Isothermal (vapour + liquid) equilibria of (methanol or ethanol + butan-2-ol + acetonitrile + benzene)

Abstract The (vapour + liquid) equilibria of (methanol + butan-2-ol + acetonitrile + benzene) and (ethanol + butan-2-ol + acetonitrile + benzene), measured with a modified Boublik vapour-recirculating still at the temperature 333.15 K, are reported. The experimental results are analyzed using the UNIQUAC formalism with only binary parameters.