Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 953-470-2 | 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
- Study period:
- Ongoing
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 022
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- Version / remarks:
- Version: 2011.
Remark: Standard OECD TG 201 but implementing recommendations of OECD Series on Testing and Assessment No. 317: "Guidance document on aquatic and sediment toxicological testing of nanomaterials".
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Series on Testing and Assessment No. 317: "Guidance document on aquatic and sediment toxicological testing of nanomaterials
- Version / remarks:
- Version: 2021.
Remark: The recommendations of this guidance were implemented when applying the standard OECD 201 test guideline.
- GLP compliance:
- yes
Test material
- Reference substance name:
- Cerium gadolinium oxide
- EC Number:
- 953-470-2
- Molecular formula:
- Gd2CeO5
- IUPAC Name:
- Cerium gadolinium oxide
- Test material form:
- solid: nanoform
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
Test solutions
- Vehicle:
- no
- Details on test solutions:
- The preparation of the stock suspension is based on the recommendations of OECD Series on Testing and Assessment No. 317: "Guidance document on aquatic and sediment toxicological testing of nanomaterials" and on preliminary assays to determine relevant sonication time/amplitude, and concentration.
Test organisms
- Test organisms (species):
- Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 72 h
Test conditions
- Details on test conditions:
- The test conditions will be further described when the study will be finished and the study report will become available (see in the field "Overall remarks, attachments" for further information).
Results and discussion
Effect concentrations
- Key result
- Remarks on result:
- other: Results not yet available; see in the field "Overall remarks, attachments" for further information.
Applicant's summary and conclusion
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.
