Registration Dossier
Registration Dossier
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EC number: 202-396-2 | CAS number: 95-16-9
Toxicity to microorganisms
Administrative data
- Endpoint:
- activated sludge respiration inhibition testing
- 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. Basic data given.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 990
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- ISO 8192 (Water quality - Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation)
- Version / remarks:
- (1986)
- GLP compliance:
- no
Test material
- Reference substance name:
- Benzothiazole
- EC Number:
- 202-396-2
- EC Name:
- Benzothiazole
- Cas Number:
- 95-16-9
- Molecular formula:
- C7H5NS
- IUPAC Name:
- benzothiazole
- Details on test material:
- - Name of test material (as cited in study report): Benzothiazol
- Analytical purity: no data
Constituent 1
Sampling and analysis
- Analytical monitoring:
- no
Test solutions
- Vehicle:
- not specified
Test organisms
- Test organisms (species):
- activated sludge
Study design
- Test type:
- not specified
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 3 h
Test conditions
- Nominal and measured concentrations:
- nominal: 100, 180, 320, 560 and 1000 mg/l
- Details on test conditions:
- nutrient solution according to ISO 8192-1986 (chapter 4.2)
- Reference substance (positive control):
- yes
- Remarks:
- 3,5-dichlorophenol
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 3 h
- Dose descriptor:
- EC10
- Effect conc.:
- 274 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- inhibition of total respiration
- Remarks:
- respiration rate
- Duration:
- 3 h
- Dose descriptor:
- EC50
- Effect conc.:
- 635 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- inhibition of total respiration
- Remarks:
- respiration rate
Applicant's summary and conclusion
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