(P, V, T, x) Measurements of the system benzene + 1,3,5-trimethylbenzene at temperatures from 298.15 to 328.15 K and at pressures up to 40 MPa

Densities were measured for the liquid benzene and 1,3,5-trimethylbenzene, and for nine of their mixtures at four temperatures between 298.15 and 328.15 K and at pressures up to 40 MPa. An apparatus for density measurements of liquids and liquid mixtures whose main part is a high-pressure vibrating-tube densimeter working in a static mode was used for the measurement. The density data were fitted to the Tait equation and the isothermal compressibilities were calculated with the aid of this equation. Excess molar volumes were also calculated from the densities and fitted to the Redlich–Kister equation.