Polarity of oligooxyethylene derivatives of alcohols, thio alcohols and alkylamines as measured by gas chromatography

The polarities of oligooxyethylene derivatives of alcohols, thio alcohols and alkylamines were determined by gas chromatography. Relationships between empirical, thermodynamic and dispersive force polarity parameters are discussed. The influence of the structures of the compounds lengths of oligooxyethylene and hydrocarbon chains, heteroatom linked to the alkyl group(s), distribution of carbon atoms in alkyl chains and the type of the group terminating the molecule] was examined. The average structural increments of the considered parameters for characteristic structural fragments were calculated and used in the prediction of the polarities of compounds from their formulae.