Registration Dossier
Registration Dossier
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EC number: 273-535-2 | CAS number: 68988-63-6
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 03 December 2020 - 07 January 2021
- Reliability:
- 1 (reliable without restriction)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- GLP compliance:
- yes
- Inoculum or test system:
- activated sludge, non-adapted
- Details on inoculum:
- Activated sludge from a biologic sewage treatment plant was used as inoculum. The chosen sewage treatment plant treats mostly domestic sewage.
- Duration of test (contact time):
- 28 d
- Initial conc.:
- 1 770.4 mg/L
- Based on:
- TOC
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Reference substance:
- aniline
- Key result
- Parameter:
- % degradation (inorg. C analysis)
- Value:
- 27
- St. dev.:
- 9.5
- Sampling time:
- 28 d
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- inherently biodegradable
- Conclusions:
- The test item ColaTeric CNA-40 was tested using a concentration of nominally 20 mg organic carbon/L ColaTeric CNA-40 in test medium following OECD 301B and EU-Method C.4-C.
Because the test item is a UVCB, the 10-day window does not have to be taken in to account. Degradation at the end of the test was 27%. As degradation missed the pass level of 60% in the course of the test, ColaTeric CNA-40 is considered as not readily biodegradable within 28 days.
Reference
Description of key information
The test item ColaTeric CNA-40 was tested using a concentration of nominally 20 mg organic carbon/L ColaTeric CNA-40 in test medium following OECD 301B and EU-Method C.4-C.
Because the test item is a UVCB, the 10-day window does not have to be taken in to account. Degradation at the end of the test was 27%. As degradation missed the pass level of 60% in the course of the test, ColaTeric CNA-40 is considered as not readily biodegradable within 28 days.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable
- Type of water:
- freshwater
Additional information
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