SOLUBILITY OF ANTHRACENE IN BINARY ALCOHOL PLUS ALKOXYALCOHOL SOLVENTMIXTURES - COMPARISON OF OBSERVED VERSUS PREDICTED VALUES BASED UPON MOBILE ORDER THEORY

Experimental solubilities are reported for anthracene dissolved in eig ht binary mixtures containing 2-isopropoxyethanol with 1-propanol, 2-p ropanol, 1-butanol, 2-butanol, 1-pentanol, 2-pentanol, 3-methyl-1-buta nol, and 1-octanol at 25 degrees C. Results of these measurements, alo ng with previously published solubility data for anthracene in binary alcohol + alkoxyalcohol (2-methoxyethanol, 2-ethoxyethanol, 2-propoxye thanol, 2-butoxyethanol, 3-methoxy-1-butanol) solvent mixtures, are us ed to test the limitations and applications of expressions derived fro m Mobile Order theory. For the 50 different binary solvent systems con sidered, the derived expressions were found to provide reasonably accu rate predictions for the observed anthracene solubility behavior, with the average absolute deviation between measured and predicted values being on the order of 3% or less. A single numerical value of K-eq = 5 000 cm(3) mol(-1) was assumed for all self-association and cross-assoc iation hydrogen-bond stability constants.