Registration Dossier
Registration Dossier
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EC number: 221-220-5 | CAS number: 3033-62-3
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Available inherent and ready biodegradation studies on the test substance indicate that the test substance is not inherently biodegradable (<10% in 28d, initial test substance concentration of 400 mg/L) and not readily biodegradable (2% in 28d, initial test substance concentration of 100 mg/L).
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
An inherent biodegradation study was conducted on the test substance according to OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test). The initial test substance concentration in this study was 400 mg/L (based on DOC). A degradation rate of <10% in 28d was determined and under the conditions of this study the test substance was considered to be not inherently biodegradable.
In a study conducted equivalent to OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test), an initial test substance concentration of 100 mg/L (based on ThOD/L) was assessed. Percent degradation of the test substance was reported to be 2% in 28 days based on oxygen consumption. The criteria for ready biodegradability were not reached for the test substance and thus it was not found to be readily biodegradable.
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