ABSTRACT

Impedance spectroscopy (IS) was used for the determination of the static dielectric permittivity and the electric conductivity of N-methylacetamide (NMA) + N,N-dimethylacetamide (DMA) mixtures over the whole concentration range and over the temperature range of 303.15 K to 393.15 K. The static permittivity values obtained with IS for both neat compounds at different temperatures are in a very good agreement with those measured with the classical dielectric methods. In NMA + DMA mixtures, the permittivity deviations (Aa) from the concentration additive rule are strongly negative, and the Aa dependence on the mole fraction of NMA was fitted to the Redlich-Kister equation.

Compounds

#	Formula	Name
1	C3H7NO	N-methylacetamide
2	C4H9NO	N,N-dimethylethanamide

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	10
POMD	1	Relative permittivity at zero frequency ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Parallel plate capacitor	10
POMD	2	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	10
POMD	2	Relative permittivity at zero frequency ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Parallel plate capacitor	10
POMD	1 2	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	110
POMD	1 2	Relative permittivity at zero frequency ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Parallel plate capacitor	110

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Static Dielectric Permittivity and Electric Conductivity of N-Methylacetamide + N,N-Dimethylacetamide Mixtures

Swiergiel, J.[Jolanta], Jadzyn, J.[Jan]

ABSTRACT