Thermodynamic Modeling of p-Hexyloxyphenyl Esters of p-Alkylobenzoic Acid–Solvent Systems

Abstract

The authors investigate the solubility curves of nematic phenyl benzoates (p-hexyloxyphenyl esters of p-alkyloxybenzoic acids, n-alkyl = n-butyl and n-heptyl) in organic solvents of various kinds (n-hexane, n‑heptane, methanol, ethanol, 1-propanol, 2-propanol, 1,4-dioxane, diethyl ether, tert-butyl methyl ether, and ethyl acetate). The solubility of phenylbenzoates were estimated using the parameters of solubility. A scheme was proposed for estimating the enthalpy of vaporization, molar volume, and Hildebrand solubility parameter of aromatic esters of benzoic acid at 298.15 K.