ABSTRACT

Solid-liquid equilibrium temperatures, obtained using a differential scanning calorimetry (DSC) tech-nique, are reported for indole(1) + n-C20(2), or +n-C24(2), or +n-C50(2) systems. Values of the eutectic heatand of the heat of melting needed to determine the final composition of the eutectic points on the basis ofthe Tamman plots are also given. At x1greater than x1eu(eutectic mole fraction), the mixtures with n-C20, or n-C24show positive deviations from the Raoult'ys law, which reveal the existence of indole-indole interactionsin that range of concentration. At x1less than x1eu, the systems show an ideal behaviour. The mixture with n-C50is characterized by negative deviations from the Raoult s law due to the very different size of the mixturecomponents. Systems formed by indole and n-alkane, aromatic compound or alkyl-naphthalene havebeen investigated by means of the DISQUAC model. The interaction parameters for the aliphatic/aminecontacts in the studied mixtures are reported. DISQUAC improves results from the ideal solubility model.

Compounds

#	Formula	Name
1	C8H7N	1H-indole
2	C20H42	eicosane
3	C24H50	tetracosane
4	C50H102	pentacontane

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	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	1	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	2	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	2	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	3	Normal melting temperature, K ; Crystal 1			Crystal 1 Liquid Air at 1 atmosphere	DTA	1
POMD	3	Triple point temperature, K ; Crystal 2			Crystal 2 Crystal 1 Air at 1 atmosphere	DSC	1
POMD	3	Molar enthalpy of transition or fusion, kJ/mol ; Crystal 1			Crystal 1 Liquid Air at 1 atmosphere	DSC	1
POMD	3	Molar enthalpy of transition or fusion, kJ/mol ; Crystal 2			Crystal 2 Crystal 1 Air at 1 atmosphere	DSC	1
POMD	4	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	4	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	2 1	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2	DTA	4
POMD	2 1	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	DTA	6
POMD	1 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal 1 - 3	DTA	2
POMD	1 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal 2 - 3	DTA	4
POMD	1 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	DTA	4
POMD	1 4	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 4	DTA	9

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Solid-liquid equilibria of indole binary systems

Boudouh, I.[Issam], Barkat, D.[Djamel], Gonzalez, J. A.[Juan Antonio], Djemai, I.[Ismahane]

ABSTRACT