Registration Dossier
Registration Dossier
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EC number: 202-869-3 | CAS number: 100-60-7
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
According to OECD criteria the product is not readily biodegradable but inherently biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable, not fulfilling specific criteria
Additional information
The biodegradation potential of the substance in water was determined in a screening study equivalent or similar to OECD TG 302B (Zahn-WellensTest) (BASF, 1983). In this study ca. 582 mg/L test substance (equivalent to 400 mg/L DOC) was inoculated with 8 g/L (dry matter) non-adapted activated sludge from a BASF sewage treatment plant for 12 days under aerobic conditions. During the incubation period degradation was followed by determining DOC removal. After ca. 9.5 days inoculation 70% degradation was recorded. Biodegradation was complete after 12 days. A typical S-curve of degradation was observed which is indicative of biological degradation. Based on these findings, the test substance is classified as 'inherently biodegradable, not fulfilling specific criteria'.
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