Registration Dossier
Registration Dossier
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EC number: 256-380-5 | CAS number: 49564-57-0
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1988
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: well performed study very similar to OECD guideline but without GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 988
- Report date:
- 1988
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 38412 part 25 (1984)
- Deviations:
- not specified
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
- Deviations:
- not specified
- GLP compliance:
- no
Test material
- Reference substance name:
- 4-amino-5-methoxy-N,2-dimethylbenzenesulphonamide
- EC Number:
- 256-380-5
- EC Name:
- 4-amino-5-methoxy-N,2-dimethylbenzenesulphonamide
- Cas Number:
- 49564-57-0
- Molecular formula:
- C9H14N2O3S
- IUPAC Name:
- 4-amino-5-methoxy-N,2-dimethylbenzene-1-sulfonamide
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, industrial (adaptation not specified)
- Details on inoculum:
- Mixture of activated sludge from the sewage treatment plant of
the Hoechst AG at Frankfurt am Main, Höchst with activated
sludge from the sewage treatment plant at Hoechst AG, site
Kelsterbach in a ratio of 1 to 2 - Duration of test (contact time):
- 31 d
Initial test substance concentration
- Initial conc.:
- 350.2 mg/L
- Based on:
- DOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Reference substance
- Reference substance:
- diethylene glycol
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- 0
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not inherently biodegradable
- Conclusions:
- Kresidinsulfmethylamid is not inherently biodegradable under the conditions of the Zahn-Wellens Test
- Executive summary:
Testing of Kresidinsulfmethylamid for inherent biodegradability was performed in the Zahn-Wellens test. The results of testing the biodegradability in the Zahn-Wellens Test revealed that Kresidinsulfmethylamid was not inherently biodegradable under the conditions of this test.
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