Registration Dossier
Registration Dossier
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EC number: 700-636-5 | CAS number: 5413-49-0
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Koc = 22, Log Koc= 1.35 at neutral pH
Key value for chemical safety assessment
- Koc at 20 °C:
- 22
Additional information
The adsorption coefficient of the substance was evaluated according to the OECD Guideline 121 and EU Method C.19. The HPLC method used enables the relationship between the retention time on the column and the Koc on organic matter to be established. Solutions of reference substances with known log Koc values based on soil adsorption data and the test substance were analysed. The capacity factor (k') of each compound was calculated from its retention time. The log k’ values of the references substances were plotted against the known log Koc values. A linear regression program was used to calculate the calibration curve. Linear regression analysis was performed using the least squares method. The coefficient of correlation (r) was calculated. The log Koc value for the test substance was calculated by substituting its mean log k’ in the calibration curve.
Koc = 22, at neutral pH
Log Koc= 1.35 at neutral pH
[LogKoc: 1.35]
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