Registration Dossier
Registration Dossier
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EC number: 604-453-0 | CAS number: 145022-45-3
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Not readily biodegradable according to OECD criteria.
Key value for chemical safety assessment
Additional information
No data on the biodegradation potential of the test substance itself are currently available. However, a ready biodegradation study on 3-ethyl-1-methyl.1H-imidazolium (EMIM) acetate (CAS 143314-17-4) according to OECD 301B is available (BASF AG 22G0363/06G008, 2010). While the acetate part of the molecule was found to be fully biodegradable, the EMIM part is considered to be persistent.
The anion of the test substance (methane sulfonic acid, CAS 75-75-2) contains only one C-atom and was found to be readily biodegradable in a GLP guideline study according to OECD 301A (BASF AG 99/0459/21/1, 1999). Due to its structural similarities to CAS 75-75-2 the methanesulfonate part of the molecule is also considered to be readily biodegradable.
Based on these data it is likely that the test substance is only partly biodegradable. Hence, the test substance is not considered to be readily biodegradable due to its persistent EMIM part.
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