Density and viscosity results for diethyl adipate (DEA) along eight isotherms from (303.15 to 373.15) K and at pressures up to 20 MPa are presented. The measurements of both properties were performed simultaneously using a vibrating-wire instrument operated in the forced mode of oscillation. The overall uncertainties of these results are +/- 2.0 % in viscosity and +/- 0.2 % in density. The data obtained were correlated as functions of pressure and temperature. The maximum absolute deviation and the average absolute deviation of the measurement data from the correlation for viscosity are 1.2 % and 0.4 %, respectively, and for density are 0.06 % and 0.016 %.