Registration Dossier
Registration Dossier
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EC number: 205-533-4 | CAS number: 142-30-3
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: Study performed according to OECD guideline and in compliance with GLP criteria.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 996
- Report date:
- 1996
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-A (Determination of the "Ready" Biodegradability - Dissolved Organic Carbon (DOC) Die-Away Test)
- Qualifier:
- according to guideline
- Guideline:
- ISO 7827 (Evaluation in an Aqueous Medium of the "Ultimate" Aerobic Biodegradability of Organic Compounds - Method by Analysis of Dissolved Organic Carbon (DOC))
- GLP compliance:
- yes
Test material
- Reference substance name:
- 143-30-3
- IUPAC Name:
- 143-30-3
- Details on test material:
- - Name of test material (as cited in study report): 2,5-Dimethyl-3-hexin-2,5-diol
- Physical state: white solid
- Storage condition of test material: at room temperature
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- Activated sludge from in laboratory waste water treatment setting (operated with municipal and synthetic sewage sludge).
- Duration of test (contact time):
- 29 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 29.6 mg/L
- Based on:
- test mat.
- Initial conc.:
- 20 mg/L
- Based on:
- DOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Reference substance
- Reference substance:
- aniline
Results and discussion
- Test performance:
- - Degradation degree of the reference substance (% DOG): 96 after 5 days.
- Degradation degree in the inhibition control (% DOC): 45 after 14 days.
- Physico-chemnical (abiotic) elimination of the test substance (% DOC): <10 after 29 days.
- Elimination of the test substance by adsorption (% DOC): 0 after 7 days.
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- 0
- Sampling time:
- 29 d
Applicant's summary and conclusion
- Interpretation of results:
- under test conditions no biodegradation observed
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