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Journal of Chemistry
Volume 2013, Article ID 687106, 4 pages
Research Article

Dielectric and Excess Dielectric Constants of Acetonitrile + Butyl Amine, + Ethylamine, and + Methylamine at 303, 313, and 323 K

1Department of Physics, School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, Durban 4000, South Africa
2Department of Chemistry, Kongju National University, 182 Singwandong, Gongju, Chungnam 314-701, Republic of Korea
3Department of Instrumentation, Sri Krishnadevaraya University, Andhra Pradesh, Anantapur 515055, India

Received 22 June 2012; Revised 12 July 2012; Accepted 12 July 2012

Academic Editor: Pedro M. Mancini

Copyright © 2013 Ch. V. V. Ramana et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The dielectric constants and excess dielectric constants of the binary systems: acetonitrile + butyl amine, + ethylamine and + methylamine have been studied at 303, 313, and 323 K temperatures and over the complete mole fraction range. The dielectric constants for these mixtures were measured using a microcontroller based system. The results are positive over the entire range of composition. Symmetrical curves were observed for the systems in which the maximum occurs approximately at 0.7-mole fraction of acetonitrile. The results are discussed in terms of intermolecular interactions. The investigation of dielectric constant of mixed solvents bearing amines aims at better comprehension of their biological, chemical, pharmaceutical, technological, and laboratory applications.