A flow-type apparatus was constructed to measure the solubilities of myristic acid (tetradecanoic acid), palmitic acid (hexadecanoic acid), and cetyl alcohol (hexadecanol) in supercritical carbon dioxide at 35-degrees-C from 8.1 to 22.8, 9.9 to 20.6, and 8.9 to 21.8 MPa, respectively. The logorithm of the enhancement factor was plotted against the density of carbon dioxide, and a good linear relationship was observed for each system.