Updated Abraham model correlations to describe enthalpies of solvation of solutes dissolved in heptane, cyclohexane and N,N-dimethylformamide

ABSTRACT

A search of the published chemical and engineering literature found enthalpy of solution data for an additional 71, 39 and 46 organic compounds dissolved in heptane, cyclohexane and N,N-dimethylformamide, respectively. The newly retrieved enthalpy of solution data was converted to enthalpy of solvation values, ΔH_solv, using standard thermodynamic relationships. Updated Abraham model correlations were derived for describing gas-to-heptane, gas-to-cyclohexane and gas-to-N,N-dimethylformamide enthalpies of solvation by combining the additional values to our existing heptane, cyclohexane and N,N-dimethylformamide ΔH_solv databases. The updated Abraham model correlations for heptane, cyclohexane and N,N-dimethylformamide described the observed ΔH_solv values to within overall standard deviations of less than 3 kJ/mole.

KEYWORDS:

• Enthalpies of solvation
• Abraham model correlations
• organic solutes
• heptane solvent
• cyclohexane solvent
• NN-dimethylformamide solvent

Disclosure Statement

No potential conflict of interest was reported by the authors.

Supplementary material

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