( p, Vm, T, x) measurements of dimethyl carbonate+octane binary mixtures : I. Experimental results, isothermal compressibilities, isobaric expansivities and internal pressures

Experimental densities for the compressed liquid phase are reported for dimethyl carbonate and octane, and nine of their mixtures over the composition range (0.1≤ x≤0.9), the temperature range 278.15–353.15 K and for pressures up to 25 MPa. Density values (725 experimental data) of this system have...

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Published in:Fluid phase equilibria 2001-08, Vol.186 (1), p.235-255
Main Authors: Lugo, L., Comuñas, M.J.P., López, E.R., Fernández, J.
Format: Article
Language:English
Subjects:
Alkane
Chemical thermodynamics
Chemistry
Density
Dimethyl carbonate
Exact sciences and technology
General and physical chemistry
Internal pressure
Mixture
Mixtures
pVTx
Thermodynamic properties
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Comuñas, M.J.P.
López, E.R.
Fernández, J.
description Experimental densities for the compressed liquid phase are reported for dimethyl carbonate and octane, and nine of their mixtures over the composition range (0.1≤ x≤0.9), the temperature range 278.15–353.15 K and for pressures up to 25 MPa. Density values (725 experimental data) of this system have been measured with a high-pressure vibrating tube densimeter, with an uncertainty of 3×10 −5 g cm −3. Moreover, we present a new calibration of this apparatus for this range of pressure and temperature by using the method of Lagourette et al. Data reliability has been verified by comparing our experimental results for octane, dichloromethane and dimethyl carbonate with literature data. For each composition, the experimental values were correlated using a Tait-type equation. Furthermore, the isothermal compressibilities, isobaric thermal expansion coefficients and internal pressures have been calculated using the Tait correlations.
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subjects Alkane
Chemical thermodynamics
Chemistry
Density
Dimethyl carbonate
Exact sciences and technology
General and physical chemistry
Internal pressure
Mixture
Mixtures
pVTx
Thermodynamic properties
title ( p, Vm, T, x) measurements of dimethyl carbonate+octane binary mixtures : I. Experimental results, isothermal compressibilities, isobaric expansivities and internal pressures
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