Abraham model correlations for transfer of neutral molecules and ions to sulfolane

Data have been compiled from the published literature on the partition coefficients of solutes and vapors into anhydrous sulfolane. The logarithms of the water-to-sulfolane partition coefficients, log P, and gas-to-sulfolane partition coefficients, log K, were correlated with the Abraham solvation parameter model. The derived correlations described the observed log P and log K values for solutes dissolved in sulfolane to within average standard deviations of 0.14 log units or less. The log P correlation was extended to include the partition of ions by inclusion of a cation-solvent and an anion-solvent term.

► Gas-to-sulfolane partition coefficient data are compiled for 77 nonelectrolyte solutes.
► Water-to-sulfolane partition coefficient data are compiled for 77 nonelectrolyte solutes.
► Mathematical correlations are derived for predicting partition coefficients of nonelectrolyte solutes in sulfolane.
► The water-to-sulfolane correlation was extended to include the partition of ions.