The electric conductivity of benzimidazolium azelate (abbreviated as BenAze) has been studied in a wide temperature range and different isobaric conditions, by means of impedance spectroscopy method. At ambient pressure, the conductivity sigma(dc) of the compound studied is well described by the Arrhenius law, suggesting that electric conduction of BenAze is related to a thermally activated process. High pressure leads to a drastic decrease in sigma(dc) values and a deviation of the sigma(dc) temperature dependence from the Arrhenius law. (C) 2012 Elsevier B.V. All rights reserved.