Experimental Reexamination of Selected Partition Coefficients from Rohrschneider's Data Set

Jung Hag Park, Abul Hussam, Pascal Couasnon, David Fritz, Peter W Carr

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Abstract

Rohrschnelder determined the partition coefficients of six prototypical solutes In a wide variety of solvents of interest for chromatographic, polymeric, and general chemical purposes. His data set, due primarily to its scope, has been used as a “benchmark” against which many models of solution behavior have been tested. As the accuracies of various models and correlations have improved, experimental errors in excess of 15% have been Inferred. The present study Is devoted to the experimental measurement of many of the solute-solvent pairs examined by Rohrschnelder and a limited number of additional solvents. An improved methodology which we believe Is substantially more accurate (better than 5% in general) and precise (2% at worst) Is employed.

Original languageEnglish (US)
Pages (from-to)1970-1976
Number of pages7
JournalAnalytical chemistry
Volume59
Issue number15
DOIs
StatePublished - Jan 1 1987

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