Determination of Abraham model solute descriptors for 2-ethylanthraquinone based on measured solubility ratios.

The Abraham model is used to calculate the numerical values of the solute descriptors for 2-ethylanthraquinone from experimental solubilities. The correlations are log ( [image omitted] / [image omitted]) = c + e · E + s · S + a · A + b · B + v · V, log ( [image omitted] /CG) = c + e · E + s · S + a · A + b · B + l · L, where [image omitted] and [image omitted] refer to the solute solubility in the organic solvent and water, respectively, CG is a gas phase concentration and E, V, A, B, S and L denote the solute descriptors. The remaining symbols in the above expressions are known solvent coefficients, which have been determined previously for a large number of gas/solvent and water/solvent systems. The Abraham solvation parameter model was found to describe the measured solubility data to within an overall standard deviation of 0.123 log units. [ABSTRACT FROM AUTHOR]