate + isobutyl acetate). The thermodynamic consistency of the experimental data was checked by usin g a modified Dechema test. The activity coefficients were correlated w ith Margules, van Laar, Wilson, NRTL, and Wilson equations. Among the solvents chosen as potential extractive distillation entrainers, none shows azeotropy. It was found more appropriate to use butyl acetate as solvent for the extractive distillation from an economical perspectiv e. (C) 1998 Academic Press.