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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The log octanol-water partition coefficient of (Z)-octadec-9-enol is 7.07.

Key value for chemical safety assessment

Log Kow (Log Pow):
7.07
at the temperature of:
25 °C

Additional information

A predicted log Kow value of 7.07 at 25°C was determined for the substance with the use of a validated QSAR estimation method. The result is considered to be reliable.

Discussion of trends in the Category of C6-24 linear and essentially-linear aliphatic alcohols:

As chain length increases, the free energy required for a molecule to dissolve becomes less favourable for larger molecules. The octanol-water partition coefficient increases with molecular weight because each additional -CH2- group makes the octanol phase more preferred over water in terms of relative solvation energy.