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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 partition coefficient n-octanol/water was determined in the key study by the flask method according to EU- and OECD-methods.

The log Pow for adipic acid dihydrazide is –2.7.

Key value for chemical safety assessment

Log Kow (Log Pow):
-2.7
at the temperature of:
20 °C

Additional information

A second source of the partition coefficient determined by the flask method is found in the Japanese NITE data bank: log Pow = –2.05, which is in reasonable agreement with the result of the key study.

The QSAR calculated value is also comparable: log Pow = –2.4.