Registration Dossier
Registration Dossier
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EC number: 939-538-4 | CAS number: 1471313-87-7
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:
- 2005-07-22 - 2005-08-24
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- Inokulum for municipal STP Taunusstein-Bleidenstadt, washed twice with mineral nutirent
- Duration of test (contact time):
- 28 d
- Initial conc.:
- 88 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- Temperature maintained between 20.0-21.7 deg C (mena 20.8 deg C)
- Reference substance:
- benzoic acid, sodium salt
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 83
- Sampling time:
- 28 d
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 61
- Sampling time:
- 12 d
- Details on results:
- 10 d Window was met
- Results with reference substance:
- Sodium benzoate was degraded 95% after 28d, the 10d window was met after 5d
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The registration substance was tested in an OECD 301B CO2 Evolution test and was found to be readily biodegradable within the 10d window.
- Executive summary:
The registration substance is readily biodegradable in an OECD 301B CO2 Evolution test fulfilling the 10d window. CO2 evolution was 83% after 28d and has reached the pass level of 60% CO2 formation after 12d already.
Reference
Description of key information
BIODEGRADATION IN WATER: SCREENING TEST
The registration substance is readily biodegradable in an OECD 301B CO2 Evolution test fulfilling the 10d window. CO2 evolution was 83% after 28d and has reached the pass level of 60% CO2 formation after 12d already.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
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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