Registration Dossier
Registration Dossier
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EC number: 947-819-8 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- 2004
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- Considering the structural similarities of the substances "Reaction mass of Copper,di-µ-iodotris[triphenylphosphine]di- and iodobis(triphenylphosphino)copper" and "Iodotris(triphenylphosphino)copper" and the almost identical physical and chemical properties, especially partition coefficients and water solubilites, it can be expected that these substances will show quite similar behaviour with respect to toxicity to aquatic algae and cyanobacteria, too.
- Reason / purpose for cross-reference:
- read-across source
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 201
- GLP compliance:
- yes (incl. QA statement)
- Analytical monitoring:
- no
- Vehicle:
- no
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
- Details on test organisms:
- TEST ORGANISM
- Common name: Desmodesmus subspicatus
- Source (laboratory, culture collection): ,,Collection of Alga", lnstitut tor Pflanzenphysiologie of Universität Gottingen
- Method of cultivation: stock culture on solid agar at 8 C - Test type:
- static
- Limit test:
- yes
- Total exposure duration:
- 72 h
- Test temperature:
- 23 ± 2 °C
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Basis for effect:
- biomass
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Basis for effect:
- biomass
- Validity criteria fulfilled:
- yes
- Conclusions:
- The EC50 and NOEC were determined to be >1.000 mg/l.
- Executive summary:
The EC50 and NOEC were determined to be >1.000 mg/l.
Reference
Description of key information
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 1 000 mg/L
Additional information
EC50 value is expected to be above the solubility limit.
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.
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