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EC number: 208-237-3 | CAS number: 517-28-2
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:
- 2 017
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Haematoxylin
- EC Number:
- 208-237-3
- EC Name:
- Haematoxylin
- Cas Number:
- 517-28-2
- Molecular formula:
- C16H14O6
- IUPAC Name:
- haematoxylin
Constituent 1
Study design
- Oxygen conditions:
- anaerobic
- Inoculum or test system:
- sewage, domestic, non-adapted
- Details on inoculum:
- Sewage sampled one day before D0, washed with chlorinated water and maintained with aeration.
Final concentration of 30 mg/L in assay volume. - Duration of test (contact time):
- ca. 28 d
Initial test substance concentration
- Initial conc.:
- ca. 0.104 g/L
- Based on:
- test mat.
Parameter followed for biodegradation estimationopen allclose all
- Parameter followed for biodegradation estimation:
- DOC removal
- Parameter followed for biodegradation estimation:
- TOC removal
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- >= 10 - <= 20
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The sample did not reach the 60% degradation treshold within 28 days and therefore has to be considered as "not readily biodegradable" according to OECD criteria.
- Executive summary:
The sample did not reach the 60% degradation treshold within 28 days and therefore has to be considered as "not readily biodegradable" according to OECD criteria.
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