Updated Abraham Model Correlations To Describe Enthalpies Of Solvation Of Solutes Dissolved In Heptane, Cyclohexane And N,N-Dimethylformamide

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, Delta H-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 Delta H-solv databases. The updated Abraham model correlations for heptane, cyclohexane and N,N-dimethylformamide described the observed Delta H-solv values to within overall standard deviations of less than 3 kJ/mole.