A table is given of the compounds of low volatility, whose experimental solubilities in supercritical carbon dioxide have been published up to the end of 1989, with the temperature and pressure ranges of the experimental measurements, the experimental method, and references to the source of data. The data for pure compounds, which were presented in tabular form in the original publications, are shown in a series of figures along with correlation lines for each isotherm. The method of correlation was to fit the experimental data for each isotherm, in the form of the natural logarithm of the product of mole fraction and pressure, to a linear function of density above a pressure of 100 bars. The constants obtained from the fitting procedures are given in a table. Procedures for estimating, from these constants, the solubilities of the compounds at temperatures and pressures different from those of the experimental data are suggested.

The solubility of anthracene, pyrene, chrysene, perylene, and carbazole were determined at temperatures ranging from 298 K to 498 K and pressures from 30 bar to 60 bar in subcritical (superheated) water. Increasing temperature up to 498 K increased solubilities by 5 orders of magnitude. For example, increasing the temperature from 298 K to 498 K increased the mole fraction solubility of chrysene from (0.63 ( 0.08) × 10 -9 to (75 800 ( 4000) × 10 -9 . While large increases in pressure result in lower solubilities, over the narrow range of pressures studied, pressure had a minimal effect. Solubilities as a function of temperature were estimated on the basis of simplifying assumptions and empirical correlations based on data presented in this and previously reported work. The method only requires knowledge of ambient temperature solubility. Estimated values generally agree with experimental results within a factor of 4, even over 5 orders of magnitude in solubility changes.

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