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Environmental fate & pathways

Henry's Law constant

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Description of key information

Using the representative structures of the target substance (C15-C36), both prediction tools give an "incomplete result". 
Calculation with EUSES 2.1: 2.56E4 Pa*m³/mol

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
25 600
at the temperature of:
25 °C

Additional information

The Henry´s Law constant of the calcium sulfonate target substance (C15-C36) was determined by using EUSES v2.1 (Chemservice S.A., 2013).Henry´s law states that the solubility of a gas in a liquid solution at a constant temperature will be proportional to the partial pressure of the gas which is above the solution (Henry, 1803). Sometimes, the term “air/water partition coefficient” refers to the dimensionless Henry´s law constant (HLC) and therefore describes the ration of the equilibrium concentration of a dissolved substance in air and water. This parameter is calculated from temperature corrected experimental vapour pressure and water solubility. A Henry´s Law Constant of 2.56E4 Pa*m³/mol was calculated for the calcium sulfonate target substance (C15-C36) at 25 °C.