Registration Dossier
Registration Dossier
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EC number: 451-520-3 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Adequacy of study:
- other information
Data source
Reference
- Reference Type:
- other: Body responsible for the test
- Title:
- Unnamed
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Principles of method if other than guideline:
- European Economic Community (EEC), EEC 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. - GLP compliance:
- yes
Test solutions
- Details on test solutions:
- Identity and concentration of auxiliary solvent for dispersal: Preparation of test solutions started with a stock solution
of 100 mg/l applying 30 minutes of magnetic stirring. For
the range-finding test the resulting dispersion was filtered
through a paper filter Schleicher and Schuell 604, (ca. 5
um). For both the limit test and the final test the
resulting dispersions were filtered through a glass fibre
pre-filter (Schleicher and Schuell GF 92) to remove the
larger undissolved test substance particles and subsequently
through a membrane filter (Schleicher and Schuell RC55,
0.45um). The lower test concentrations for the range-finding
test and the final test were prepared by subsequent
dilutions of the filtrate in test medium. The final test
solutions were all clear and colourless.
Test organisms
- Test organisms (species):
- other: Selenastrum capricornutum, strain: NIVA CHL1
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.:
- ca. 0.57 mg/L
- Basis for effect:
- biomass
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 0.73 mg/L
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 0.34 mg/L
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 0.15 mg/L
- Basis for effect:
- biomass
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.
