Thermodynamic study of organic compounds in octan-1-ol. Processes of transfer from gas and from dilute aqueous solution

Abstract

Free energies and enthalpies of solvation of water and some hydrocarbons (hexane, cyclohexane), ethers (diethyl ether, tetrahydrofuran) and ketones (propanone, pentan-3-one, cyclopentanone) in octan-1-ol have been determined at 298.15 K from vapour-pressure measurements of dilute solutions and from limiting heats of solution. These solvation functions in octanol have been used together with the corresponding hydration functions in order to obtain water–octan-1-ol partition coefficients and their dependence on temperature. A comparison is made with the practical partition coefficients relative to mutually saturated solvents.