ABSTRACT

A solid-phase extraction method has been developed for measuring low solubilities of hydrocarbon in water. The solubilities of hexane, heptane and octane in water were determined at temperatures ranging from (30 to 180) 0C. The solubilities of alkanes in water at 30 0C decrease with increasing carbon number. At 30 0C, the mole fraction solubility is (2.06 1 0.01) x 10-6 for hexane and (0.120 1 0.002) x 10-6 for octane. The temperature effect on solubility in water is much more important for octane than for hexane. Increasing the temperature from (30 to 180) 0C increases the solubilities by a factor of 23 for hexane and 110 for octane.

Compounds

#	Formula	Name
1	C6H14	hexane
2	C7H16	heptane
3	C8H18	octane
4	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 4	Mole fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Chromatography	6
POMD	2 4	Mole fraction - 2 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Chromatography	8
POMD	3 4	Mole fraction - 3 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Chromatography	14

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

Solubilities of n-Alkanes (C6 to C8) in Water from 30 0C to 180 0C.

Marche, C.[Celine], Ferronato, C.[Corinne], Jose, J.[Jacques]

ABSTRACT