The use of supercritical fluid chromatography for determining partial molar volumes of some substances (linear, cyclic and aromatic hydrocarbons, benzaldehyde) at infinite dilution in supercritical CO2 is presented and discussed. Partial molar volumes at infinite dilution are obtained from the variation of the retention properties with the density of mobile phase at 313.15 K and in the pressure range from 100 to 280 bar.
