Registration Dossier
Registration Dossier
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EC number: 930-447-5 | CAS number: -
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
- Study period:
- April 2009
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study by a laboratory having a GLP certificate
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Certificate on november 27th 2007
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
Test organisms
- Test organisms (species):
- Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)
Study design
- Test type:
- static
- Water media type:
- saltwater
- Total exposure duration:
- 72 h
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Remarks:
- Pseudokirchneriella subcapitata
- Basis for effect:
- biomass
- Remarks:
- Cell growt
- Remarks on result:
- other: 95% CI
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 100
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Remarks:
- Pseudokirchneriella subcapitata
- Basis for effect:
- growth rate
- Remarks:
- Cell multiplication
- Remarks on result:
- other: 95% CI
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The study was performed in compliance with the following quality criteria:
. The biomass in the control cultures has increased exponentially by a factor higher than 16 within the 72-day
test period. This corresponds to a specific growth rate of 0.92 day e-1.
. The mean coefficient of variation for section-by-section specific growth rates (days 0-1, 1-2 and 2-3, for 72-
hour tests) in the control cultures did not exceed 35%. This criterion applies to the mean value of coefficients
of variation calculated for replicate control cultures.
. The coefficient of variation of average specific growth rates during the whole test period in replicate control
cultures did not exceed 7%.
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