ABSTRACT

Isobaric vapor-liquid equilibrium measurements for the binary systems 1-propyl alcohol + dipropyl ether and 1-butyl alcohol + dibutyl ether are reported at 20 and 101.3 kPa. Both systems, which deviate positively from ideal behavior present a minimum boiling point azeotrope at both pressures, showing the azeotropic compositions a strong dependency on pressure. The activity coefficients and boiling points of the solutions were correlated with its composition by the Wilson, UNIQUAC, NRTL, and Wisniak-Tamir equations.

Compounds

#	Formula	Name
1	C3H8O	propan-1-ol
2	C4H10O	butan-1-ol
3	C6H14O	dipropyl ether
4	C8H18O	dibutyl ether

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	Phase	Method	#Points
POMD	1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	1
POMD	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	2
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:2	1
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	2
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	1
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	28
POMD	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	1
POMD	4	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	26
POMD	1 3	Azeotropic temperature, K ; Liquid	Pressure, kPa; Liquid	Liquid Gas	By T(X) extreme	2
POMD	1 3	Azeotropic composition: mole fraction - 1 ; Liquid	Pressure, kPa; Liquid	Liquid Gas	By T or P extreme	2
POMD	1 3	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	42
POMD	1 3	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Pressure, kPa; Liquid	Gas Liquid	Chromatography	42
POMD	2 4	Azeotropic temperature, K ; Liquid	Pressure, kPa; Liquid	Liquid Gas	By T(X) extreme	2
POMD	2 4	Azeotropic composition: mole fraction - 2 ; Liquid	Pressure, kPa; Liquid	Liquid Gas	By T or P extreme	2
POMD	2 4	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 2; Liquid Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	42
POMD	2 4	Mole fraction - 2 ; Gas	Mole fraction - 2; Liquid Pressure, kPa; Liquid	Gas Liquid	Chromatography	42

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Isobaric vapor-liquid equilibria for the binary systems 1-propyl alcohol + dipropyl ether and 1-butyl alcohol + dibutyl ether at 20 and 101.3 kPa

Lladosa, E., Monton, J. B., Burguet, M. C., Munoz, R.

ABSTRACT