Registration Dossier
Registration Dossier
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EC number: 614-626-2 | CAS number: 685853-81-0
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Test organisms (species):
- Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)
- Duration:
- 96 h
- Dose descriptor:
- EC50
- Effect conc.:
- 0.4 mg/L
- Conc. based on:
- element
- Remarks:
- chromium
- Basis for effect:
- growth rate
- Validity criteria fulfilled:
- not specified
- Executive summary:
The toxicity of chromium(III) to Selenastrum capricornatum was studied and the results calculated from initial measured concentrations. The algistatic concentration was >1000 µg/l and the concentration that caused a 50% reduction in growth was 397 µg/l.
Reference
Description of key information
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 1.4 mg/L
Additional information
Based on Cr3+ EC50 0.3 mg/l (ca 1.5 mg/l as citrate)
Classification proposed as Aquatic Chronic 3
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