Equations for the Correlation and Prediction of Partition Coefficients of Neutral Molecules and Ionic Species in the Water–Isopropanol Solvent System

We use literature data on solubilities of 46 compounds in the water–isopropanol (IPA) system to obtain the corresponding partition coefficients, P, for transfer from water to water–IPA mixtures. We have then used our previously constructed linear free energy equation to obtain equations that correlate log10 P at water–IPA intervals across the entire water–IPA system. These equations can then be used to predict partition coefficients and...