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Partition coefficient

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Description of key information

Calculated value of detectable components in water:

log Pow= 3.7 at 23°C

Estimated values of both not detectable components:

log Pow= 6.6 at 25°C

Key value for chemical safety assessment

Additional information

The log Pow was calculated based on individual solubilities in n-octanol and in water according to the ETAD method (pigment method) based on the OECD 105.

In the n-octanol all components of test item are detected corresponing to the calibration solution in THF and in the water only two components of test item are detected, Abietic acid and Dehydrogenated abietic acid.

As it ist not possible to calculate the log Pow on Monohydrogenated and Bishydrogenated abietic acid based on individual solubilities therefore both log Pow values have been estimated based on fragment method using KOWWIN (v1.68) module of software EPI Suite.

- Monohydrogenated abietic acid (main component): log Pow = 6.55

- Bishydrogenated abietic acid: log Pow = 6.63