Journal article
The eutectic point in choline chloride and ethylene glycol mixtures
- Abstract:
- The choline chloride (ChCl) and ethylene glycol (EG) mixture has become established as a paradigmatic deep eutectic solvent (DES). Here, we present measurements of the phase behaviour of this mixture over a wide composition range, and provide an extended phase diagram. The eutectic point was found to lie at −28 ± 1 °C and 0.01 < xChCl < 0.02, sharply contrasting with the previously expected eutectic composition. Our observations confirm that the eutectic temperature is not ‘deep’ compared to the ideal solution theory prediction. We also observe a cold-crystallisation at T = −65 °C which may have been formerly misinterpreted as the eutectic point.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 804.5KB, Terms of use)
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(Preview, Version of record, pdf, 165.6KB, Terms of use)
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- Publisher copy:
- 10.1039/d2cc04008e
Authors
- Publisher:
- Royal Society of Chemistry
- Journal:
- Chemical Communications More from this journal
- Volume:
- 58
- Issue:
- 91
- Pages:
- 12728-12731
- Place of publication:
- England
- Publication date:
- 2022-10-26
- Acceptance date:
- 2022-10-24
- DOI:
- EISSN:
-
1364-548X
- ISSN:
-
1359-7345
- Pmid:
-
36314432
- Language:
-
English
- Keywords:
- Pubs id:
-
1300687
- Local pid:
-
pubs:1300687
- Deposit date:
-
2024-02-29
Terms of use
- Copyright holder:
- Hayler and Perkin
- Copyright date:
- 2022
- Rights statement:
- © 2022 The Authors. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
- Notes:
- A correction to this article is available online at: https://doi.org/10.1039/D4CC90022G
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