Registration Dossier
Registration Dossier
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EC number: 449-360-4 | CAS number: 647828-16-8
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The Koc of the substance was determined with the HPLC screening study according to OECD TG 121. The retention time of the substance could not be determined because it was much higher than the reference substance DDT (RT was 67 minutes), which may partly be due to the substance viscosity, though information on this is not available. For the risk assessment, a point value is needed to estimate the partitioning between sludge and water, sediment and water and soil in water. In addition, the Koc value is needed for the PNEC derivation for sediment and soil. In this case, the following QSAR equation can be used: log Koc = 0.81 log Kow + 0.10, according to Sablic et al. (1995) on hydrophobics. This results in a Koc = 4790 L/kg and log Koc = 3.68 L/kg. The QSAR is scientifically valid. The test substance can be considered a hydrophobic substance because it mainly consists of hydrocarbons and only one oxygen. Therefore the substance is in the applicability domain of the QSAR.
Key value for chemical safety assessment
- Koc at 20 °C:
- 4 790
Additional information
[LogKoc: 3.68]
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