DIELECTRIC EVIDENCE FOR ACETONE HYDRATE
- 1 February 1963
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 41 (2) , 264-273
- https://doi.org/10.1139/v63-041
Abstract
The phase diagram of the acetone–water system shows that acetone hydrate decomposes at an incongruent melting point. The existence of acetone hydrate is confirmed by a study of the low-frequency dielectric properties of this system. A dispersion region, related to the relaxation of water molecules in the clathrate structure, is characterized by a "static" dielectric constant and an activation energy about half as large as the corresponding values for ice, and by a limiting high-frequency dielectric constant of about 7 at 200° K. The magnitude of the latter is attributed to orientation of acetone molecules within the larger cavities of the hydrate structure.Keywords
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