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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Henry's Law constant: Log Kaw 2.69 ± 0.13 at 21.7°C (equivalent to dimensional Henry's law constant 12 atm m3 mol-1).

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
1 195 640
at the temperature of:
25 °C

Additional information

A log Kaw value of 2.69 ± 0.13 at 21.7°C was determined in a reliable study conducted according to generally accepted scientific principles.

This is equivalent to a dimensional Henry's law constant value of 12 atm m3 mol-1. This indicates a high potential for volatilisation from water.