ABSTRACT

Isobaric (vapour + liquid) equilibrium data at pressures of (14.0 to 91.2) kPa over the whole composition range were measured for binary systems of (ethanol + glycerol), (water + NaCl) and (water + KCl). Moreover, ternary systems (glycerol + ethanol + NaCl), (glycerol + water + NaCl) and (glycerol + water + KCl) and quaternary system of (water + ethanol + NaCl + glycerol) were measured at 91.2 kPa. All data were obtained using a Othmer-type ebulliometer. Due to the low solubility of NaCl in ethanol, it was not observed the salt effect on the VLE for the system (ethanol + NaCl + glycerol). The presence of salt (NaCl or KCl) increased the boiling point of water, and this effect was less pronounced at lower pressures, probably due to the low resistance to volatilization at such pressures. Simultaneous salting-in and salting-out effect were observed in the systems (water + NaCl + glycerol) and (water + KCl + glycerol), which is characterized in literature as a anomalous behaviour.

Compounds

#	Formula	Name
1	C2H6O	ethanol
2	C3H8O3	glycerol
3	ClNa	sodium chloride
4	ClK	potassium chloride
5	H2O	water

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	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Vibrating tube method	1
POMD	2	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Vibrating tube method	1
POMD	5	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	11
POMD	5	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Vibrating tube method	1
POMD	2 1	Boiling temperature at pressure P, K ; Liquid	Mass fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	16
POMD	2 1	Mass density, kg/m3 ; Liquid	Mass fraction - 2; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	11
POMD	3 5	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mass fraction - 3; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	56
POMD	3 5	Mass density, kg/m3 ; Liquid	Mass fraction - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	15
POMD	4 5	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mass fraction - 4; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	56
POMD	4 5	Mass density, kg/m3 ; Liquid	Mass fraction - 4; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	13
POMD	2 1 3	Boiling temperature at pressure P, K ; Liquid	Solvent: Mass fraction - 3; Liquid Mass fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	26
POMD	2 1 3	Mass density, kg/m3 ; Liquid	Solvent: Mass fraction - 3; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	22
POMD	2 3 5	Boiling temperature at pressure P, K ; Liquid	Solvent: Mass fraction - 3; Liquid Mass fraction - 5; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	40
POMD	2 3 5	Mass density, kg/m3 ; Liquid	Solvent: Mass fraction - 3; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	40
POMD	2 4 5	Boiling temperature at pressure P, K ; Liquid	Solvent: Mass fraction - 4; Liquid Mass fraction - 5; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	31
POMD	2 4 5	Mass density, kg/m3 ; Liquid	Solvent: Mass fraction - 4; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	29
POMD	2 5	Mass density, kg/m3 ; Liquid	Mass fraction - 2; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	7
POMD	1 3	Mass density, kg/m3 ; Liquid	Mass fraction - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	2

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

NaCl and KCl effect on (vapour + liquid) equilibrium of binary, ternary and quaternary systems involving water, ethanol and glycerol at low pressures

Faggion, H.[Heron], Gaschi, P. S.[Paola S.], Corazza, M. L.[Marco L.], Cardozo-Filho, L.[Lucio], Igarashi-Mafra, L.[Luciana], Mafra, M. R.[Marcos R.]

ABSTRACT