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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 = 1.9 (Kow = 79) at pH of 6.7 (temperature not provided).

Key value for chemical safety assessment

Additional information

The partition coefficient of MIBK was measured in a study of Klimisch-2 reliability by Eadsforth (1983), using an equivalent method to the one described in the OECD Guidelines for the Testing of Chemicals No. 117.

Based on the data obtained in the key study, MIBK has a log Kow of 1.9 and a Kow of 79 at a pH of 6.7. Therefore MIBK bioaccumulation potential in aquatic and terrestrial organisms is expected to be low.