Henry’s law solubility constant (via b and p)

defined via molality and partial pressure
symbol: $H_{\rm{s}}^{bp}$, unit: $\pu{mol m-3 Pa-1}$
https://doi.org/10.1351/goldbook.09026
Molality \(b\) of a species divided by the partial pressure \(p\) of that species in the gas phase under equilibrium conditions at infinite dilution: \[H_{\rm{s}}^{bp}: = \underset{b \to 0}{\rm{lim}}\frac{b}{p}\]
Notes:
  1. The coherent SI unit for \(H_{\rm{s}}^{bp}\) is \(\pu{mol m-3 Pa-1}\).
  2. Here, the symbol \(b\) is used for molality (instead of \(m\)) to avoid confusion with the symbol \(m\) for mass.
  3. Molality refers to the mass of solvent and should not be confused with content which refers to the mass of solution.
Example:
The Henry solubility of ozone in water at \(T = \pu{298.15 K}\) is \(H_{\rm{s}}^{bp}(\ce{O3}) = \pu{1.0E-7 mol kg-1 Pa-1}\).
See also: Henry’s law solubility constant
Source:
PAC, 2022, 94, 71. 'Henry’s law constants (IUPAC Recommendations 2021)' on page 76 (https://doi.org/10.1515/pac-2020-0302)