ABSTRACT

Isobaric vapor-liquid equilibria of binary systems formed by formic acid + N,N-dimethylformamide or + 2-ethyl-1-hexanol as well as N,N-dimethylformamide + 1-chloro-2-ethylhexane were estimated at a pressure of 10.00 kPa. Mutual solubilities of formic acid + 1-chloro-2-ethylhexane were determined within the temperature range of (20 to 80) deg C. The binary equilibrium data were fitted to the Redlich-Kister, Wilson, and NRTL equations employing the maximum likelihood procedure. Binary parameters of the chosen excess molar Gibbs energy models were calculated assuming ideal behavior of the vapor phase. A comparison of the goodness of fit of the selected GE models is presented.

Compounds

#	Formula	Name
1	CH2O2	formic acid
2	C8H18O	2-ethyl-1-hexanol
3	C8H17Cl	1-chloro-2-ethylhexane
4	C3H7NO	dimethylformamide

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 (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	1 4	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	CCELL:UFactor:64	9
POMD	1 2	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	CCELL:UFactor:64	10
POMD	4 3	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 4; Gas	Pressure, kPa; Liquid	Liquid Gas	CCELL:UFactor:64	7
POMD	4 3	Mole fraction - 4 ; Liquid	Mole fraction - 4; Gas	Pressure, kPa; Liquid	Liquid Gas	CHROM:UFactor:16	7
POMD	1 3	Mole fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	CHROM:UFactor:32	5
POMD	1 3	Mole fraction - 1 ; Liquid mixture 2	Temperature, K; Liquid mixture 2	Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	CHROM:UFactor:32	6

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Phase Equilibria of Binary Systems Comprising Formic Acid, N,N-Dimethylformamide, 1-Chloro-2-ethylhexane, and 2-Ethyl-1-hexanol

Graczova, E.[Elena], Steltenpohl, P.[Pavol]

ABSTRACT