Henry's Law Constants

Rolf Sander

NEW: Version 5.0.0 has been published in October 2023

Atmospheric Chemistry Division

Max-Planck Institute for Chemistry
Mainz, Germany


Henry's Law Constants





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 Please do not cite the old paper anymore.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 ConstantsInorganic speciesNitrogen (N) → pernitric acid

CAS RN:26404-66-0

Hscp d ln Hs cp / d (1/T) References Type Notes
[mol/(m3Pa)] [K]
3.9×10−1 8400 Leu and Zhang (1999) L
3.9×101 Amels et al. (1996) M
1.2×102 6900 Régimbal and Mozurkewich (1997) T
1.4×102 Warneck (1999) C
2.0×102 0 Jacob et al. (1989) C
Möller and Mauersberger (1992) E 106)


The first column contains Henry's law solubility constant Hscp at the reference temperature of 298.15 K.
The second column contains the temperature dependence d ln Hs cp / d (1/T), also at the reference temperature.


  • Amels, P., Elias, H., Götz, U., Steingens, U., & Wannowius, K. J.: Chapter 3.1: Kinetic investigation of the stability of peroxonitric acid and of its reaction with sulfur(IV) in aqueous solution, in: Heterogeneous and Liquid-Phase Processes, edited by Warneck, P., pp. 77–88, Springer Verlag, Berlin, doi:10.1007/978-3-642-61445-3_3 (1996).
  • Jacob, D. J., Gottlieb, E. W., & Prather, M. J.: Chemistry of a polluted cloudy boundary layer, J. Geophys. Res., 94, 12 975–13 002, doi:10.1029/JD094ID10P12975 (1989).
  • Leu, M.-T. & Zhang, R.: Solubilities of CH3C(O)O2NO2 and HO2NO2 in water and liquid H2SO4, Geophys. Res. Lett., 26, 1129–1132, doi:10.1029/1999GL900158 (1999).
  • Möller, D. & Mauersberger, G.: Aqueous phase chemical reaction system used in cloud chemistry modelling, in: EUROTRAC Special Publication: Clouds: Models and Mechanisms, edited by Flossmann, A., Cvitaš, T., Möller, D., & Mauersberger, G., pp. 77–93 (1992).
  • Régimbal, J.-M. & Mozurkewich, M.: Peroxynitric acid decay mechanisms and kinetics at low pH, J. Phys. Chem. A, 101, 8822–8829, doi:10.1021/JP971908N (1997).
  • Warneck, P.: The relative importance of various pathways for the oxidation of sulfur dioxide and nitrogen dioxide in sunlit continental fair weather clouds, Phys. Chem. Chem. Phys., 1, 5471–5483, doi:10.1039/A906558J (1999).


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.


106) Möller and Mauersberger (1992) assumed the solubility of HNO4 to be comparable to that of HNO3.

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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