Registration Dossier
Registration Dossier
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EC number: 481-740-5 | CAS number: 848301-67-7
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
- EU Method C.19: Adsorption coefficient (Koc): > 4.27 x 10e5; log 10 Koc > 5.63 [the limit value of 5.63 is based on the retention time of the reference substance DDT].
- Estimation by calculation [PCKOWIN, v1.66 (US EPA)]: The adsorption coefficient of the test material has been estimated to be greater than log10 Koc 5.37 by QSAR calculation. Only a limit value could be achieved by this method as the original partition coefficient from which the value derived was a limit value itself. By computer estimation the adsorption coefficient of the test material was estimated to be in the range log10 Koc 2.63 to 7.70.
Key value for chemical safety assessment
Additional information
A study was performed according to EU Method C.19 (HPLC method) in which the adsorption coefficient for the whole substance was reported to be greater than 4.27E+05 (log Koc>5.63) (O’Connor and Mullee, 2006).
Moreover, an estimation by calculation was performed [PCKOWIN, v1.66 (US EPA)]: The adsorption coefficient of the test material has been estimated to be greater than log10 Koc 5.37 by QSAR calculation. Only a limit value could be achieved by this method as the original partition coefficient from which the value derived was a limit value itself. By computer estimation the adsorption coefficient of the test material was estimated to be in the range log10 Koc 2.63 to 7.70.
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