A new solvent polarity scale, the Taft π* scale, is explored for its utility in predicting partition coefficients and solubility parameters of non-hydrogen-bonding, non-aromatic solvents. A function of the dielectric constant of the solvent and the dipole moment and molar volume of the solute is used to obtain a priori estimates of orientation (permanent dipole-permanent dipole) solubility parameters. The correlation coefficient between measured and predicted orientation solubility parameters is 0.97; the slope is close to unity.
Bibliographical noteFunding Information:
I would like to thank Mr. James Brady and Professor Maurice Kreevoy of tbis department for many helpful conversations about this work, and the Nationai Institute of Occupationai Safety and Health for partial financial support (ROI-OH-00876).