Registration Dossier
Registration Dossier
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EC number: 909-709-8 | CAS number: -
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no hazard identified
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
As an inorganic substance, the reaction mass of cerium dioxide and zirconium dioxide is not biodegradable. The reaction mass of cerium dioxide and zirconium dioxide does not show a potential for bioaccumulation. Short-term toxicity tests performed with a representative nanoform of the reaction mass on species belonging to three trophic levels (i.e. fish, daphnids, algae) did not reveal any relevant toxicity. Furthermore, based on the observations made in short-term and/or long-term studies performed with micrometric and/or nanometric cerium dioxide, as well as observations made in available tests with (micrometric) zirconium dioxide and/or related zirconium substances, it can be concluded that there is no immediate concern for micro- or nanometric reaction mass materials to cause environmentally relevant short- or long-term effects in the aquatic environment. As a result, the reaction mass of cerium dioxide and zirconium dioxide will not be classified for environmental hazards under the CLP Regulation.
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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