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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Measured log Pow= 5.5 at 25°C.

Additionally, the individual components were calculated as follows:

Log Pow of Structure A, main component= 5.6 - 5.8

Log Pow of Structure B= 5.8

Key value for chemical safety assessment

Log Kow (Log Pow):
5.5
at the temperature of:
25 °C

Additional information

The determination was carried out by HPLC method according to the EU test method L383 A/63-73 (EU A.8).

Triphenylamine exhibits the second highest log Pow value listed in the EU test procedure (5.7). DDT exhibits the highest log Pow value (6.2), but was not used due to toxicological reasons.

In addition, the log Pow values of the individual constituent have been generated using KOWWIN (v1.68) module of software EPI Suite v.4.11. The molecular weight of both structures are within range of training and validation set.