Corresponding-states correlation for compressed liquid density of mixtures

Abstract

Our previous corresponding-states correlation for the prediction of the compressed liquid density of pure substances has been extended to mixtures. The correlation requires the values of critical constants, acentric factor, freezing temperature, liquid density at the freezing point, and an adjustable parameter to determine the saturated liquid densities. The mixtures applied with this correlation are liquefied noble gas and inorganic gas mixtures, mixtures of saturated, aromatic, and aliphatic hydrocarbons, refrigerant mixtures, and mixtures of strongly hydrogen-bonded and polar fluids. The predicted results are compared with the well-known corresponding-states liquid densities by Hankinson et al. and with the correlation recently proposed by Nasrifar et al. It is shown that the present correlation works better than both of them.