Phase equilibrium in binary mixtures formed by benzene, perfluorobenzene, and dimethyl sulfoxide

The liquid-vapor phase equilibria in the benzene-perfluorobenzene, benzene-dimethyl sulfoxide, and perfluorobenzene-dimethyl sulfoxide binary systems at atmospheric pressure and the liquid-solid phase equilibrium in the benzene-perfluorobenzene binary system were studied. The liquid-vapor activity coefficients in binary systems were calculated by the Wilson equation. The liquid-solid equilibrium was described by second and third-degree polynomials.