Registration Dossier
Registration Dossier
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EC number: 209-520-4 | CAS number: 583-78-8
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: peer reviewed in HSDB 2009-08-20
Data source
Reference
- Reference Type:
- other: database
- Title:
- Chemical Risk Information Platform (CHRIP) Biodegradation and Bioconcentration. Tokyo, Japan: Natl Inst Tech Eval.
- Author:
- NITE
- Year:
- 2 009
- Bibliographic source:
- http://www.safe.nite.go.jp/english/db.html as of Feb. 10, 2009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 2,5-dichlorophenol
- EC Number:
- 209-520-4
- EC Name:
- 2,5-dichlorophenol
- Cas Number:
- 583-78-8
- Molecular formula:
- C6H4Cl2O
- IUPAC Name:
- 2,5-dichlorophenol
- Reference substance name:
- Phenol, 2,5-dichloro-
- IUPAC Name:
- Phenol, 2,5-dichloro-
- Test material form:
- not specified
- Details on test material:
- purity not reported
Constituent 1
Constituent 2
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, adapted
- Duration of test (contact time):
- ca. 28 d
Initial test substance concentration
- Initial conc.:
- ca. 100 mg/L
- Based on:
- test mat.
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (test mat. analysis)
- Remarks:
- HPLC
- Value:
- ca. 3
- Remarks on result:
- other: sampling time not reported, no details on single values and statistics were reported.
- Parameter:
- % degradation (TOC removal)
- Value:
- ca. 8
- Remarks on result:
- other: sampling time not reported, no details on single values and statistics were reported.
- Parameter:
- other: Th BOD
- Value:
- ca. 5
- Remarks on result:
- other: sampling time not reported, no details on single values and statistics were reported.
- Details on results:
- sampling time not reported, no details on single values and statistics were reported.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- inherently biodegradable, not fulfilling specific criteria
- Conclusions:
- A TOC-removal rate of 8% and a value 5% of the theoretical BOD in 28 days indicates a low inherent biodegradibility.
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