Registration Dossier
Registration Dossier
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EC number: 440-870-2 | CAS number: 1013-88-3
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: guideline study
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)
- GLP compliance:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 440-870-2
- EC Name:
- -
- Cas Number:
- 1013-88-3
- Molecular formula:
- C13 H11 N
- IUPAC Name:
- C,C-Diphenylmethyleneimine
Constituent 1
- Specific details on test material used for the study:
- Benzophenonimin hydrolyses rapidly. Hydrolysis products are Benzophenon (CAS 119 -61-9) and Ammonia (CAS 7664-41-7). The results were related to the water soluble part of Benzophenon.
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Duration of test (contact time):
- 12 d
Initial test substance concentration
- Initial conc.:
- 18 mg/L
- Based on:
- DOC
- Remarks:
- based on water soluble part of the hydrolysis products
Results and discussion
% Degradation
- Parameter:
- other: the non-soluble part of the hydrolysate (benzophenone) is easily eliminated from water by mechanical removal while the soluble part is readily biodegradable.
- Value:
- >= 90 - <= 100
- Sampling time:
- 12 d
- Remarks on result:
- other: the non-soluble part of the hydrolysate (benzophenone) is easily eliminated from water by mechanical removal while the soluble part is readily biodegradable.
- Details on results:
- Benzophenonimin is unstable in water.
- the water-solved part of the hydrolysate is readily
biodegradable
- the non-soluble part of the hydrolysate (benzophenone) is
easily eliminated from water by mechanical removal
Kinetic of test substance (in %):
= 0 after 1 day(s)
= 16 after 3 day(s)
= 60 after 7 day(s)
= 99 after 11 day(s)
= 99 after 12 day(s)
Any other information on results incl. tables
Benzophenonimin is unstable in water, therefore the water-solved part of the hydrolysate was tested
Applicant's summary and conclusion
- Interpretation of results:
- other: the water soluble part of the hydrolysate is readily biodegradable
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