Registration Dossier

Physical & Chemical properties

Vapour pressure

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Description of key information

Vapour pressure determination was waived as being scientifically unjustified.

Key value for chemical safety assessment

Additional information

The existing data shows the test substance, Silicon Nitride, has got a melting point of 1900°C . In accordance with Annex VII, Column 2 of the REACH regulation, a Vapour Pressure determination does not need to be conducted on substances with a melting point higher than 300°C.