Registration Dossier
Registration Dossier
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EC number: 403-590-1 | CAS number: 104815-18-1
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
- Koc at 20 °C:
- 10 000 000 000
Additional information
Using the predictive fragment constant methodology software, PCKOCWIN, version 1.66, © 2000 US Environmental Protection Agency, the adsorption coefficient of the test material has been estimated to be log10 Koc 11.2. However, the exact proposed structure for the test material could not be inputted due to the constraints of the predictive software. As a further demonstration of the anticipated high affinity of the test material for soil and sludges, and to assess the effect of possible dissociation in the environment, the calculation was repeated for a single proposed ligand molecule. This resulted in a log10 Koc estimate of 5.2. The remaining iron component and the ammonium counter ion are both naturally occurring components in soils and therefore the concept of adsorption coefficient was not considered relevant.
Other adsorption coefficient indicated as dimensionless:
- other: Anion: log Koc ,11.1556
- other: Ligand: log Koc ,5.2037
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