Registration Dossier
Registration Dossier
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EC number: 942-697-2 | CAS number: -
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The test item is the substance in water at 30g/l
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 991
- Report date:
- 1991
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
- GLP compliance:
- no
Test material
- Reference substance name:
- Reaction mass of 1,3'-Bipyridinium, 1'-[3-(dimethylamino)propyl]-6'-hydroxy-4'-methyl-2'-oxo-, inner salt and 1,3'-Bipyridinium, 1'-[3-(dimethylamino)propyl]-1',6'-dihydro-2'-hydroxy-4'-methyl-6'-oxo-, chloride (1:1)
- Molecular formula:
- not applicable (reaction mass)
- IUPAC Name:
- Reaction mass of 1,3'-Bipyridinium, 1'-[3-(dimethylamino)propyl]-6'-hydroxy-4'-methyl-2'-oxo-, inner salt and 1,3'-Bipyridinium, 1'-[3-(dimethylamino)propyl]-1',6'-dihydro-2'-hydroxy-4'-methyl-6'-oxo-, chloride (1:1)
- Test material form:
- other: concentrated solution
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, domestic (adaptation not specified)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 300 mg/L
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 17
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Interpretation of results:
- not inherently biodegradable
- Conclusions:
- HMDPY was slightly degraded by 17% after 28 days.
- Executive summary:
The test article was slightly degraded by 17% after 28 days (end of the study).
The standard compound, ANILINE, was degraded within 14 days by 96 %.
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