Registration Dossier
Registration Dossier
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EC number: 210-415-0 | CAS number: 615-20-3
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- other information
- Study period:
- 1990
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 990
- Report date:
- 1990
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 E (Ready biodegradability: Modified OECD Screening Test)
- Deviations:
- no
- Principles of method if other than guideline:
- Test was performed according to Directive 79/831/EEC, Annex V; OECD TG 301 E (Modified OECD Screening Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- 2-chlorobenzothiazole
- EC Number:
- 210-415-0
- EC Name:
- 2-chlorobenzothiazole
- Cas Number:
- 615-20-3
- Molecular formula:
- C7H4ClNS
- IUPAC Name:
- 2-chloro-1,3-benzothiazole
- Details on test material:
- purity: 99.4 % w/w
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Details on inoculum:
- Inoculum concentration: 0.5 ml domestic activated sludge/ 900 ml water; filtered
- Duration of test (contact time):
- 28 d
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (DOC removal)
- Value:
- 0
- Sampling time:
- 0 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 27
- Sampling time:
- 7 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 7
- Sampling time:
- 14 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 7
- Sampling time:
- 21 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 20
- Sampling time:
- 28 d
BOD5 / COD results
- Results with reference substance:
- readily biodegradable: 100 % w/w degradation after 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- The substance is not readily biodegradable
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