ABSTRACT

Experimental densities, viscosities, and heat capacities at different temperatures were measured over the entire mole fraction range for the binary mixture of ethylene glycol + water. Density values were used in the determination of excess molar volumes, VE. The excess volumes, VE, are fitted as a function of the mole fraction to a polynomial. centse was fitted to the Redlich-Kister equation. The excess volumes are negative over the entire composition at the lower temperatures. They show a U-shaped concentration dependence and decrease in absolute value with increasing temperature. At high temperatures, the excess molar volume shows an S-shaped dependence. centse values are negative over the entire range of mole fraction and have a very similar trend to that for VE. The heat capacities of mixtures have the maximum values at x1) 0.0312.

Compounds

#	Formula	Name
1	C2H6O2	1,2-ethanediol
2	H2O	water

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	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PYCNOM:UFactor:16	7
POMD	1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	CAPTUB:UFactor:3	7
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	9
POMD	1 2	Mass density, kg/m3 ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PYCNOM:UFactor:16	77
POMD	1 2	Viscosity, Pa*s ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	CAPTUB:UFactor:3	77
POMD	1 2	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	95

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

Excess Molar Volumes, Viscosities, and Heat Capacities for the Mixtures of Ethylene Glycol + Water from 273.15 K to 353.15 K

Yang, C.[Changsheng], Ma, P.[Peisheng], Jing, F.[Fengming], Tang, D.[Duoqiang]

ABSTRACT