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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Partition coefficient

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Description of key information

Octanol-water partition coefficient [Fatty alcohols C16 – C18 (even numbered), branched and linear]: 6.1 - 7.6 at 20°C (QSAR)

Key value for chemical safety assessment

Additional information

Fatty alcohols C16 – C18 (even numbered), branched and linear is a substance of unknown or variable composition (UVCB) containing linear and branched alcohols with carbon number in the range C14-C20. Partition coefficient is only meaningful in respect of the individual constituents such a substance. A result for the whole substance is not scientifically meaningful for the purpose of assessment of exposure or risk. The need for a sound understanding of partition coefficient is acceptably met by estimation of the individual constituents present in the substance. A predicted log Kow of 6.1 - 7.6 at 20°C was determined for the constituents of the substance using a validated QSAR estimation method. The result is considered reliable and selected as key study. This value is supported by a log Kow of >3 reported for the substance in a secondary source to which no reliability could be assigned.