Solubility of phenanthrene in organic nonelectrolyte solvents. Comparison of observed versus predicted values based upon Mobile Order theory

Experimental solubilities are reported at 25.0 degrees C for phenanthrene d issolved in 41 different organic nonelectrolyte solvents containing ether, carbonyl, hydroxy, chloro, amino, ester, methyl and tert-butyl functional g roups. Results of these measurements are used to test the applications and limitations of expressions derived from Mobile Order theory. For the 31 sol vents for which predictions could be made, computations show that Mobile Or der theory does provide fairly reasonable estimates of the saturation mole fraction solubilities. Average absolute deviation between predicted and obs erved values is 41.3% (excluding acetonitrile). In comparison, the average absolute deviation is 1610% when ideal solution behavior is assumed. Also r eported are experimental solubilities at 26 degrees C for pyrene dissolved in 1-hexanol, 1-heptanol, ethylbenzene, aniline, and 2-butanone.