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Henry's Law Constants

www.henrys-law.org

Rolf Sander

NEW: Version 5.0.0 has been published in October 2023

Atmospheric Chemistry Division

Max-Planck Institute for Chemistry
Mainz, Germany

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Henry's Law Constants

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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 Please do not cite the old paper anymore.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 nitrogen (N) → Amines, amides, amino acids (C, H, O, N) → ethanolamine

FORMULA:HOC2H4NH2
CAS RN:141-43-5
STRUCTURE
(FROM NIST):
InChIKey:HZAXFHJVJLSVMW-UHFFFAOYSA-N

Hscp d ln Hs cp / d (1/T) References Type Notes
[mol/(m3Pa)] [K]
4.2×103 8300 Kim et al. (2008) M 552)
6.0×104 Bone et al. (1983) M 12)
1.1×104 Modarresi et al. (2007) Q 68)
9.7×102 5800 Nguyen (2013) ? 11) 567)

Data

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.

References

  • Bone, R., Cullis, P., & Wolfenden, R.: Solvent effects on equilibria of addition of nucleophiles to acetaldehyde and the hydrophilic character of diols, J. Am. Chem. Soc., 105, 1339–1343, doi:10.1021/JA00343A044 (1983).
  • Kim, I., Svendsen, H. F., & Børresen, E.: Ebulliometric determination of vapor-liquid equilibria for pure water, monoethanolamine, N-methyldiethanolamine, 3-(methylamino)-propylamine, and their binary and ternary solutions, J. Chem. Eng. Data, 53, 2521–2531, doi:10.1021/JE800290K (2008).
  • Modarresi, H., Modarress, H., & Dearden, J. C.: QSPR model of Henry’s law constant for a diverse set of organic chemicals based on genetic algorithm-radial basis function network approach, Chemosphere, 66, 2067–2076, doi:10.1016/J.CHEMOSPHERE.2006.09.049 (2007).
  • Nguyen, T.: Amine Volatility in CO2 Capture, Ph.D. thesis, The University of Texas at Austin, USA, URL https://rochelle.che.utexas.edu/files/2015/02/Nguyen-2013-Amine-Volatility-in-CO2-Capture.pdf (2013).

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

11) Measured at high temperature and extrapolated to T⊖ = 298.15 K.
12) Value at T = 293 K.
68) Modarresi et al. (2007) use different descriptors for their calculations. They conclude that a genetic algorithm/radial basis function network (GA/RBFN) is the best QSPR model. Only these results are shown here.
552) Calculated from the slope of y1P vs x1, using the tabulated VLE data from Kim et al. (2008) between 40 °C and 100 °C. Only dilute solutions with x1 ≤ 0.1 were considered.
567) Nguyen (2013) refer to Kim et al. (2008) as the source, but this value cannot be found there.

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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