SOLUBILITY OF SQUALANE, DINONYL PHTHALATE AND GLYCEROL IN SUPERCRITICAL CO2

The solubilities of three low-volatile liquids were measured in superc ritical and liquid carbon dioxide at 7-28 MPa and 296-333 K. Solutes o f different polarities were selected, namely non-polar squalane, polar glycerol, and dinonyl phthalate of medium polarity. Dynamic method of measurement with gravimetrically determined amount of the extracted s olute was applied. The solubilities were correlated with density of pu re carbon dioxide, using the Adachi-Lu equation. The equation represen ts the experimental solubilities with relative standard deviation 2-3% . (C) 1997 Elsevier Science B.V.