A flow-type isothermal microcalorimeter was used to measure excess molar enthalpies, H-E, for the binary mixtures of dimethyl carbonate with o-xylene, m-xylene, p-xylene, ethylbenzene, or ethyl benzoate at 298.15 K and 10.2 MPa. The experimental H-E values are positive for all the binary mixtures over the entire composition range. In comparison with the values of H-E at 0.1 MPa, the excess enthalpies were found to decrease with increasing pressure for these binary systems, except for dimethyl carbonate + ethylbenzene. The maximum H-E values are in the range 356.8 J.mol(-1) to 652.8 J.mol(-1), which are located at about x(i) = 0.5. The experimental H-E data were correlated accurately with the Redlich-Kister polynomial equation. The Peng-Robinson and the Cubic Chain-of-Rotators equations of state with the binary interaction parameters determined from H-E data at atmospheric pressure were adopted to calculate the excess enthalpies at 10.2 MPa. The Cubic Chain-of-Rotators equation with two binary interaction parameters yielded better results.