Registration Dossier
Registration Dossier
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EC number: 204-638-2 | CAS number: 123-62-6
Endpoint summary
Administrative data
Description of key information
Additional information
Stability
Due to its chemical structure and reactivity, propionic anhydride will rapidly hydrolyze in contact with water to propionic acid. Therefore, propionic acid data is being used by read across for many of the environmental fate and ecotox endpoints.
Biodegradation
Propionic anhydride rapidly and completely forms propionic acid in contact with water. Therefore biodegradation data for propionic acid is provided. Based upon a weight of evidence propionic acid is considered to be readily biodegradable.
Biodegradation in water and sediment: simulation test
In accordance with column 2 of REACH Annex IX Nr. 9.2, the study does not need to be conducted as the substance (propionic acid) is readily biodegradable.
Biodegradation in soil
In accordance with column 2 of REACH Annex IX Nr. 9.2, the study does not need to be conducted as the substance (propionic acid) is readily biodegradable.
Bioaccumulation
In accordance with column 2 of Annex IX, the study does not need to be conducted if the substance has a low potential for bioaccumulation. The log Kow of 0.33 for propionic acid indicates a low potential for bioaccumulation. Therefore and for reasons of animal welfare a fish study is not proposed.
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) and is readily biodegradable.
However, based upon data for propionic acid, the log Koc is low in the range of environmentally relevant pH indicating the potential for high mobility in soil.
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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