Registration Dossier
Registration Dossier
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EC number: 202-603-6 | CAS number: 97-72-3
Endpoint summary
Administrative data
Description of key information
Additional information
Hydrolysis studies show that isobutyric anhydride added to water rapidly converts to isobutyric acid. Thererfore, isobutyric acid data is being used by read across for all environmental fate and ecotox endpoints.
Adsorption/Desorption
In accordance with column 2 of REACH Annex IX Nr 9.3.3, the study does not need to be conducted as the substance has a low potential for adsorption (log Kow < 3, see Sect. 4.7) and is readily biodegradable (see Sect. 5.2.1).
Based on a calculated log Koc of 1.65 (Koc = 44.7) for the charged molecule, isobutyric acid is expected to have a high mobility in soil (OXEA, 2010).
The results of Hemphill (1962) are not suited to assess the adsorption of isobutyric acid to soils (sorbents are pure clays).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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