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EC number: - | CAS number: -
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:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Reaction mass of Trihydrogen [29H,31H-phthalocyaninetrisulphonato(5-)-N29,N30,N31,N32]cobaltate(3-) and [29H,31H-phthalocyaninato-N29,N30,N31,N32]cobalt and dihydrogen [29H,31H-phthalocyaninedisulphonato(4-)-N29,N30,N31,N32]cobaltate(2-) and hydrogen [29H,31H-phthalocyaninesulphonato(3-)-N29,N30,N31,N32]cobaltate(1-)
- Molecular formula:
- C32H16N8Co(SO3)n with n=0 to 3
- IUPAC Name:
- Reaction mass of Trihydrogen [29H,31H-phthalocyaninetrisulphonato(5-)-N29,N30,N31,N32]cobaltate(3-) and [29H,31H-phthalocyaninato-N29,N30,N31,N32]cobalt and dihydrogen [29H,31H-phthalocyaninedisulphonato(4-)-N29,N30,N31,N32]cobaltate(2-) and hydrogen [29H,31H-phthalocyaninesulphonato(3-)-N29,N30,N31,N32]cobaltate(1-)
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- Aerobic activated sludge, microorganisms from a domestic waste water treatment plant was supplied by the sewage treatment plant Rossdorf, Germany.
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 100 mg/L
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
- Remarks:
- ThODNH4 and ThODNO3
Reference substance
- Reference substance:
- other: sodium benzoate
Results and discussion
% Degradation
- Key result
- Parameter:
- % degradation (O2 consumption)
- Remarks:
- ThODNH4 and ThODNO3
- Value:
- 0
- Sampling time:
- 28 d
- Details on results:
- The test item was not inhibitory to the aerobic activated sludge microorganisms as degradation in the toxicity controlwas >25% within 14 days.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Remarks:
- The reference item sodium benzoate was sufficiently degraded to 78% after 14 days and 81% after 28 days.
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- Based on 0% degradation observed over 28 days, the test item is not readily biodegradable.
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