Dielectric Absorption and Phase Changes in an Aliphatic Ester in the Waxy Form

The dielectric absorption has been examined in an aliphatic ester, butyl stearate, when in the waxy, transcent form. The measurements reveal the existence of three phases with well-defined transition temperatures; thermal studies and x-ray powder photographs confirm the existence of the three phases. There are three absorption regions in each phase, one possessing a very high activation energy. The possible mechanisms of the absorptions are discussed briefly.