SOLUBILITY OF PYRENE IN BINARY ALCOHOL PLUS 1-PROPANOL AND ALCOHOL PLUS 2-PROPANOL SOLVENT MIXTURES

Experimental solubilities are reported for pyrene dissolved in 11 bina ry mixtures containing 1-propanol and 2-propanol with 1-butanol, 2-but anol, 2-methyl-1-propanol, 3-methyl-1-butanol, and 1-octanol at 26 deg rees C. Results of these measurements are used to test two mathematica l representations based upon the combined nearly ideal binary solvent (NIBS)/Redlich-Kister equation and modified Wilson model. For the syst ems studied, both equations were found to provide a fairly accurate ma thematical representation of the experimental pyrene solubilities, wit h an average absolute deviation between experimental and back-calculat ed values of ca. +/-0.5%.