Temperature dependence of the excess molar volume of (dimethyl carbonate, or diethyl carbonate + toluene) fromT = 278.15 K to 323.15 K

Author： López E.R. Lugo L. Comuñas M.J.P. García J. Fernández J.

Publisher： Academic Press

ISSN： 0021-9614

Source： Journal of Chemical Thermodynamics, Vol.32, Iss.6, 2000-06, pp. : 743-754

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Abstract

The experimental densities ρ and excess molar volumesV_m^Eof (dimethyl carbonate + toluene) at the temperatures (278.15, 288.15, 298.15, 308.15, 318.15, and 323.15) K and of (diethyl carbonate + toluene) at the temperatures (288.15, 298.15, 308.15, 318.15, and 323.15) K were determined using an Anton-Paar DMA602HP densimeter. For (dimethyl carbonate + toluene) the excess molar volumes were positive over the whole composition range and at all temperatures. On the contrary, for (diethyl carbonate + toluene) the excess molar volumes were negative. The experimental data were used for the calculation by analytical differentiation of the following quantities: the cubic expansion coefficient, the excess cubic expansion of coefficient, (∂V_m^E / ∂T)_pand (∂H_m^E / ∂p)_T.