Dielectric Properties of Some Glycols

The Debye theory of polar molecules leads to the conclusion that the anomalous dispersion due to dipoles which has been observed at high frequencies should also be found at low frequencies. Supercooled glycols are viscous enough at low temperatures to show dispersion at low frequencies. Real and imaginary dielectric constant and power factor are calculated and their inter-relationships are discussed. Better than qualitative agreement with the Debye theory is observed in the pure pentandiol, but not in the solution measurement.