ABSTRACT

The coexistence curves of the liquid-liquid equilibria (LLE) for (?-caprolactam + heptane), (?-caprolactam + octane), (e-caprolactam + nonane), (?-caprolactam + decane), and (?-caprolactam + 2,2,4-trimethylpentane) have been determined by critical opalescence with a laser scattering technique. All the curves show an upper critical solution temperature (UCST) and have a rather horizontal top, and their symmetry depends on the size of the alkane. The UCST increases almost linearly with the chain length of the alkane. For the octane mixture, the UCST is lower than for the solution including 2,2,4-trimethylpentane.

Compounds

#	Formula	Name
1	C7H16	heptane
2	C8H18	octane
3	C9H20	nonane
4	C10H22	decane
5	C8H18	2,2,4-trimethylpentane
6	C6H11NO	1-aza-2-cycloheptanone

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	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB:UFactor:4	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB:UFactor:6	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB:UFactor:6	1
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB:UFactor:6	1
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB:UFactor:4	1
POMD	6	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	VISOBS	1
POMD	6 1	Liquid-liquid equilibrium temperature, K ; Liquid mixture 1	Mole fraction - 6; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Laser Detection	21
POMD	6 2	Liquid-liquid equilibrium temperature, K ; Liquid mixture 1	Mole fraction - 6; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Laser Detection	23
POMD	6 3	Liquid-liquid equilibrium temperature, K ; Liquid mixture 1	Mole fraction - 6; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Laser Detection	21
POMD	6 4	Liquid-liquid equilibrium temperature, K ; Liquid mixture 1	Mole fraction - 6; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Laser Detection	20
POMD	6 5	Liquid-liquid equilibrium temperature, K ; Liquid mixture 1	Mole fraction - 6; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Laser Detection	21

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

Thermodynamics of Mixtures Containing a Strongly Polar Compound. 9. Liquid-Liquid Equilibria for epsilon-Caprolactam + Selected Alkanes

Alonso, V.[Victor], Alonso, I.[Ivan], Mozo, I.[Ismael], Gonzalez, J. A.[Juan Antonio], Fuente, I. G. d. l.[Isaias Garcia de la], Cobos, J. C.[Jose Carlos]

ABSTRACT