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Registration Dossier
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EC number: 940-273-1 | 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
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
Data source
Reference
- Reference Type:
- publication
- Title:
- BUA-Stoffbericht 81 - Ameisensäure, Formiate
- Author:
- n.a.
- Year:
- 1 992
- Bibliographic source:
- Beratergremium für Altstoffe (BUA) der Gesellschaft Deutscher Chemiker, S.Hirzel Wissenschaftliche Verlagsgesellschaft
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- ISO 8692 (Water Quality - Fresh Water Algal Growth Inhibition Test with Scenedesmus subspicatus and Selenastrum capricornutum)
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Formic acid
- EC Number:
- 200-579-1
- EC Name:
- Formic acid
- Cas Number:
- 64-18-6
- Molecular formula:
- CH2O2
- IUPAC Name:
- formic acid
- Reference substance name:
- Water
- EC Number:
- 231-791-2
- EC Name:
- Water
- Cas Number:
- 7732-18-5
- Molecular formula:
- H2O
- IUPAC Name:
- Water
- Test material form:
- liquid
Constituent 1
Constituent 2
Test organisms
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Study design
- Test type:
- static
- Water media type:
- freshwater
- Total exposure duration:
- 96 h
Test conditions
- Reference substance (positive control):
- not specified
Results and discussion
Effect concentrationsopen allclose all
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- ca. 26.9 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Key result
- Duration:
- 96 h
- Dose descriptor:
- EC50
- Effect conc.:
- ca. 25 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
Applicant's summary and conclusion
- Conclusions:
- The EC50 of formic acid in freshwater algae (Desmodesmus subspicatus) after 96 h is 25 mg/l.
- Executive summary:
The EC50 of formic acid in freshwater algae (Desmodesmus subspicatus) after 96 h is 25 mg/l.
This value is taken from literature (BUA Stoffberticht No. 81).
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