EXCESS MOLAR ENTHALPIES, DENSITIES, AND EXCESS MOLAR VOLUMES OF BINARY-MIXTURES CONTAINING ESTERS OF CARBONIC-ACID AT 298.15 AND 313.15 K

Excess molar enthalpies, H-m(E), densities, rho, and excess molar volumes, V-m(E), of the binary mixtures propylene carbonate + dimethyl carbonate, propylene carbonate + diethyl carbonate and dimethyl carbonate + diethyl carbonate have been determined at 298.15 and 313.15 K. The excess molar enthalpies are positive for all mixtures while the excess molar volumes are positive only for the dimethyl carbonate + diethyl carbonate system. The absolute values of V-m(E) for the mixtures containing propylene carbonate increase with the increase of temperature while for dimethyl carbonate + diethyl carbonate a smaller variation with temperature is noted.