ABSTRACT

(Liquid-liquid) equilibrium (LLE) data of the solubility curves and tie-line compositions have been determined for mixtures of (water + acetic acid + organic solvent (o-xylene, m-xylene or p-xylene)) at T = 298.15 K and atmospheric pressure. The mixed isomers (xylenes) are also used as a mixed-solvent like the individual isomers and phase behaviour of (water + acetic acid + xylenes) is investigated. The experimental LLE data were correlated using the NRTL model, and the binary interaction parameters were obtained. Distribution coefficients and separation factors have been evaluated for the immiscibility region. The reliability of the experimental tie-lines has been confirmed by using Othmer Tobias correlation.

Compounds

#	Formula	Name
1	C2H4O2	acetic acid
2	C8H10	1,3-dimethylbenzene
3	C8H10	1,2-dimethylbenzene
4	C8H10	1,4-dimethylbenzene
5	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 3 5	Mass fraction - 1 ; Liquid mixture 1	Mass fraction - 5; Liquid mixture 1	Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	15
POMD	1 3 5	Mass fraction - 5 ; Liquid mixture 2 Mass fraction - 5 ; Liquid mixture 1 Mass fraction - 1 ; Liquid mixture 1	Mass fraction - 1; Liquid mixture 2	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Titration method Titration method Titration method	7
POMD	1 2 5	Mass fraction - 1 ; Liquid mixture 1	Mass fraction - 5; Liquid mixture 1	Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	15
POMD	1 2 5	Mass fraction - 5 ; Liquid mixture 2 Mass fraction - 5 ; Liquid mixture 1 Mass fraction - 1 ; Liquid mixture 1	Mass fraction - 1; Liquid mixture 2	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Titration method Titration method Titration method	7
POMD	1 4 5	Mass fraction - 1 ; Liquid mixture 1	Mass fraction - 5; Liquid mixture 1	Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	15
POMD	1 4 5	Mass fraction - 5 ; Liquid mixture 1 Mass fraction - 5 ; Liquid mixture 2 Mass fraction - 1 ; Liquid mixture 2	Mass fraction - 1; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Titration method Titration method Titration method	7
POMD	3 5	Mass fraction - 5 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1
POMD	3 5	Mass fraction - 5 ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2		Liquid mixture 2 Liquid mixture 1	Titration method	1
POMD	2 5	Mass fraction - 5 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1
POMD	2 5	Mass fraction - 5 ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2		Liquid mixture 2 Liquid mixture 1	Titration method	1
POMD	4 5	Mass fraction - 5 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1
POMD	4 5	Mass fraction - 5 ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2		Liquid mixture 2 Liquid mixture 1	Titration method	1

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Phase behaviour of aqueous mixtures of acetic acid with isomers of xylene

Bahrpaima, K.[Kh.], Sajadi, H., Shafiee, A.

ABSTRACT