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Physical & Chemical properties

Partition coefficient

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Description of key information

The substance being highly insoluble, the log Kow were appraised by QSAR. The results obtained showed that the log Kow  values of the test substance are higher than 13.28.

Key value for chemical safety assessment

Additional information

The octanol/water partition coefficient of a complex reaction product was experimentally measured in accordance with OECD testing guideline 123 and GLP requirements. The test being insoluble in water, it could not be analytically detected in the water phase. Therefore, the ratio of the concentration of the test compound in 1-octanol by the concentration in water cannot be determined with the slow-stirring method.

As supportive data, QSAR (Kowwin v1.68) was ran to appraise fixed values for the constituents listed in section 1.2 of IUCLID.

The Log Kow values obtained with the Kowwin QSAR (v1.68) ranged from 13.28 to 27.93.

The log Kow value being not useful as no quantitative environmental CSA is required (see discussions in the CSR) and as no PNECs for soil and sediment are derived, no single exact log Kow value was selected.

The overall conclusion to be retained is: log Kow > 13.28