ABSTRACT

The experimental measurements for liquid densities of n-decane and p-xylene binary mixtures were performed over the entire composition with a high-pressure vibrating-tube densimeter. The temperature ranges for the present measurement were from 293.15 K to 363.15 K and the pressures were reached to 60 MPa. The experimental uncertainty is estimated to be 0.001 with 0.95 confidence level. Experimental density values were fitted by the modified Tammann-Tait equation. The PC-SAFT equation of state and Cibulka's equation was used to predict the densities of n-decane and p-xylene and its mixtures. In addition, derived volumetric properties, such as the excess molar volumes, the isothermal compressibility, and isobaric thermal expansivity, were calculated from the experimental density data. The effects of pressure and temperature on the derived properties were also discussed.

Compounds

#	Formula	Name
1	C10H22	decane
2	C8H10	1,4-dimethylbenzene

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	Vibrating tube method	104
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	99
POMD	1 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Mole fraction - 1; Liquid		Liquid	Vibrating tube method	1013
POMD	1 2	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Mole fraction - 1; Liquid	Temperature, K; Liquid	Liquid	Vibrating tube method	117

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Liquid densities for n-decane + p-xylene mixtures from 293.15 K to 363.15 K at pressures up to 60 MPa

Kang, Kai, Wang, Xiaopo

ABSTRACT