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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Auto flammability

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Administrative data

Link to relevant study record(s)

Description of key information

Autoflammability testing considered unnecessary on the basis that the melting point of Silicon nitride is approximately 1900°C and the material does not self-combust up to this temperature.

Key value for chemical safety assessment

Additional information

In accordance with Annex VII, column 2 of the REACH Regulation, this study does not need to be conducted if preliminary results exclude self-heating of the substance up to 400°C. The melting point of Silicon Nitride is 1900°C and the material does not self-combust up to this temperature; on this basis it may be concluded that testing for autoflammability is not justified.