Henry's Law Constants

Rolf Sander

Atmospheric Chemistry Division

Max-Planck Institute for Chemistry
Mainz, Germany

Errata

Contact, Imprint, Acknowledgements

When referring to the compilation of Henry's Law Constants, please cite this publication:

R. Sander: Compilation of Henry's law constants (version 5.0.0) for water as solvent, Atmos. Chem. Phys., 23, 10901-12440 (2023), doi:10.5194/acp-23-10901-2023

The publication from 2023 replaces that from 2015, which is now obsolete. Please do not cite the old paper anymore.

Henry's Law Constants → Organic species with other elements → Mercury (Hg) → chloromethylmercury

FORMULA:	CH₃HgCl
CAS RN:	115-09-3
STRUCTURE (FROM NIST):
InChIKey:	BABMCXWQNSQAOC-UHFFFAOYSA-M

$H_{s}^{cp}$	$d ln H_{s}^{cp} / d (1/ T)$	References	Type	Notes
[mol/(m³Pa)]	[K]
2.2×10¹	1800	Iverfeldt and Lindqvist (1982)	M	33) 826)
1.5×10¹		Talmi and Mesmer (1975)	M	88)
2.0×10¹	4100	WHO (1990)	C	33)
	5300	Abraham et al. (2008)	Q	215)
2.6×10¹		Schroeder and Munthe (1998)	?	21) 81)
1.5×10¹		Iverfeldt and Persson (1985)	?	220)

Data

The first column contains Henry's law solubility constant

H_{s}^{cp}

at the reference temperature of 298.15 K.
The second column contains the temperature dependence

d ln H_{s}^{cp} / d
(1/ T)

, also at the reference temperature.

References

Abraham, M. H., Gil-Lostes, J., Acree, Jr., W. E., Cometto-Muñiz, J. E., & Cain, W. S.: Solvation parameters for mercury and mercury(II) compounds: calculation of properties of environmental interest, J. Environ. Monit., 10, 435–442, doi:10.1039/B719685G (2008).
Iverfeldt, Å. & Lindqvist, O.: Distribution equilibrium of methyl mercury chloride between water and air, Atmos. Environ., 16, 2917–2925, doi:10.1016/0004-6981(82)90042-7 (1982).
Iverfeldt, Å. & Persson, I.: The solvation thermodynamics of methylmercury(II) species derived from measurements of the heat of solution and the Henry’s law constant, Inorg. Chim. Acta, 103, 113–119, doi:10.1016/S0020-1693(00)87476-9 (1985).
Schroeder, W. H. & Munthe, J.: Atmospheric mercury – An overview, Atmos. Environ., 32, 809–822, doi:10.1016/S1352-2310(97)00293-8 (1998).
Talmi, Y. & Mesmer, R. E.: Studies on vaporization and halogen decomposition of methyl mercury compounds using gc with a microwave detector, Wat. Res., 9, 547–552, doi:10.1016/0043-1354(75)90080-9 (1975).
WHO: Environmental Health Criteria 101 – methylmercury, Tech. rep., World Health Organization, URL https://www.inchem.org/documents/ehc/ehc/ehc101.htm (1990).

Type

Table entries are sorted according to reliability of the data, listing the most reliable type first: L) literature review, M) measured, V) VP/AS = vapor pressure/aqueous solubility, R) recalculation, T) thermodynamical calculation, X) original paper not available, C) citation, Q) QSPR, E) estimate, ?) unknown, W) wrong. See Section 3.1 of Sander (2023) for further details.

Notes

21)	Several references are given in the list of Henry's law constants but not assigned to specific species.
33)	Fitting the temperature dependence dlnH/d(1/T) produced a low correlation coefficient (r² < 0.9). The data should be treated with caution.
81)	Value at T = 288 K.
88)	Value at T = 295 K.
215)	Temperature dependence calculated using linear free energy relationships (LFERs).
220)	More than one reference is given as the source of this value.
826)	The value from their experiment 7 at 10 ^°C is not used in the determination of the temperature dependence because of very different ionic strengths and concentrations for that experiment.

The numbers of the notes are the same as in Sander (2023). References cited in the notes can be found here.

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