  The solubility of a "heavy" alkane (solute) in a "light" alkane (solvent) is
generally temperature dependent. Moreover, it is determined by the molar masses
of the solute and solvent. In the current paper, published solubility data for
binary normal-alkane mixtures is reviewed (solid-liquid equilibrium). A total
of 43 unique solute-solvent data-sets, obtained from a total of 24 published
experimental studies, are collected and presented in a systematic manner. Based
on thermodynamic considerations and the experimental data, it is demonstrated
that there is a log-linear relationship between the solubility and the
temperature in the dilute range. Linear regression is employed to 1) obtain
data-set-specific solubility-temperature best-fit parameters and 2) obtain a
general correlation between the solubility and the solvent and solute molar
masses and the temperature. Finally, it is demonstrated that the developed
correlation carries predictive power even for multi-component mixtures by
utilizing solvent and solute average molar masses.
