Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Description of key information

Disodium hexafluorosilicate melts at red decomposition.

Key value for chemical safety assessment

Additional information

According to the information obtained from peer reviewed handbooks/ publications, melting point cannot be determined since disodium hexafluorosilicate descomposes before melting.

TGA analysis shows that the substance decomposes at 620ºC approximately.