Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Environmental data available on reaction mass of cerium dioxide and lanthanum oxide and lanthanum fluoride and its constituents are synthetized in the table below:



Reaction mass

Cerium dioxide

Lanthanum oxide

Lanthanum fluoride


Waived based on low water solubility

No data


Waived based on inorganic nature


No data

Low potential for bioaccumulation

Low potential for bioaccumulation

Low potential for bioaccumulation


Waived as technically not feasible due to low water solubility

Koc = 5480283

Koc,des = 358213

Strong potential to adsorption to soil

No data


Based on the similar physico-chemical properties of the reaction mass and its constituents (i.e.inorganic nature, very low to low water solubility), one can expect similar fate and behaviour in the environment for the four substances.