Determination of Abraham model solute descriptors for 4-<i>tert</i>-butylbenzoic acid from experimental solubility data in organic mono-solvents

Abstract

Mole fraction solubilities are determined at 298 K for 4-tert-butylbenzoic acid dissolved in 11 different alcohols (1-butanol, 2-butanol, ethanol, 1-heptanol, 1-hexanol, 2-methyl-1-propanol, 2-methyl-2-propanol, 3-methyl-1-butanol, 1-pentanol, 1-propanol, and 2-propanol), in three different alkoxyalcohols (2-butoxyethanol, 2-ethoxyethanol, and 2-methoxyethanol), in five different alkyl alkanoates (butyl acetate, ethyl acetate, methyl acetate, pentyl acetate, and propyl acetate), in one cyclic ether (1,4-dioxane) and in two different alkanenitriles (acetonitrile and propanenitrile). Results of the experimental solubilities are used to calculate Abraham model solute descriptors for the monomeric form of 4-tert-butylbenzoic acid. The calculated Abraham model solute descriptors back-calculated the observed solubility data to within 0.079 log units.