Volumetric properties of carbon dioxide + ethanol mixtures at 313.15 K were measured, using the vibrating-tube Anton Paar DMA 512P density meter. In the present experiments, no analytical instrument was required. The saturated pressures of carbon dioxide + ethanol mixtures at 313.15 K were measured by the synthetic method. The experimental data obtained were correlated with the density equation, the Soave-Redfich-Kwong (SRK) equation of state, and the pseudocubic equation of state.