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Environmental fate & pathways

Henry's Law constant

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Henry's law constant
Type of information:
experimental study
Adequacy of study:
supporting study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
no guideline followed
Principles of method if other than guideline:
The Henry's law constant (H) was established by calculation using values for vapour pressure and water solubility of the test substance at 20°C.
GLP compliance:
Key result
other: 6.0e-4 Pa m³/mol
20 °C
Henry's law constant (H): 6 x 10e-9 atm m³/mol (6 x 10e-4 Pa m³/mol)
Executive summary:

Henrys law constant was calculated using the purified water solubility value measured at 20°C, and the interpolated value of vapour pressure at 20°C. Henry's law constant has been calculated as 6 x 10e-9 atm m³/mol (6 x 10e-4 Pa m³/mol)

Description of key information

Henry's law constant of the test substance is less than 3e-2 Pa-m3/mol, suggesting little potential for volatilisation in the environment.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):

Additional information