ABSTRACT

Relative permittivities, Er , and refractive indixes, nD , have been measured at (288.15- 308.15) K and (293.15-303.15) K, respectively, for the mixtures 1-pentanol + octane, or + dibutyl ether and dibutyl ether + octane. These data have been used, together with density measurements available in the literature, to determine the correlation factor, gK , for the studied systems according to the Kirkwood-Frohlich equations. Results show that the existence of cyclic species of 1-pentanol are predominant at low concentrations of this alkanol when is mixed with octane. These species are broken in large extent by the more active molecules of oxaalkane in the dibutyl ether mixtures, which is in agreement with calorimetric data. The dibutyl ether + octane system does not show meaningful structure. These conclusions are confirmed by values of the molar polarization and by the temperature dependence of Er . The empirical expressions of Lorentz-Lorenz, Wiener, Heller, Gladstone-Dale and Newton correlate well the nD data.

Compounds

#	Formula	Name
1	C5H12O	pentan-1-ol
2	C8H18	octane
3	C8H18O	dibutyl ether

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	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	3
POMD	1	Relative permittivity at zero frequency ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Parallel plate capacitor	5
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	5
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	3
POMD	2	Relative permittivity at zero frequency ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Parallel plate capacitor	5
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	5
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	3
POMD	3	Relative permittivity at zero frequency ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Parallel plate capacitor	5
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	5
POMD	1 2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	27
POMD	1 2	Relative permittivity at zero frequency ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Parallel plate capacitor	45
POMD	1 3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	27
POMD	1 3	Relative permittivity at zero frequency ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Parallel plate capacitor	45
POMD	2 3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	27
POMD	2 3	Relative permittivity at zero frequency ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Parallel plate capacitor	45

Thermodynamics Research Center / ThermoML | Thermochimica Acta

DIELECTRIC AND REFRACTIVE INDEX MEASUREMENTS FOR THE SYSTEMS 1-PENTANOL + OCTANE, OR + DIBUTYL ETHER OR FOR DIBUTYL ETHER + OCTANE AT DIFFERENT TEMPERATURES

Alonso, V.[Victor], Gonzalez, J. A.[Juan Antonio], Fuente, I. G. d. l.[Isaias Garcia de la], Cobos, J. C.[Jose Carlos]

ABSTRACT