ABSTRACT

Liquid-liquid equilibrium (LLE) data (water + 1, 2-butanediol + 2-ethyl-1-hexanol) and (water + 1, 2-propanediol + 2-ethyl-1-hexanol) were determined at T=298.2 K and atmospheric pressure. Phase diagrams were obtained for these ternary systems. Distribution coefficients and separation factors were measured to evaluate the extracting capability of the solvents. The UNIQUAC model was used to correlate the observed LLE data with a root mean square deviation value of 1.75 and 0.74 for 1, 2-butanediol and 1, 2-propanediol mixtures, respectively. The reliability of the experimental data was confirmed by using the Othmer-Tobias correlation.

Compounds

#	Formula	Name
1	C8H18O	2-ethyl-1-hexanol
2	C4H10O2	1,2-butanediol
3	H2O	water
4	C3H8O2	1,2-propanediol

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 2 3	Mass fraction - 3 ; Liquid mixture 1 Mass fraction - 3 ; Liquid mixture 2 Mass fraction - 2 ; Liquid mixture 2	Mass fraction - 2; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	5
POMD	4 1 3	Mass fraction - 3 ; Liquid mixture 2 Mass fraction - 4 ; Liquid mixture 1 Mass fraction - 3 ; Liquid mixture 1	Mass fraction - 4; Liquid mixture 2	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	5

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Phase diagrams for (water + 1, 2-butanediol or 1, 2-propanediol + 2-ethyl-1-hexanol) systems: Experimental data and UNIQUAC

Bahrpaima, K.[Kh.], Frydooni, S., Behzadi, M.

ABSTRACT