SOLUBILITY OF PYRENE IN BINARY ALKANE-PROPANOL AND ALKANE+2-PROPANOL SOLVENT MIXTURES(1)

Experimental solubilities are reported for pyrene in 12 binary mixture s containing 1-propanol or 2-propanol with hexane, heptane, octane, cy clohexane, methylcyclohexane, and 2,2,4-trimethylpentane at 26-degrees -C. Results of these measurements are used to test two mathematical re presentations based upon the combined nearly ideal binary solvent (NIB S)/Redlich-Kister equation and modified Wilson model. For the systems studied, the combined NIBS/Redlich-Kister equation was found to provid e the better mathematical representation with deviations between exper imental and back-calculated values being on the order of +/- 1.3% or l ess.