Registration Dossier
Registration Dossier
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EC number: 208-237-3 | CAS number: 517-28-2
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:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Guideline 221 (Lemna sp. Growth Inhibition Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Haematoxylin
- EC Number:
- 208-237-3
- EC Name:
- Haematoxylin
- Cas Number:
- 517-28-2
- Molecular formula:
- C16H14O6
- IUPAC Name:
- haematoxylin
Constituent 1
- Specific details on test material used for the study:
- Hematoxylin / purity of 95 %
Test organisms
- Details on test organisms:
- Strain: Lemna minor
Study design
- Water media type:
- freshwater
- Total exposure duration:
- 7 d
Test conditions
- Test temperature:
- 23°C +/- 2°C
- pH:
- stabilised
Results and discussion
Effect concentrations
- Duration:
- 7 d
- Dose descriptor:
- IC50
- Effect conc.:
- >= 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- cell number
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- Concentration causing 50% inhibition of organisms growth (number) after 7 days: > 100 mg/L
Concentration causing 50% inhibition of organisms growth (surface) after 7 days: >= 100 mg/L
No Observed Effect Concentration (NOEC): < 100 mg/L
Inhibition of organisms growth (number) at 100 mg/L: <10%
Inhibition of organisms growth (surface) at 100 mg/L: <10% - Executive summary:
Concentration causing 50% inhibition of organisms growth (number) after 7 days: > 100 mg/L
Concentration causing 50% inhibition of organisms growth (surface) after 7 days: >= 100 mg/L
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