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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Description of key information

The log Kow for the test item was estimated to be 8.34.

Key value for chemical safety assessment

Log Kow (Log Pow):
8.34

Additional information

As the test item bis(4-tert-butylcyclohexyl) peroxydicarbonate is a substance difficult to test the log Kow was estimated using EPISuite (US EPA, 2012), and corresponding QMRF and QPRF documents were prepared. The predicted value is log Kow = 8.34.

Approach for regulatory interpretation of the model result: The regulatory cut-off value for the log Kow ranges between 3 (potential for bioaccumulation and adsorption) and 4 (classification and labelling).

Outcome: The estimated log Kow for the substance is relatively high and indicates the substance's potential for adsorption and bioaccumulation.

Conclusion: The final result is considered adequate for a regulatory conclusion. No additional information is required.