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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Partition coefficient

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Administrative data

Link to relevant study record(s)

Description of key information

The log Pow of 2-chloropropionic acid is 0.82 at pH 1

Key value for chemical safety assessment

Log Kow (Log Pow):
at the temperature of:
20.5 °C

Additional information

The log Pow has been measured using the shake flask method according to OECD 107 and was found to be 0.82 at pH 1 and at 20.5 °C. This is a recently conducted study by the registrant and is regarded as a key study.

An additional secondary reliable source reports a value is 0.76 although no pH or temperature are presented.

Additional reported values are < -2.4 and 0.65 at pH 3 and 7.2 respectively and the log Pow has also been modelled using the incremental method of Rekker and was found to be 0.854. However, the actual measured values are considered to be of greater reliability than the modelled value.

It is considered that the shake flask result according to OECD 107 is the most reliable result and so this is taken as the key value.