Registration Dossier
Registration Dossier
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EC number: 614-482-0 | CAS number: 68439-46-3
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
log Pow – calculation based on structure and fragments (Lyman et al. and KOWWIN v1.68): 3.40-4.27 (avg = 4.05)
log Pow - calculated from weight-averaged log Koc value: 3.75
log Pow - calculated using KOWWIN v1.68 (weight-averaged value): 3.42
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 3.74
- at the temperature of:
- 25 °C
Additional information
The key value for chemical safety assessment is derived from the various calculated log Pow values (average of all values 4.05, 3.42 and 3.75) for Alcohols, C9-11, ethoxylated (EO < 2.5) (CAS 68439-46-3).
The following types of calculations were applied:
1. a combination of calculations according to Lyman et al. (1990) and KOWWIN v1.68 (structures considered not further specified); the average of the overall range (log Pow 3.40 – 4.27), i.e. log Pow 4.05, was used in the calculation to derive the key value
2. 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)
3. 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.
The key value for chemical safety assessment is an average of all 3 log Pow values (4.05, 3.42 and 3.75) obtained with the calculation and in the experiment.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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