Vapor-Liquid Equilibria of Methyl Ethyl Ketone‒Diethyl Ketone, Methyl Ethyl Ketone‒Methyl Isobutyl Ketone, and Diethyl Ketone‒Methyl Isobutyl Ketone Systems

Vapor-liquid equilibrium data were determined at 760 mm Hg for the binary systems methyl ethyl ketone‒diethyl ketone, methyl ethyl ketone‒methyl isobutyl ketone, and diethyl ketone‒methyl isobutyl ketone. The three systems presented small deviations from ideal solution behavior. The activity coefficients were correlated by the Redlich-Kister correlation. Boiling points were predicted by an empirical expression to within a maximum error of ±0.25 °C and a mean error of ±0.05 °C.