SOLUBILITY OF PYRENE IN BINARY ALCOHOL PLUS CYCLOHEXANOL AND ALCOHOL PLUS 1-PENTANOL SOLVENT MIXTURES AT 299.2 K

Experimental solubilities are reported for pyrene dissolved in five bi nary alcohol + cyclohexanol and seven binary alcohol + l-pentanol solv ent mixtures at 26 degrees C. Alcohol cosolvents include l-propanol, 2 -propanol, l-butanol, 2-butanol, 2-methyl-1-propanol, S-methyl-l-butan ol, and 2-pentanol. Results of these measurements are used to test two mathematical representations based upon the combined nearly ideal bin ary solvent (NIBS)/Redlich-Kister equation and modified Wilson model. For the 12 systems studied, both equations were found to provide an ac curate mathematical representation of the experimental data, with an o verall average absolute deviation between measured and calculated valu es being on the order of 0.5%.