Experimental and Nitta–Chao model prediction of high pressure density of p-xylene with dialkyl carbonates or n-alkanes

•High pressure density of p-xylene with dialkyl carbonates or n-alkanes was measured.•Binary mixtures were correlated using a modified Tait equation.•Excess data were predicted by Nitta–Chao group contribution model.•Intermolecular interactions based on the derived properties trend were discussed.

New data of high pressure density have been reported for p-xylene pure component and its binary mixtures with dimethyl carbonate, diethyl carbonate, n-octane and n-decane at (288.15, 298.15 and 308.15) K and (0.1, 5, 10, 20, 30 and 40) MPa and they have been compared with those available in the literature. The high pressure density has been correlated and predicted using a modified Tait equation and Nitta Chao group contribution model respectively. The derived thermophysical properties such as isothermal compressibility (κT), isobaric thermal expansivity (αP) and internal pressure (π) have been also calculated.