Registration Dossier
Registration Dossier
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Endpoint summary
Administrative data
Description of key information
Additional information
Adsorption/desorption
The adsorption coefficient of the test material was investigated in accordance with the standardised guidelines OECD 121 and EU Method C.19 under GLP conditions using the HPLC estimation method.
Analysis was performed at pH 2 and 7. At pH 2, solutions of one reference material based on soil adsorption data and the test material were analysed. Based on the retention times of the compounds the Koc and log Koc values of the test material were determined.
At pH 7, solutions of reference materials with known log Koc values based on soil adsorption data and the test material were analysed. The capacity factor (k') of each compound was calculated from its retention time.
Under the conditions of this study, the Koc and log Koc of the test material were determined to be >430000 and >5.6, respectively, at pH 2. The Koc and log Koc of 73 % of the test material were determined to be 18 to 430000 and 2.0 to 5.4, respectively, at pH 7.
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