Registration Dossier
Registration Dossier
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EC number: 909-701-4 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
Physico-chemical data available on reaction mass of cerium dioxide and lanthanum oxide and lanthanum fluoride and its constituents are synthetized in the table below:
Endpoints |
Reaction mass |
Cerium dioxide |
Lanthanum oxide |
Lanthanum fluoride |
Appearance/physical state/colour |
Off-white to white cream inorganic powder |
Not provided as it is a substance specific endpoint |
||
Melting point |
>500°C |
>400°C |
>400°C |
1427°C |
Boiling point |
Waived based on high melting point |
>400°C |
>400°C |
2327°C |
Relative density |
6.659 |
Not provided as it is a substance specific endpoint |
||
Granulometry |
D50 = 11.775 µm |
Not provided as it is a substance specific endpoint |
||
Vapour pressure |
Waived based on high melting point |
|||
Partition coefficient |
Waived based on inorganic nature |
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Water solubility |
2.23 µg/L |
< 0.123 µg/L |
69.6 µg/L |
2.35 to 2.96 mg/L |
Surface tension |
Waived based on low water solubility |
No data |
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Flash point |
Waived based on inorganic nature |
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Auto-flammability |
No self ignition up to 500°C |
No self ignition up to 500°C |
No self ignition up to 500°C |
No potential for self-ignition |
Flammability |
Not highly flammable |
Not highly flammable |
Not highly flammable |
No potential for flammability |
Explosive properties |
Non explosive |
Non explosive |
Non explosive |
No potential for explosiveness |
Oxidising properties |
No oxidising properties |
No oxidising properties |
No oxidising properties |
No potential for oxidising properties |
Stability in organic solvents |
Waived based on inorganic nature |
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Dissociation constant |
Waived as technically not feasible |
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Viscosity |
Waived based on solid state |
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These data clearly show that reaction mass and its constituents present highly similar physico-chemical properties. This is particularly true for cerium dioxide which is present in the highest quantities in the reaction mass, and for lanthanum oxide. Such an observation supports the relevance of potential read-across with constituents, and notably with cerium dioxide and lanthanum oxide, when data on reaction mass are not available.
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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