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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Physical & Chemical properties

Partition coefficient

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Description of key information

Log Kow (Pow) for Di-isotridecyl phthalate is determined to be 13.5 at approx. 23 degrees C. 

Key value for chemical safety assessment

Log Kow (Log Pow):
at the temperature of:
23 °C

Additional information

The partition coefficient for DTDP was determined as 13.5 at approximately 23 °C in a study performed according to national guideline ASTM-E1147 (Standard Test Method for Partition Coefficient (N-Octanol/Water) Estimation by Liquid Chromatography). According to USEPA estimation (using KOWWIN version 1.67, a subroutine of the computer program EPI SuiteTM version 4.00. Octanol / Water Partition Coefficient estimations performed by KOWWIN are based on an atom/fragment contribution method of W. Meylan and P. Howard) the partition coefficient for DTDP was calculated as 12.23.