ABSTRACT

Experimental data for Henry s law constant of organic solutes at temperatures between (313.15 and 363.15) K are unavailable or scarce. A method is presented to measure Henry s law constant of organic solutes in water at these temperatures known as extended Equilibrium Partitioning in Closed Systems (extended EPICS). Extended EPICS rely upon liquid concentration sampling rather than the gas-phase headspace analyses required by the basic EPICS method. The results for four selected organic chemicals (benzene, methylbenzene, chlorobenzene, and bromobenzene) agree well with values calculated from literature solute vapor pressure and solubility data and from correlations.

Compounds

#	Formula	Name
1	C6H6	benzene
2	C7H8	toluene
3	C6H5Cl	chlorobenzene
4	C6H5Br	bromobenzene
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 5	Henry's Law constant (mole fraction scale), kPa - 1 ; Liquid	Temperature, K; Liquid	Mole fraction - 1; Liquid	Liquid Gas	UV Spectrometer	3
POMD	2 5	Henry's Law constant (mole fraction scale), kPa - 2 ; Liquid	Temperature, K; Liquid	Mole fraction - 2; Liquid	Liquid Gas	UV Spectrometer	3
POMD	3 5	Henry's Law constant (mole fraction scale), kPa - 3 ; Liquid	Temperature, K; Liquid	Mole fraction - 3; Liquid	Liquid Gas	UV Spectrometer	3
POMD	4 5	Henry's Law constant (mole fraction scale), kPa - 4 ; Liquid	Temperature, K; Liquid	Mole fraction - 4; Liquid	Liquid Gas	UV Spectrometer	3

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

Measuring the Aqueous Henry's Law Constant at Elevated Temperatures Using an Extended EPICS Technique

Lau, K., Rogers, T. N., Chesney, D. J.

ABSTRACT