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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 Pow for DCPD is cited Log Pow as 2.78 in a peer reviewed handbook. QSAR predictions provide a value of 3.16. 

Key value for chemical safety assessment

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

Additional information

The octanol/water partition coefficient (log Pow) for the test substance is 2.78. No information on the primary source of the data or the methods used is available. However, this information is taken from a reliable peer reviewed database and so can be considered reliable and suitable for use as the key study for this endpoint (WHO ICSC 2005). This value is also cited by MITI (1997) which was unavailable for review but was included in the OECD SIDS. QSAR modelling (KOWWIN v1.67a in US EPA 2009) predicts a value of 3.16.

The data presented here are for the high purity form of DCPD. No information is available specifically on the partition coefficient of the commercial form of DCPD but it is not expected to be significantly different from the high purity form.