Registration Dossier
Registration Dossier
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EC number: 431-870-3 | CAS number: -
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:
- 10th Nov 1998 - 9th Dec 1998
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: Directive 92/69/EEC, Method C.4-C;OECD Guideline No. 301B
- GLP compliance:
- yes
- Inoculum or test system:
- activated sludge, non-adapted
- Reference substance:
- benzoic acid, sodium salt
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 39
- Sampling time:
- 28 d
- Details on results:
- Points of degradation plot (test substance):
3 % degradation after 1 d
5 % degradation after 2 d
4 % degradation after 3 d
6 % degradation after 6 d
10 % degradation after 8 d
13 % degradation after 10 d
30 % degradation after 14 d
28 % degradation after 16 d
28 % degradation after 20 d
25 % degradation after 22 d
27 % degradation after 24 d
35 % degradation after 27 d
39 % degradation after 28 d - Results with reference substance:
- Points of degradation plot (reference substance):
13 % degradation after 1 d
32 % degradation after 2 d
45 % degradation after 3 d
63 % degradation after 6 d
68 % degradation after 8 d
69 % degradation after 10 d
76 % degradation after 14 d
81 % degradation after 16 d
84 % degradation after 20 d
83 % degradation after 22 d
82 % degradation after 24 d
84 % degradation after 27 d
85 % degradation after 28 d - Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- The test material attained 39% degradation after 28 days and therefore cannot be considered to be readily biodegradable under the strict terms and conditions of OECD Guideline No 301B.
- Executive summary:
The test material attained 39% degradation after 28 days and therefore cannot be considered to be readily biodegradable under the strict terms and conditions of OECD Guideline No 301B.
Reference
Description of key information
The test material attained 39% degradation after 28 days and therefore cannot be considered to be readily biodegradable under the strict terms and conditions of OECD Guideline No 301B.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
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