ABSTRACT

Isothermal vapor-liquid equilibrium (VLE) for diethyl sulfide + n-heptane and diethyl sulfide + 2,2,4- trimethylpentane at (363.15 and 353.15) K were measured with a circulation still. Maximum pressure azeotropes were found in both systems. The experimental results were correlated with the temperature-dependent Wilson model and also compared with the original UNIFAC and COSMO-RS predictive models. The measured diethyl sulfide + n-heptane VLE have been used simultaneously with the excess enthalpy from literature for a correlation of temperature-dependent Wilson parameters. Analyses of liquid- and vapor-phase composition were determined with a gas chromatograph and a refractometer. All VLE measurements passed the three thermodynamic consistency tests used.

Compounds

#	Formula	Name
1	C4H10S	3-thiapentane
2	C7H16	heptane
3	C8H18	2,2,4-trimethylpentane
4	C7H8	toluene

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	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	5
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	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	11
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	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	11
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	2 1	Refractive index (Na D-line) ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Standard Abbe refractometry	17
POMD	2 1	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	41
POMD	2 1	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	41
POMD	2 1	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Temperature, K; Liquid		Gas Liquid	Index of refraction calibration data	41
POMD	2 1	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Temperature, K; Liquid		Gas Liquid	Index of refraction calibration data	41
POMD	1 3	Refractive index (Na D-line) ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Standard Abbe refractometry	17
POMD	1 3	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	34
POMD	1 3	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	34
POMD	1 3	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Temperature, K; Liquid		Gas Liquid	Chromatography	34
POMD	1 3	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Temperature, K; Liquid		Gas Liquid	Chromatography	34

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

Vapor-Liquid Equilibrium for Binary System of Diethyl Sulfide + n-Heptane and Diethyl Sulfide + 2,2,4-Trimethylpentane at (363.15 and 353.15) K

Sapei, E.[Erlin], Zaytseva, A.[Anna], Uusi-Kyyny, P.[Petri], Keskinen, K. I.[Kari I.], Aittamaa, J.[Juhani]

ABSTRACT