Registration Dossier
Registration Dossier
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EC number: 875-892-5 | CAS number: 1375799-59-9
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:
- key study
- Study period:
- 2021-07-27 to 2021-10-14
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Analytical monitoring:
- yes
- Details on sampling:
- Sampling schedule: Control at 72h, Test concentrations at 0.88 mg/l, 9.4 mg/l and 100 mg/l at 0 hours and 72 hours.
- Vehicle:
- no
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
- Details on test organisms:
- Strain No. 86.81 SAG
- Test type:
- semi-static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 72 h
- Hardness:
- 22.5 mg/l CaCO3
- Test temperature:
- 21-24 °C
- pH:
- 8.2
- Nominal and measured concentrations:
- 0.88, 1.9, 4.3, 9.4, 21, 45 und 100 mg/l
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 153 mg/L
- Nominal / measured:
- meas. (initial)
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Validity criteria fulfilled:
- yes
- Conclusions:
- The EC50 value based on growth rate was determined to be 27 mg/l based on measured concentrations.
- Executive summary:
The EC50 value based on growth rate was determined to be 27 mg/l based on measured concentrations.
Reference
Description of key information
The EC50 value based on growth rate was determined to be 27 mg/l based on measured concentrations.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 27 mg/L
Additional information
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.
