Based on the theory of chemical association equilibria

a general model for calculating solubilities of solid solutes in a supercritical fluid (SCF) with entrainers was derived asThis model could be modified and simplified into the following two semi - empirical correlationsModel 1:(No entrainer)(With entrainer)Model 2:where E is an enhancement factor of solubilities. The two models for predicting solubilities of solid solutes in a SCF with entrainers correlate the experimental data from literature and this work satisfactorily.