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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Environmental fate & pathways

Henry's Law constant

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Description of key information

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
1 031 000
at the temperature of:
25 °C

Additional information

The calculated value for H at 25 °C is: 1.031 MPa m3/ mol = 10.18 atm m3/ mol

As a consequence of this high value for Henry's Law constant, the substance is very volatile from water.

According to "OECD Series on Testing and Assessment / Adopted Guidance and Review Documents, No. 23: Guidance Document on Aquatic Toxicity Testing of Difficult Substances and Mixtures (2000)": "As an approximation, if H is greater than 100 Pa m3/mol, more than 50% of the substance could be lost from the water phase in 3-4 hours".