ABSTRACT

The (liquid + liquid) coexistences and the critical behavior of isobaric heat capacity per unit volume for critical binary solutions {dimethyl carbonate + n-undecane, or n-tridecane} have been studied. The critical exponents b and a were deduced and found to be consistent with the 3D-Ising values. The critical amplitudes were determined and used to test the asymmetric criticality of coexistence curves. It was found that the heat capacity does play an important role in describing the asymmetric criticality of the coexistence curves.

Compounds

#	Formula	Name
1	C3H6O3	dimethyl carbonate
2	C11H24	undecane
3	C13H28	tridecane

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 (other wavelength) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Angle minimization by sell rotation	9
POMD	2	Refractive index (other wavelength) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Angle minimization by sell rotation	9
POMD	3	Refractive index (other wavelength) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Angle minimization by sell rotation	9
POMD	1 2	Upper consolute temperature, K ; Liquid mixture 1	Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	VISOBS	1
POMD	1 2	Refractive index (other wavelength) ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Angle minimization by sell rotation	64
POMD	1 2	Refractive index (other wavelength) ; Liquid	Mole fraction - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Angle minimization by sell rotation	9
POMD	1 2	Mole fraction - 2 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Index of refraction calibration data	32
POMD	1 2	Mole fraction - 2 ; Liquid mixture 2	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Index of refraction calibration data	32
POMD	1 2	Heat capacity at constant pressure per volume, J/K/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 2; Liquid	Liquid	DSC Calorimetry	45
POMD	1 2	Upper consolute composition: mole fraction - 2 ; Liquid mixture 1	Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Visual method	1
POMD	1 3	Upper consolute temperature, K ; Liquid mixture 1	Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	VISOBS	1
POMD	1 3	Refractive index (other wavelength) ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Angle minimization by sell rotation	52
POMD	1 3	Refractive index (other wavelength) ; Liquid	Mole fraction - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Angle minimization by sell rotation	9
POMD	1 3	Heat capacity at constant pressure per volume, J/K/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 3; Liquid	Liquid	DSC Calorimetry	45
POMD	1 3	Upper consolute composition: mole fraction - 3 ; Liquid mixture 1	Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Visual method	1
POMD	1 3	Mole fraction - 3 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Index of refraction calibration data	26
POMD	1 3	Mole fraction - 3 ; Liquid mixture 2	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Index of refraction calibration data	26

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Heat capacities and asymmetric criticality of the (liquid + liquid) coexistence curves for {dimethyl carbonate + n-undecane, or n-tridecane}

Chen, Z.[Zhiyun], Shi, A.[Aiqin], Liu, S.[Shixia], Yin, T.[Tianxiang], Shen, W.[Weiguo]

ABSTRACT