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Description of key information

Reaction mass of cerium dioxide and lanthanum oxide and lanthanum fluoride does not show any self-ignition up to 500°C.
Data on constituents:
CeO2: No self-ignition up to at least 400°C,
La2O3: No self-ignition up to at least 400°C,
LaF3: No experimental data, but should not show any potential for self-ignition based on expert statement.

Key value for chemical safety assessment

Additional information

A GLP-compliant study of reliability 1 according to Klimisch was available on the reaction mass (Demangel, 2010) and revealed the absence of self-ignition up to 500°C. It was flagged as a key study.

A similar conclusion was drawn from experimental data of reliability 2 (Cerutti, 2005a, b) on cerium dioxide and lanthanum oxide. For lanthanum fluoride, an expert statement was provided showing this substance should not show any potential for self-ignition.

All these data on the three constituents were thus selected as supporting studies.