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Auto flammability

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Description of key information

The self-ignition temperature of reaction mass of dicerium trisulphide and dilanthanum trisulphide was determined to be 398°C in a GLP-compliant study performed according to a recognized guideline (EU Method A.16). 

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
398 °C

Additional information

The constituents of the reaction mass present self-ignition temperatures of 335°C (dicerium trisulphide) and higher than 450°C (dilanthanum trisulphide). The experimental self-ignition temperature of 398°C for the reaction mass is therefore not surprising.