Nitrogen permittivity

Aprotic protophillic solvents all nitrogen bases without protons, e.g., pyridine, and other conjugated amines, and fully alkylated amines or amides. The solvents function as Bronsted bases as well as Lewis bases and may have high permittivity. 

The electric permittivities (e) were calculated from capacitance measurements carried out at 1 kHz in the temperature range 80-333 K, in the dark and under ambient nitrogen pressure. The samples were polymerized in situ at 333 K, the polymer amount being determined directly from the time-conversion dependences [13, 14]. 

As an example in Figure 6.6 we present data of the static (v = 0) dielectric permittivity of molecular sieve MSKE 154 including nitrogen (N2 (5.0)) as an adsorbate taken at T = 294.7 K for gas pressures up to 10 MPa, [6.18]. These data can easily be correlated by a dielectric (adsorption) isotherm of Langmuirian type... 

---