Volumetric and thermodynamic properties of liquid mixtures of 2-n-butoxyethanol with water

p-V-T data for six compositions of 2-n-butoxyethanol (BE) and water have been obtained in the form of volume ratios at several temperatures in the range 278.15 to 353.13 K at pressures from atmospheric to 347 MPa or higher. One of the compositions is in the region where two phases exist at certain t...

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Bibliographic Details
Published in:International journal of thermophysics 1998, Vol.19 (1), p.191-214
Main Authors: BACK, P. J, MALHOTRA, R, WOOLF, L. A
Format: Article
Language:English
Subjects:
Compressibility of liquids
Condensed matter: structure, mechanical and thermal properties
Density of liquids
Ethanol
Exact sciences and technology
Heat capacities of solids
Mathematical models
Phase composition
Phase separation
Physics
Pressure effects
Specific heat of liquids
Thermal effects
Thermal properties of condensed matter
Thermal properties of crystalline solids
Thermodynamic properties
Water
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Summary:p-V-T data for six compositions of 2-n-butoxyethanol (BE) and water have been obtained in the form of volume ratios at several temperatures in the range 278.15 to 353.13 K at pressures from atmospheric to 347 MPa or higher. One of the compositions is in the region where two phases exist at certain temperatures, while two compositions are near the boundary of that region. Densities at atmospheric pressure in a temperature range similar to that for the p-V-T data are also reported. Isothermal compressibilities, isobaric expansivities, and changes in the isobaric heat capacity have been calculated from the volumetric data for pressures up to 300 MPa. The values of normalized volume fluctuations obtained from the data at 0.1 MPa approach those of water for conditions which are close to those for phase separation in this system. Such behavior is not observed at 100 MPa, where such separation is suppressed.
ISSN:0195-928X
1572-9567
DOI:10.1023/A:1021407320566