Henry's Law Constants

Rolf Sander

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 4.0) for water as solvent, Atmos. Chem. Phys., 15, 4399-4981 (2015), doi:10.5194/acp-15-4399-2015

A new version is currently under peer review:

R. Sander: Compilation of Henry's law constants (version 5.0.0-rc.0) for water as solvent, doi:10.5194/egusphere-2023-1584

The database on this web page will be updated to version 5.0.0 when the peer review of the manuscript is completed.


In addition to searching and browsing online, there are two options to download all Henry's law constants in machine-readable format:


The zip archive contains the whole database in PostgreSQL syntax.


The zip archive contains Fortran90 files defining several variants of the Henry's law constants. Code snippets from these files can be used via 'copy and paste'. For example, oxygen values are represented in HscpSI.f90 as:
! species: oxygen
! formula: O_2
! trivial:
! casrn:   7782-44-7
HscpSI____7782_44_7 = 1.2E-05 * EXP(1700.*(1./T-1./298.15))
! [mol/(m^3~Pa)] type: L, ref: 2828
HscpSI____7782_44_7 = 1.3E-05 * EXP(1400.*(1./T-1./298.15))
! [mol/(m^3~Pa)] type: M, ref: 491
HscpSI____7782_44_7 = 1.3E-05
! [mol/(m^3~Pa)] type: ?, ref: 523
For each value, a reference number is added as a comment. The full references can be found in the BibTeX file henry.bib, which is also included in the zip archive.

Other formats

Other formats are not provided here.

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