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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Key value for chemical safety assessment

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

Additional information

In the Klimisch 2 study from CABB (2007) the partition coefficient of ETCA was calculated using the international accepted QSAR tool EPIwin. For 25 °C the log Pow was calculated to be 2.22. The results of this study are considered reliable and relevant for the risk assessment. Moreover, this value is supported by an experimental study as cited by the EPIWIN tool (HANSCH,C ET AL. (1995)) where an logPow of 2.39 was found. Since no further experimental details were provided, the calculated value is used for the risk assessment.


Both values indicate that ETCA has a low log Pow and will be below the trigger value of 3. For the risk assessment, the calculated log Pow will be used, i.e., 2.22.