ABSTRACT

Isothermal vapor-liquid equilibrium (VLE) for three binary systems was measured with a static total pressure method. The methoxymethane + methyl formate equilibrium was measured at 308 K, methoxymethane + hexane at 308 K and 335 K, and methyl formate + methanol at 359 K. The measured data were reduced to phase equilibrium data with the Barker's method. Legendre, Wilson, nonrandom two-liquid (NRTL), and universal quasichemical (UNIQUAC) parameters and modified universal functional (UNIFAC, Dortmund) pressure residuals were calculated. All binaries exhibited a positive deviation from the Raoult's law. A maximum pressure azeotrope was observed for the methyl formate + methanol system.

Compounds

#	Formula	Name
1	C2H6O	dimethyl ether
2	C2H4O2	methyl methanoate
3	C6H14	hexane
4	CH4O	methanol

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	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	3
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	2
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	2
POMD	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	4	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	1
POMD	2 1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Liquid Gas	Closed cell (Static) method	26
POMD	3 1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Liquid Gas	Closed cell (Static) method	52
POMD	4 2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Liquid Gas	Closed cell (Static) method	26

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

Vapor-Liquid Equilibrium for Methoxymethane + Methyl Formate, Methoxymethane + Hexane, and Methyl Formate + Methanol

Sundberg, A.[Aarne], Uusi-Kyyny, P.[Petri], Pakkanen, M.[Minna], Alopaeus, V.[Ville]

ABSTRACT