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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Log Kow of has been determined to be > 6.50 at 30°C according to OECD 117 .

Key value for chemical safety assessment

Additional information

The partition coefficient (n-octanol/water) of 2,2-di-(tert-amylperoxy)butane has been determined to be greater than 3.16 x 10^6, log10 Pow > 6.50, determined using an HPLC method designed to be compatible with Method OECD TG 117 and GLP requirements (O'Connor, 2018). The test was considered as valid.