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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

The Log Kow  of the substance is -1,05 at 25°C.

Key value for chemical safety assessment

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

Additional information

 Concerning the log Kow of trimethylenediamine (CAS 109-76-2), there are experimental data from an OECD 107 (shake flask method) guideline study available. The log Kow was determined to be -1.05 at 25 °C; the study was conducted without adjustment of the pH (BASF AG, 1989; report no.: BRU 89.037).

This result is supported by additional data from a non-guideline study, determining for trimethylenediamine a log Kow of -1.43 (temperature

not specified; Hansch et al, 1995; cited in LOGKOW database, 2010).

In addition, the result is supported by a calculated log Kow of -1.13 at 25 °C (KOWWIN v1.68, implemented in EPISuite v4.11; BASF SE, 2014).This estimate refers to the uncharged molecule.