Registration Dossier
Registration Dossier
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EC number: 909-709-8 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Environmental fate data available for the reaction mass of cerium dioxide and zirconium dioxide and its constituents are shown in the table below:
Endpoints |
Reaction mass |
Cerium dioxide |
Zirconium dioxide |
Hydrolysis |
Waived as abiotic degradation is irrelevant for inorganic substances assessed on an elemental basis. |
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Biodegradation |
Waived based on the inorganic nature of the substance. |
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Bioaccumulation |
No data |
Low potential for bioaccumulation (based on literature data investigating bioaccumulation of Ce - an elemental approach is followed) |
Low potential for bioaccumulation (based on literature data investigating bioaccumulation of Zr - an elemental approach is followed) |
Adsorption/desorption |
No data
|
Adsorption of cerium to soil appears to be mild, however a stronger adsorption of cerium to suspended matter and sediment seems to occur (based on literature data investigating adsorptive behaviour of Ce / Ce distribution between water and particulate matter in the field - an elemental approach is followed). |
Strong adsorption of zirconium to particulate matter is observed, whether soil, sediment or suspended matter (based on literature data investigating adsorptive behaviour of Zr / Zr distribution between water and particulate matter in the field - an elemental approach is followed). |
Based on the similar physicochemical properties (inorganic nature, low water solubility, etc.) of the reaction mass and its constituents, one can expect similar fate and behaviour in the environment for the three substances.
Additional information
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