Registration Dossier
Registration Dossier
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EC number: 401-990-0 | CAS number: 106990-43-6 CHIMASSORB 119; LOWILITE 19
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:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Body responsible for the test
Data source
Reference
- Reference Type:
- other: Body responsible for the test
- Title:
- Unnamed
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method C.3 (Algal Inhibition test)
- Deviations:
- not specified
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- Deviations:
- not specified
- Principles of method if other than guideline:
- - European Economic Community(ECC), ECC Directive 92/69, Part C: Methods for the determination of ecotoxicity, Publication No. L383, C-3: "Algal Inhibition Test" adopted December, 1992
- Organization for Economic Co-operation and Development(OECD), OECD guideline for Testing of Chemicals, guideline No.201:"Algae, Growth Inhibition Test", Adopted June 7, 1984.
-ISO International Standard 8692, First edition, 15 November 1989 - GLP compliance:
- yes
Test material
- Reference substance name:
- Body responsible for the test
- IUPAC Name:
- Body responsible for the test
Constituent 1
Sampling and analysis
- Analytical monitoring:
- not specified
Test solutions
- Vehicle:
- not specified
Test organisms
- Test organisms (species):
- Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)
Study design
- Test type:
- not specified
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 72 h
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- ca. 1.2 mg/L
- Basis for effect:
- biomass
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- ca. 6.5 mg/L
- Basis for effect:
- growth rate
Any other information on results incl. tables
Under the conditions of the present study with Selenastrum capricornutum, the substance affected growth of this fresh water algae species significantly at WAFs prepared at 10 mg/L and higher, corrsponding with measured concentrations >= 0.416 mg/L.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Conclusions:
- EC50=1.2 mg/L (72h; basis for effect: biomass)
EC50=6.5 mg/L (72h; basis for effect: growth rate)
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