Registration Dossier
Registration Dossier
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EC number: 942-520-9 | CAS number: -
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
The octanol-water partition coefficients of Guerbet alcohols, C24-26, branched and cyclic is ca. 11.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 10.96
- at the temperature of:
- 20 °C
Additional information
Due to its hydrophobic structure the experimental determination of the logPow of Guerbet alcohols, C24 -26, branched and cyclic is not possible as no sufficiently sensitive analytical method is available. According to REACH Guidance on information requirements and chemical safety assessment Chapter R.7.1.8 highly accurate measurements of high log Pow are not possible and no standard method is available for log Pow > 8.3.
To determine a reliable logPow the values of selected components of Guerbet alcohols, C24 -26, branched and cyclic were calculated
using the KOWWIN v1.68 software from EPI Suite. With the molecular weight of >= 354.65 — <= 382.71 Guerbet alcohols, C24 -26, branched and cyclic falls within the range of the log KOWWIN model is valid for of 18.02 to 719.92 (for the training set) and 27.03 to 991.15 (for the validation set).
For the Guerbet alcohols C24 -26, branched and cyclic, the model accounts for each fragment, therefore also for this aspect the substances fit within the domain.
The log Pow values of 9 selected components of Guerbet alcohols was calculated. As the single values do not differ significantly a geometric mean instead of a weighed mean was calculated. The mean LogPow of the 9 the selected constituents is 10.96.
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