Prediction of anthracene solubilities in binary alcohol+alcohol solvent mixtures using alcohol-specific mobile order theory stability constants

Experimental solubilities are reported for anthracene dissolved in six binary mixtures containing 2-methyl-I-pentanol with l-propanol, 2-propanol, l-butanol. 2-butanol. 2-methyl-l-propanol, and 1-octanol at 25~C. Results of these measurenaents, along with previously published solubility data for anthracene in binary alcohol +alcohol solvent mixtures, are used to test the limitations and applications of expressions derived from mobile order theory and the Kretschmer-Wiebe association model. Alcohol-specific mobile order theory association constants are calculated from vapor liquid equilibrium data lbr binary alkane + alcohol solvent mixtttres and used in the solubility predictions. For the 57 systems considered, both models provided very accurate predictions of the anthracene solubilities, with an overall average absolute deviation between measured and calculated values being 1.7 and 1.2% Ibr mobile order theory and the Kretschmer-Wiebe association model, respectively.