Use of chemical probes for the characterization of solvent mixtures. Part 1. Completely non-aqueous mixtures

The use of chemical probes for the characterization of chemical properties (polarity, hydrogen bonding ability) is explored for solvent mixtures not involving water as a component. Preferential solvation is more important in such mixtures than in those that contain water. This implies that contrary to common practice, polarity indices etc. obtained in the mixtures with a given probe may not be generally valid for the solvation of other solutes. Still, approximate values of these properties can be obtained by judicious use of such probes.