Registration Dossier
Registration Dossier
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EC number: 291-793-4 | CAS number: 90480-58-3
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
OCTANOIC ACID, ZINC SALT, BASIC:
Octanoic acid, zinc salt, basic is readily biodegradable and fatty acids degrade by the β-oxidation pathway. The environmental fate and distribution of the dissociation products of this substance in water are better assessed according to the dissociation products in water as follows:
(i) the mechanisms for partitioning of Zn2+ in environmental media, including the adsorption and/or absorption by organic matter and living cells, are understood to be different from those traditionally attributed to carbon-based substances. For the transport and distribution of zinc over the different environmental compartments, please see the hazard assessment of "Zinc" within the framework of Regulation (EC) No 1907/2006 as described in the respective assessment entity for "Zinc".
(ii) QSAR estimates indicate an affinity of fatty acids to solid phases. A Koc values of 69.63 L/kg for octanoic acid was estimated based on QSAR using EPISuite (V.4.00 - 4 .11) and log Kow of 3.05. However, fatty acids are readily biodegradable by sludge microorganisms and also by soil/sediment microorganisms and thus expected to get readily biodegraded while adsorped and not to accumulate.
Key value for chemical safety assessment
Additional information
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