Infinite-Dilution Partition and Activity Coefficients for Alkanes and Bromo- and Chloroalkanes in Squalene-Dinonyl Phthalate Mixtures at 30 °C

Using gas-liquld chromatography, we obtained infinite-dilution partition and activity coefficients at 30.0 °C for n-hexane, n-heptane, 3-methylpentane, 2,4-dimethylpentane, and bromo- and chloroalkanes in pure squalene, in pure dlnonyl phthalate, and in three mixtures thereof. Where appropriate, the results are contrasted with those from previous studies. The values of the partition coefficients were tested for their agreement with the Purnell-Andrade equation and with an equation derived by Laub, Martlre, and Purnell on the basis of conventional models of solution. From fits of the data to the latter equation, solute-sovent and solvent-solvent interaction parameters were calculated.