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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

The calculated (using the calculation method of the EU A.8 guideline) and estimated (using KOWWIN v.1.68 of EPIWEB v.4.1) log partition coefficients of the test substance were determined to be 6.05 (Younis S, 2012) and 5.45 (US EPA, 2012) , respectively.

Key value for chemical safety assessment

Log Kow (Log Pow):

Additional information

The partition coefficient of the main constituent ((i.e., (9E,12E)-N,N-bis(2-hydroxyethyl) octadeca-9,12-dienamide) of the test substance was determined according to the calculation method of the EU A.8 guideline. The octanol/water partition coefficient was derived using the expression: Log P = sum of fragments (α) + sum of factors (β) (Younis S, 2012).

The logarithmic octanol-water partition coefficient (log Kow) was estimated using KOWWIN v1.68 program of EPIWEB v 4.1.Initially, using SMILES as the input parameter in the KOWWIN v1.68 program, the values of the Kow was calculated for the individual components. Finally, the overall water solubility value was calculated on a weighted-average basis using the mole fractions of the individual components (US EPA, 2012).