ABSTRACT

In this work, iquid-liquid equilibrium (LLE) data for ternary system, (water + propionic acid + 2- methoxy-2-methylpropane) and (water + butyric acid + 2-methoxy-2-methylpropane), were experimentally measured at atmospheric pressure and temperatures of 298.2 K and 323.2 K. The reliability of the experimental tie-line data was verified by the Othmer-Tobias and Hand equations. Distribution coefficients and separation factor values were evaluated for the immiscibility region. The consistency of experimental tie-line data was confirmed by the NRTL and UNIQUAC models. Both models describe the phase behavior of the studied systems accurately with very small average deviations.

Compounds

#	Formula	Name
1	C5H12O	2-methoxy-2-methylpropane
2	C3H6O2	propanoic acid
3	C4H8O2	butanoic acid
4	C4H8O2	2-methylpropanoic acid
5	CH4O	methanol
6	C4H10O	butan-1-ol
7	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	Vibrating tube method	1
POMD	1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	ABBE:UFactor:4	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	ABBE:UFactor:4	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	ABBE:UFactor:4	1
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	ABBE:UFactor:4	1
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	5	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	ABBE:UFactor:4	1
POMD	6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	ABBE:UFactor:4	1
POMD	7	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	7	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	ABBE:UFactor:4	1
POMD	2 1 7	Mole fraction - 2 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Liquid - 2	Titration method	32
POMD	2 1 7	Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 1 ; Liquid mixture 1 Mole fraction - 2 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Mole fraction - 2; Liquid mixture 2	Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	16
POMD	3 1 7	Mole fraction - 3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Liquid - 3	Titration method	32
POMD	3 1 7	Mole fraction - 3 ; Liquid mixture 2 Mole fraction - 1 ; Liquid mixture 1 Mole fraction - 3 ; Liquid mixture 1	Temperature, K; Liquid mixture 2 Mole fraction - 1; Liquid mixture 2	Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	16

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Phase equilibria of (water + propionic acid or butyric acid + 2-methoxy- 2-methylpropane) ternary systems at 298.2 K and 323.2 K

Luo, L.[Liejin], Liu, D.[Dong], Li, L.[Libo], Chen, Y.[Yun]

ABSTRACT