ABSTRACT

Density, speed of sound, and refractive index for the binary mixture (1,4-dioxane (1) + isobutyric acid (2)) were measured over the whole composition range at temperatures T = (295.15, 298.15, 301.15, 304.15, 307.15, 310.15, and 313.15) K and at the atmospheric pressure. From the experimental data, excess molar volume VE, excess isentropic compressibility ?SE, excess speed of sound cE, excess refractive index nE, molar refraction R, and deviation in molar refraction ?R were calculated. These results have been fitted to the Redlich Kister polynomial equation. The excess molar volume, excess isentropic compressibility, and deviation in molar refraction were found to be negative, whereas excess speed of sound and excess refractive index were found to be positive for all temperatures. The thermodynamic properties have been discussed in terms of nature of molecular interactions between the components of the mixture.

Compounds

#	Formula	Name
1	C4H8O2	1,4-dioxane
2	C4H8O2	2-methylpropanoic acid

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	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Linear variable-path acoustic interferometer	7
POMD	1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	7
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:16	7
POMD	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Linear variable-path acoustic interferometer	7
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	7
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:16	7
POMD	2 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:16	77
POMD	2 1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Linear variable-path acoustic interferometer	77
POMD	2 1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	77

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

Density, Speed of Sound, and Refractive Index Measurements for the Binary Mixture (1, 4-Dioxane + Isobutyric Acid) at T = (295.15, 298.15, 301.15, 304.15, 307.15, 310.15, and 313.15) K

Kouissi, T.[Taoufik], Toumi, A.[Adel], Bouanz, M.[Moncef]

ABSTRACT