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Partition coefficient

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Description of key information

Partition coefficient: log Kow = -3.5

Key value for chemical safety assessment

Log Kow (Log Pow):
-3.5
at the temperature of:
20 °C

Additional information

A log Kow value of -3.5 was determined in a reliable study (Michael 1979) conducted according to generally accepted scientific principles comparable to the OECD guideline. Although the measured temperature is not mentioned, it is still considered as key study and the outline is fully documented.

The key study is supported by an estimated log Kow value of -4.6 which was obtained for ATMP-H using an accepted calculation method (Atom/Fragment contribution method). In available secondary source, log Kow value of -3.5 was reported for ATMP-H.