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Macroscopic and microscopic study of 1-Ethyl-3-methyl-imidazolium acetate-water mixtures

Hall, Craig A.; Le, Kim A.; Rudaz, Cyrielle; Radhi, Asanah; Lovell, Christopher S.; Damion, Robin A.; Budtova, Tatiana; Ries, Michael E.


Craig A. Hall

Kim A. Le

Cyrielle Rudaz

Asanah Radhi

Christopher S. Lovell

Tatiana Budtova

Michael E. Ries


Mixtures of 1-ethyl-3-methyl-imidazolium acetate ([C2mim][OAc]) and water across the entire composition range, from pure [C2mim][OAc] to pure water, have been investigated using density, viscosity, and NMR spectroscopy, relaxometry, and diffusion measurements. These results have been compared to ideal mixing laws for the microscopic data obtained from the NMR results and macroscopic data through the viscosity and density. It was also found that the mixing of the two fluids is exothermal. The proton spectra indicate though that [C2mim][OAc] and water are interacting without the formation of new compounds. The maximal deviations of experimental data from theoretical mixing rules were all found to occur within the range 0.74 ± 0.06 mol fraction of water, corresponding to approximately three water molecules per [C2mim][OAc] molecule. © 2012 American Chemical Society.


Hall, C. A., Le, K. A., Rudaz, C., Radhi, A., Lovell, C. S., Damion, R. A., …Ries, M. E. (2012). Macroscopic and microscopic study of 1-Ethyl-3-methyl-imidazolium acetate-water mixtures. Journal of Physical Chemistry B, 116(42), 12810-12818.

Journal Article Type Article
Acceptance Date Sep 22, 2012
Online Publication Date Oct 10, 2012
Publication Date Oct 25, 2012
Deposit Date Dec 5, 2022
Journal Journal of Physical Chemistry B
Print ISSN 1520-6106
Electronic ISSN 1520-5207
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 116
Issue 42
Pages 12810-12818
Public URL
Publisher URL