Registration Dossier
Registration Dossier
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EC number: 203-532-3 | CAS number: 107-92-6
Bioaccumulation: aquatic / sediment
Administrative data
Link to relevant study record(s)
Description of key information
log BCF = 0.5 (estimated based on an experimental log Pow of 1.1) (ECT, 2010)
Key value for chemical safety assessment
- BCF (aquatic species):
- 0.5 dimensionless
Additional information
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 1.1 for butyric acid (OXEA, 2009) indicates a low potential for bioaccumulation. In addition the substance is readily biodegradable (Hüls, 1996). Therefore and for reasons of animal welfare a fish study is not performed.
The log BCF of butyric acid was estimated to be 0.5 (BCF = 3.162) using the program BCFBAF v3.00 (Part of US EPA EPI Suite v4.00). In addition, a log BAF (upper trophic) of 0.31 (BAF = 2.06) was calculated using the method of Arnot-Gobas (ECT, 2010). The low BCF/BAF values indicate a low potential of butyric acid for bioaccumulation in aquatic organisms.
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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