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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Diss Factsheets

Environmental fate & pathways

Henry's Law constant

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Administrative data

Link to relevant study record(s)

Description of key information

The distribution model submitted with this application indicates that the bulk of the material finding its way to the environment will occur in the atmosphere.  The Henry's Law constant used in the UK Department of the Environment review in 1996 is an experimentally derived value of 3.47

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
at the temperature of:
20 °C

Additional information

The EuroChlor review conducted at the request of the European Commission to address concerns relating to chemical pollution of North Sea provides the following useful value for Henry's Law constant.

Henry’s Law constant (PA.m3/mol) -1144.66