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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

melting point/freezing point
Type of information:
experimental study
Adequacy of study:
weight of evidence
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Only short abstract in english is available, article in russian; however key information is available.
Principles of method if other than guideline:
Only short abstract in english is available, article in russian, therefore no detailed description of method is available.
GLP compliance:
not specified
Type of method:
thermal analysis
Melting / freezing pt.:
600 °C
Atm. press.:
760 mm Hg
Remarks on result:
other: transition is reported
Melting / freezing pt.:
780 °C
Atm. press.:
760 mm Hg
Decomp. temp.:
> 1 100 °C
The stability of sodium selenate was studied by thermographic and y-ray methods. Polymrohic transition is reported at 600°C, melting at 700 °C and rapidly decomposition above 1100 °C.

Description of key information

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
780 °C

Additional information