Dependence of permittivity of diluted octanol on temperature

The dielectric constant of octanol diluted in decane, cyclohexane and carbon tetrachloride for different concentrations has been measured as a function of temperature. The experimental data were adjusted with a modified Onsager's equation to which a term that diminishes the dipolar interaction was added. This empirical equation has already been employed and published earlier for pentanol solutions in the same solvents. Good agreement has been found between experimental and predicted permittivity values and the results obtained for the diverse solvents used are compared and analysed, together with the parameters resulting from the fittings. The differences in behaviour between octanol and pentanol are analysed.