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Physical & Chemical properties

Flammability

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Description of key information

Not flammable

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

Silicon nitride is used as a refractory material in ceramics; on this basis, thermal stability including non-flammability is an intrinsic property of silicon nitride. Silicon nitride is considered to be non-flammable.

Justification for classification or non-classification

Silicon Nitride is non-flammable. On this basis it does not meet the criteria for flammability (flammable solids or self-reactive solids) under the CLP regulation or the Dangerous Preparations Directive.