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Density and volumetric properties of ethane-1,2-diol+di-ethylen-glycol mixtures at different temperatures

Cocchi, Marina and Marchetti, Andrea and Pigani, Laura and Sanna, Gavino and Tassi, Lorenzo and Ulrici, Alessandro and Vaccari, Giulia and Zanardi, Chiara (2000) Density and volumetric properties of ethane-1,2-diol+di-ethylen-glycol mixtures at different temperatures. Fluid Phase Equilibria, Vol. 172 (1), p. 93-104. ISSN 0378-3812. Article.

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DOI: 10.1016/S0378-3812(00)00365-4

Abstract

The density of the ethane-1,2-diol (ED)+di-ethylen-glycol (DEG) binary mixtures has been measured at different temperatures over the complete composition range. The experimental measurements have been used to check the validity of relationships accounting for the dependence of the density on temperature and composition, useful to obtain interpolated values in the correspondence of the experimental data gaps.
Starting from the primary data, some derived quantities, such as partial molar volumes, excess and partial excess molar volumes, have been obtained. In these mixtures, VE presents an S-shaped dependence on composition at each temperature, showing negative values in the ED rich-region and positive values at the opposite extreme. The results are compared and discussed to get light to the changes in molecular association and structural effects in this solvent system.

Item Type:Article
ID Code:3676
Status:Published
Refereed:Yes
Uncontrolled Keywords:Density, binary mixtures, excess molar volumes, ethane-1,2-diol, di-ethylen-glycol
Subjects:Area 03 - Scienze chimiche > CHIM/01 Chimica analitica
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
Publisher:Elsevier
ISSN:0378-3812
Publisher Policy:© 2000 Elsevier Science
Deposited On:02 Apr 2010 10:18

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