Université Nancy I, Faculté des Sciences, Chimie Théorique, E.R.A. 22, BP 239, 54506 Vandoeuvre-lès-Nancy, Cedex, France.
Static Dielectric Permittivity and Density of Liquid Dichloromethane to 200 MPa
Article first published online: 7 MAY 2010
Copyright © 1985 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Berichte der Bunsengesellschaft für physikalische Chemie
Volume 89, Issue 7, pages 800–804, Juli 1985
How to Cite
Diguet, R., Deul, R. and Franck, E. U. (1985), Static Dielectric Permittivity and Density of Liquid Dichloromethane to 200 MPa. Berichte der Bunsengesellschaft für physikalische Chemie, 89: 800–804. doi: 10.1002/bbpc.19850890715
- Issue published online: 7 MAY 2010
- Article first published online: 7 MAY 2010
- Manuscript Accepted: 19 JAN 1985
- Equations of State;
- High Pressure;
The static dielectric permittivity, ϵ, and density, ϱ, of dichloromethane was measured from 303 to 423 K and from 10 to 200 MPa. Both quantities were determined simultaneously with the same samples in one autoclave which served as dilatometer and capacitor. The high pressure cell and auxiliary equipment are described. The ϵ-values vary between 5.36 at 423 K and 20 MPa and 10.01 at 303 K and 200 MPa. The new ϵ-results agree with existing literature data at 303 K but are about 2% higher than those for 323 K. Isotherms of ϵ increase almost linearly with ϱ. The density data are fitted with a modified Hayward equation. The recent Vedam-Limsuwan-Chen-equation correlates ϵ and ϱ and permits to calculate ϵ or ϱ with an uncertainty lower than the experimental error. With the Onsager-Kirkwood-Fröhlich equation a correlation factor g close the unity (1.1 to 1.2) is obtained.