Registration Dossier
Registration Dossier
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EC number: 424-380-6 | CAS number: 43057-68-7
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:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Meets the criteria for classification as Reliable without restriction according to Klimisch et al (1997)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 997
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Annex V, C3 and OECD No. 201
- GLP compliance:
- yes
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
Test organisms
- Test organisms (species):
- other: Selenastrum capricornutum (CCAP 278
Study design
- Limit test:
- no
- Total exposure duration:
- 72 h
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 0.076 mg/L
- Basis for effect:
- biomass
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 0.02 mg/L
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 0.022 mg/L
- Basis for effect:
- growth rate
- Details on results:
- %Concentration loss over test: ... 99.7
Any other information on results incl. tables
All results are expressed on geometric mean measured
concentrations which ranged from 10-48% of nominal in this
study.
Measured concentrations ranged from 84-121% of nominal at 0
hours and 0-1% of nominal at 72 hours.Comparison of the measured concentrations of the test
substance from medium samples at a concentrations equivalent to the highest test concentration, but without the addition
of algal cells, indicated that the presence of algal cells had not affected the stability of the exposure solutions.
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
