Vapor-liquid equilibria and density measurement for binary mixtures of toluene, benzene, o-xylene, m-xylene, sulfolane and nonane at 333.15 K and 353.15 K Chen, W.K.; Lee, K.J.; Ko, J.W.; Chang, C.M.; Hsiang, D.; Lee, L.S.; Fluid Phase Equilibria 2010, 287, 126-133