Investigations of the relationship between molecular structure and chromatographic parameters : IX. Extraction of phenolic 2-benzoylbenzoic acids with cyclohexane solutions of n-hexanol and oleic acid

Abstract

Fifteen hydroxyl derivatives of 2-benzoylbenzoic acid were chromatographed in a series of solvent systems of the type (cyclohexane + polar solvent)-buffer solution. n-Hexanol and oleic acid were used as polar associated solvents (S). From the slopes of the R M versus log [S] plots, the probable molecular mechanism of liquid-liquid partition and especially solvation by associated solvents were established.