Registration Dossier
Registration Dossier
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EC number: 215-150-4 | CAS number: 1306-38-3
Categories
- Category name:
- Cerium dioxide bulk et nano assessment entities rationale
Justifications and discussions
- Category definition:
- bulk and nanoform of CeO2
- Category rationale:
- CATEGORY HYPOTHESIS
It is hypothesized that whatever the size, the surface area or the shape, the non-surface treated virtually insoluble forms of cerium dioxide will form aggregates/agglomerates and thus, will have similar distribution and similar behavior in living organisms. Therefore, it could be claimed that the source and the target substances will have qualitatively similar (eco)-toxicological properties.
Therefore, the missing toxicological data (listed below) on the target substances can be predicted from the available studies conducted with the source substances.
CATEGORY JUSTIFICATION
Please find attached the report for justification
APPLICABILITY DOMAIN OF THE CATEGORY
The category applies to non-coated nano- and bulk forms of cerium oxide with various sizes, specific surface area and shapes, in the limit of those described in this dossier.
The scientific assessment is based on the scenario 6 proposed in the RAAF document:Scenario 6 covers the category approach for which the read-across hypothesis is based on different compounds with qualitatively similar properties
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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