Hunger, J. and Buchner, Richard and Kandil, M.E. and May, E.F. and Marsh, K.N. and Hefter, Glenn (2010) Relative Permittivity of Dimethylsulfoxide and N,N-Dimethylformamide at Temperatures from (278 to 328) K and Pressures from (0.1 to 5) MPa. Journal of Chemical & Engineering Data 55 (5), pp. 2055-2065.
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Relative permittivities (εr) were measured at two frequencies with an expanded (k = 2) uncertainty of 0.1 using a re-entrant radio frequency resonator in the pressure range (0.1 to 5) MPa at temps. from (278 to 328) K for N,N-dimethylformamide (DMF) and (293 to 328) K for dimethylsulfoxide (DMSO). At 298.15 K and 0.1 MPa, the assessed literature avs. of 38.4 ± 1.8 and 47.3 ± 1.8 for DMF and DMSO, resp., are consistent with the values of 37.2 ± 0.1 and 46.0 ± 0.1 detd. in this work. Possible sources of uncertainty are discussed. An empirical description of εr(p,T) is given that can be used to calc. the temp. and pressure derivs. of εr. Kirkwood g factors calcd. using the present data show only minimal dipole-dipole correlations for both DMF and DMSO.
|Institutions:||Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > PD Dr. Richard Buchner|
|Keywords:||relative permittivity DMSO DMF pressure rf resonator|
|Subjects:||500 Science > 540 Chemistry & allied sciences|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||08 Jun 2012 12:46|
|Last Modified:||08 Jun 2012 12:46|
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