Registration Dossier
Registration Dossier
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EC number: 400-600-6 | CAS number: 71868-10-5 ACETOCURE 97; GENOCURE*PMP; IGM 4817; IRGACURE 907; SPEEDCURE 97
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:
- 1983
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Deviations:
- not specified
- GLP compliance:
- not specified
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- - Source of inoculum/activated sludge: Bacteria collected from activated sludge of the sewage treatment plant of CH-4310 Rheinfelden on 13/06/1983. The preparation of the inoculum was carried out according to the method described in the guideline.
- Duration of test (contact time):
- 28 d
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- - Test vessel: 2 L flasks equipped with gas inlet and magnetic stirrer.
- Test water: The test medium was prepared according to the method described in the guideline.
- Temperature: 22 ± 2°C
- Duration: 28 days
- Air: approx, 50 ml/min , free of carbondioxide. - Reference substance:
- aniline
- Parameter:
- % degradation (CO2 evolution)
- Value:
- <= 1
- Sampling time:
- 28 d
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- No degradation of the test material was observed under the conditions of the test.
Reference
Description of key information
The study provided was conducted to recognised testing guidelines and with GLP certification.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
The biodegradability of the test substance was investigated in a study according to GLP and OECD guideline 301 B. After 28 days a biodegradation rate < 1% was measured (Ciba-Geigy, 1983b).
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