ABSTRACT

Isothermal vapor-liquid equilibrium (VLE) of three binary mixtures was measured with a static total pressure apparatus: dimethylsulfide + ethanol at 350.4 K, +dimethylether at 336.7 K, +methylacetate at 350.3 K. The Barker method was used to convert the total pressure and total composition measurements into vapor-liquid equilibrium data. Legendre polynomial and Wilson model were used as the liquid activity coefficient model to obtain the compositions of the vapor and liquid phases. All systems exhibited positive deviation from Raoult's law. The dimethylsulfide + ethanol system showed azeotropic behavior (x_1az = 0.058, T_az = 350.4 K, P_az = 341.9 kPa).

Compounds

#	Formula	Name
1	C2H6S	2-thiapropane
2	C2H6O	ethanol
3	C2H6O	dimethyl ether
4	C3H6O2	methyl ethanoate

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	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	4
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	1
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	1
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	Mole fraction - 2; Liquid Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	26
POMD	2 1	Mole fraction - 2 ; Gas	Mole fraction - 2; Liquid Temperature, K; Liquid	Gas Liquid	Phase equilibration	26
POMD	1 4	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 4; Liquid Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	26
POMD	1 4	Mole fraction - 4 ; Gas	Mole fraction - 4; Liquid Temperature, K; Liquid	Gas Liquid	Phase equilibration	26
POMD	1 3	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 3; Liquid Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	26
POMD	1 3	Mole fraction - 3 ; Gas	Mole fraction - 3; Liquid Temperature, K; Liquid	Gas Liquid	Phase equilibration	26

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Vapor-liquid equilibrium measurements of dimethylsulfide, +ethanol, +dimethylether, +methylacetate with a static total pressure method

Sapei, E.[Erlin], Uusi-Kyyny, P.[Petri], Pokkia, J.-P.[Juha-Pekka], Pakkanen, M.[Minna], Keskinen, K. I.[Kari I.], Alopaeus, V.[Ville]

ABSTRACT