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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 QSAR calculated partition coefficient 1-octanol/water of Isophorone diisocyanate cyclodimer (uretdione type), which is the main constituent of the title substance, is reported as 9.73. 

Key value for chemical safety assessment

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

Additional information

Since rapid hydrolysis is expected in the environment, this value is not relevant. It also does not represent the complete substance but only one constituent. The higher oligomers are expected to have even higher log Kow values.