SOLUBILITIES OF (1-HEXANOL, OR 1,2-HEXANEDIOL, OR 2-HYDROXYPROPANOIC ACID ETHYL-ESTER, OR 2-HYDROXYHEXANOIC ACID ETHYL-ESTER) IN SUPERCRITICAL CO2

Solubilities of 1-hexanol, or 1,2-hexanediol, or 2-hydroxypropanoic ac id ethyl ester, or 2-hydroxyhexanoic acid ethyl ester in supercritical CO2 have been measured at T=(311, 318, and 323, or 328)K in the press ure range from 1 MPa to 8 MPa. The measurements have been performed us ing a flow-type equipment coupled with a novel analytical procedure. A n accurate correlation method for the solubility of low volatile subst ances in supercritical CO2 based on the equilibrium condition for the solute has I,een proposed and successfully applied for the interpolati on of our experimental results. (C) 1998 Academic Press.