Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
A New Relationship on the Partition Equilibrium of Carboxylic Acids between 1-Octanol/Water and Benzene/Water Systems
Hiromichi YAMADATetsuyoshi NAITOKazuto MIWANoriyuki TACHIHiroko WADA
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1997 Volume 13 Issue 6 Pages 897-902


The partition constants of a number of carboxylic acids were determined for the partition systems using 1-octanol and benzene as a solvent, and the dimerization constants of carboxylic acids in the benzene phase were also determined. A linear relationship between the partition constants (log KD, HA) of carboxylic acids and the molar volume of the respective carboxylic acids was found. A new good relationship on the partition equilibrium of carboxylic acids was found between the partition systems using 1-octanol and benzene, that is, a good linear relationship exists between the values of (log K2, HA+2log KD, HA) for benzene/water system and the values of log KD, HA for 1-octanol/water system, irrespective of the kinds of carboxylic acids.

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