Registration Dossier
Registration Dossier
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EC number: 428-410-9 | CAS number: 67014-36-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- other: not verifiable
- Rationale for reliability incl. deficiencies:
- other: no information given in the SNIF-file
Data source
Reference
- Reference Type:
- other: Body responsible for the test
- Title:
- Unnamed
- Year:
- 1 998
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: 92/69/EWG, C.3; OECD 201 (1989)
- GLP compliance:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 428-410-9
- EC Name:
- -
- Cas Number:
- 67014-36-2
- Molecular formula:
- C8H9N3O
- IUPAC Name:
- 5-amino-6-methyl-2,3-dihydro-1H-1,3-benzodiazol-2-one
Constituent 1
Test solutions
- Details on test solutions:
- Identity and concentration of auxiliary solvent for dispersal: Milli-Q water
Test organisms
- Test organisms (species):
- Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
Study design
- Limit test:
- no
- Total exposure duration:
- 72 h
Test conditions
- Hardness:
- 24 mg CaCO3/L
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 100 mg/L
- Basis for effect:
- biomass
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 100 mg/L
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 100 mg/L
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 199 mg/L
- Basis for effect:
- biomass
- Details on results:
- %Concentration loss over test: 0 ... 0
Applicant's summary and conclusion
- Conclusions:
- For the test item an EC50/72h value of >100 mg/l for both growth rate and biomass, a NOEC/72h value of 100 mg/l for both growth rate and biomass respectively were determined.
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