Registration Dossier
Registration Dossier
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EC number: 932-728-8 | 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:
- comparable to guideline study
Data source
Reference
- Reference Type:
- publication
- Title:
- A method to classify biodegradabilities of organic compounds.
- Author:
- Urano, K.; Kato, Z.
- Year:
- 1 986
- Bibliographic source:
- J. Hazard. Mat., 13, 135-145
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- Principles of method if other than guideline:
- Read-across to preceding entry:
Source test material: Phenol
Reference: Urano et al. 1986, biodegradation - GLP compliance:
- not specified
Test material
- Reference substance name:
- Phenol
- EC Number:
- 203-632-7
- EC Name:
- Phenol
- Cas Number:
- 108-95-2
- Molecular formula:
- C6H6O
- IUPAC Name:
- phenol
Constituent 1
Study design
- Inoculum or test system:
- activated sludge, non-adapted
- Details on inoculum:
- Jap. procedure of cultivation: semi-continously cultured by the MITI method using synthetic "sewage" of the following compostion: Glucose 25 g/L; Peptone 25 g/L; corn steep liquor 16 mL/L; KH2PO4 25 g/L; NaOH 16 g/L, Temperature 20°C.
- Duration of test (contact time):
- 10 d
Initial test substance concentration
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Results and discussion
% Degradationopen allclose all
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 95
- Sampling time:
- 8 d
- Remarks on result:
- other: initial concentration: 100 mg/L
- Parameter:
- % degradation (O2 consumption)
- Value:
- 62
- Sampling time:
- 4 d
- Remarks on result:
- other: initial concentration: 100 mg/L
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
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