Dielectric behaviour of some pure normal alcohols and their binary mixtures

The pure 1-alkanols C-4 to C-12 and seven of their short/long chain binary equimolar mixtures are investigated by static and dynamic dielectric measur ements up to 36 GHz at 20, 30 and 40 degrees C. The apparent dipole moment and the relaxation parameters from a three Debye term analysis of the spect ra are discussed. The mixtures are found to behave like a one component alc ohol of mean chin length. An odd-even effect is revealed by comparison of m ixtures containing C-11 with those containing C-12 as long chain mixture co mponent.