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Density and refractive index measurements of 1-ethyl-3-methylimidazolium-based ionic liquids

✍ Scribed by Allan N. Soriano; Bonifacio T. Doma Jr.; Meng-Hui Li

Publisher
Elsevier
Year
2010
Tongue
English
Weight
335 KB
Volume
41
Category
Article
ISSN
1876-1070

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✦ Synopsis

This work was the continuation of our previous study where the correlations between density and refractive index of pure systems of ionic liquids were examined. The density and refractive index of five 1-ethyl-3-methylimidazolium-based ionic liquids were measured at standard pressure and temperature up to 353.2 K. Densities and refractive indices of the studied ionic liquids were presented as a function of temperature. A group contribution-based equation was used to represent the temperature dependence of density and refractive index. The Lorentz-Lorenz, Dale-Gladstone, Eykman, Oster, Arago-Biot, and Newton equations, as well as a modified Eykman were used to correlate the relation between the measured densities and refractive indices. The correlations give satisfactory results.

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