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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

The partition coefficient log Pow is between 6.96 - 9.91 (range of log pow of the single constituents of the mixture). 

Key value for chemical safety assessment

Additional information

There is company data for the partition coefficient available for the Fatty acids, C16-22, which indicates a log Pow > 5 (estimated, Oleon NV 2010).

The range of the partition coefficient (log Pow) is estimated by using a category approach based on the available QSAR data for its main constituents (palmitic acid: CAS 57-10-3, stearic acid: CAS 57-11-4, icosanoic acid: CAS 506-30-9 and docosanoic acid: CAS 112-85-6, with an increasing log Pow as the chainlength increases).