Calorimetric and phase equilibrium data for linear carbonates + hydrocarbons or + CCl 4 mixtures. Comparison with disquac predictions

Abstract

The disquac interaction parameters for the linear organic carbonate—alkane, carbonate—cyclohexane, carbonate—benzene or —toluene, and carbonate—CCl 4 contacts are revised on the basis of new experimental data on vapor—liquid equilibria for dimethyl or diethyl carbonate + n-alkane mixtures. The new parameters differ slightly from the previous ones. The main conclusions remain valid. The quasichemical interchange coefficients for carbonate—alkane or —cyclohexane contacts, and the purely dispersive interchange coefficients for carbonate—benzene or —toluene and carbonate—CCl 4 contacts, show a relatively weak steric effect. The model provides a fairly consistent description of low pressure fluid phase equilibria (vapor—liquid, liquid—liquid and solid—liquid) and related excess functions (Gibbs energy and enthalpy) using the same set of parameters.