抄録
Densities of dimethyl ether (DME)+ethanol liquid mixtures were measured at 20℃ under high pressure up to 40 MPa. Densities of DME+ethanol mixtures decreased with increasing DME and increased with increasing pressure at 20℃. The composition dependence of the excess molar volumes showed concaved shape and had a minimum around 50 mol% of DME at any pressures studied. The hydrogen bond between the oxygen of a DME molecule and the −OH group of an ethanol molecule makes an important role in the volume change in DME+ethanol liquid mixtures at 20℃ under high pressure.
