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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 octanol water partition coefficient of cumyl hydroperoxide was performed using high performance liquid chromatography (HPLC), A standard stock solution of 12.56 ug/ml was prepared in a mixture of acetonitrile and water (70:30; v/v) and injected three times. A reference item solution was injected six times. The elution time of the test article, on a reversed-phase column, was compared with the elution behaviour of the reference mixture. The log Pow was calculated using a regression curve (log K' vs. log Pow). 

Key value for chemical safety assessment

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

Additional information

Result obtained in a Klimisch 1 sudy. This value was supported by the value obtained via a generally accepted calculation method.