Isothermal vapor-liquid equilibria were measured in a range of pressures from 38.8 kPa to 84.4 kPa for 2-propanol + 2-ethoxy-2-methylpropane and ethyl ethanoate + 2-ethoxy-2-methylpropane at 333 K and 2-propanone + 2-ethoxy-2-methylpropane at 323 K with a circulation still. The liquid- and condensed vapor-phase samples were analyzed by gas chromatography. The experimental data were correlated with the Wilson activity coefficient model.