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Densities and Volumetric Properties of Ethylene Glycol + Dimethylsulfoxide Mixtures at Temperatures of (278.15 to 323.15) K and Pressures of (0.1 to 100) MPa

Authors :
Dmitriy M. Makarov
Arkadiy M. Kolker
Gennadiy I. Egorov
Source :
Journal of Chemical & Engineering Data. 55:3481-3488
Publication Year :
2010
Publisher :
American Chemical Society (ACS), 2010.

Abstract

Densities, ρ, and compressibility coefficients, k = (vo − v)/vo, of ethylene glycol (1) + dimethylsulfoxide (2) mixtures were measured over the whole concentration range at pressures of (0.1 to 100) MPa and temperatures of (278.15 to 323.15) K. Excess molar volumes, isothermal compressibility, and thermal isobaric expansivity coefficients as well as thermal pressure coefficients were calculated. It was revealed that concentration dependences of specific volumes, v, at some state parameters passed a minimum. The shift of minimum position to molar fraction x2 = 0.5 was observed with increasing pressure and decreasing temperature. The negative excess molar volumes, VmE, indicated a compression of EG (1) + DMSO (2) systems when mixing. Composition dependences of isothermal compressibility, κT, and thermal isobaric expansivity coefficients, α, as well as thermal pressure coefficients, β, were near-linear. Both increasing and decreasing of κT and β values were observed with x2 increase depending on temperature ...

Details

ISSN :
15205134 and 00219568
Volume :
55
Database :
OpenAIRE
Journal :
Journal of Chemical & Engineering Data
Accession number :
edsair.doi...........feb6047d10a8330b458926cb4e104cd6
Full Text :
https://doi.org/10.1021/je100089s