Registration Dossier
Registration Dossier
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EC number: 252-360-5 | CAS number: 35092-89-8
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1995
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: well performed study according to an acknowledged standard with GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 995
- Report date:
- 1995
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
- Deviations:
- not specified
- GLP compliance:
- yes
Test material
- Reference substance name:
- Methyl hydrogen 2-nitroterephthalate
- EC Number:
- 252-360-5
- EC Name:
- Methyl hydrogen 2-nitroterephthalate
- Cas Number:
- 35092-89-8
- Molecular formula:
- C9H7NO6
- IUPAC Name:
- 4-(methoxycarbonyl)-3-nitrobenzoic acid
- Details on test material:
- purity: 94 +- 0.5 %
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- domestic waste water treatment plant Frankfurt am main Sindlingen. Centrifuged sediment from the activated sludge was washed and suspended again.
- Duration of test (contact time):
- 28 d
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Reference substanceopen allclose all
- Reference substance:
- benzoic acid, sodium salt
- Reference substance:
- other:
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (DOC removal)
- Value:
- 0
- Sampling time:
- 1 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 13.5
- Sampling time:
- 7 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 14.9
- Sampling time:
- 11 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 17.3
- Sampling time:
- 21 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 20.3
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: not readily but slowly and partly biodegradable
- Conclusions:
- No readily but partly biodegradable
- Executive summary:
The substance was tested for ready biodegradability according to OECD 301 A. The rate of degradation was 20 - 50% determined by the DOC values.
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