Registration Dossier
Registration Dossier
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EC number: 436-000-6 | CAS number: 159010-67-0
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:
- From February 19th to March 22nd, 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 001
- Report date:
- 2001
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Version / remarks:
- 1992
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Blue REg 6080
- IUPAC Name:
- Blue REg 6080
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Duration of test (contact time):
- 28 d
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- other: % biodegradation: 100 × BOD / ThODNH4
- Value:
- 2.5
- Sampling time:
- 28 d
- Details on results:
- Points of degradation plot (test substance) based on ThOD_NH4:
4 % degradation after 7 d
4 % degradation after 14 d
2.5 % degradation after 21 d
2.5 % degradation after 27 d
2.5 % degradation after 28 d
BOD5 / COD results
BOD5 / CODopen allclose all
- Parameter:
- ThOD
- Value:
- 0.12 g O2/g test mat.
- Remarks on result:
- other: without nitrification
- Parameter:
- ThOD
- Value:
- 0.182 g O2/g test mat.
- Remarks on result:
- other: with nitrification
- Results with reference substance:
- Points of degradation plot (reference substance):
78.5 % degradation after 7 d
82.5 % degradation after 14 d
83 % degradation after 21 d
82 % degradation after 27 d
82 % degradation after 28 d
Any other information on results incl. tables
Biodegradation of reference item was 83 % day 14, thus confirming the suitability of activated sludge. At the end of the test on day 28, degradation was 82 %.
Test item has no inhibitory effects on activated sludge microorganisms, as biodegradation rate in toxicity control was > 25 % within 14 days.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- Test item was found to be not biodegradable under test conditions within 28 days.
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