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Physical & Chemical properties

Vapour pressure

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Description of key information

A vapour pressure study is not required based on the melting point data.

Key value for chemical safety assessment

Additional information

In accordance with column 2 of Annex VII (required in Section 7.8) of REACH Regulation 1907/2006 the study does not need to be conducted if the melting point is above 300ºC. The melting point of kieselguhr soda ash flux calcined was determined to be > 723 K (equivalent to > 450 ºC. A vapour pressure study is therefore not required.