EXCESS MOLAR VOLUMES FOR DIMETHYL CARBONATE PLUS HEPTANE, DECANE, 2,2,4-TRIMETHYLPENTANE, CYCLOHEXANE, BENZENE, TOLUENE, OR TETRACHLOROMETHANE

Excess molar volumes V(E) at atmospheric pressure and at 298.15 K for dimethyl carbonate + heptane, decane, 2,2,4-trimethylpentane, cyclohexane, benzene, toluene, or tetrachloromethane have been calculated from densities measured with a vibrating-tube densimeter. The V(E) are positive for all the systems over the whole mole-fraction range. These results, together with previously published excess molar enthalpies H(E), suggest interactions between carbonate and hydrocarbons which are stronger with aromatic hydrocarbons than with aliphatic ones.