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TitleRelative permittivity measurements of gaseous, liquid, and supercritical dimethyl ether
Publication TypeJournal Article
Year of Publication2007
AuthorsEltringham, W., and Catchpole O.J.
JournalJournal of Chemical and Engineering Data
Pagination363 - 367
Date Published2007
ISSN00219568 (ISSN)
KeywordsDimethyl ether (DME), Dipole moment, Ethers, Kirkwood's theory, molecular dynamics, Molecular polarizability, Permittivity, Phase equilibria, Relative permittivity, Supercritical fluids
AbstractThe relative permittivity (εr) of dimethyl ether (DME) was measured as a function of temperature and pressure in the gaseous, liquid, and supercritical states. The temperature and pressure ranges studied were (303 to 403) K and (0.04 to 33.2) MPa, respectively. The relative permittivity was fitted to the reduced density (ρr) using the function (εr - 1)/(2εr + 1), and the apparent dipole moment (μ*) of the liquid phase was calculated using Kirkwood's theory of molecular polarizability. © 2007 American Chemical Society.

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