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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 of cyclohexane at 20°C is 3.44.

Key value for chemical safety assessment

Log Kow (Log Pow):
3.44
at the temperature of:
20 °C

Additional information

Exploring QSAR , Hydrophobic, Electric, and Steric Constants by Hansch et al (1995) is a peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint. The supporting study (WHO ICSC 1994) is also a peer reviewed source and reports a value of 3.4 (temperature not reported) and supports the value reported in the key study.