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Physical & Chemical properties

Partition coefficient

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Description of key information

log Pow - calculated using KOWWIN v1.68 (weight-averaged value): 6.26
log Pow - calculated from weight-averaged log Koc value: 6.05

Key value for chemical safety assessment

Log Kow (Log Pow):
6.16

Additional information

The key value for chemical safety assessment is derived from the various calculated log Pow values (average of values 6.26 and 6.05).

The following types of calculations were applied:

1. based on weight-averaged log Koc values using the TGD equation for predominantly hydrophobic substances: log Koc = 0.81 log Pow + 0.10 thus log Pow = (log Koc – 0.10)/0.81 (2003 EU Technical Guidance Document on Risk Assessment Part III, Chapter 4, Section 4.3, pp 24 – 27)

2. based on EPIsuite v 4.10, KOWWIN v 1.68 log Pow values for (possible) individual constituents of the substance; a weighting based on normalized composition was applied to derive a log Pow value for the whole substance.