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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

DTA determination

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
335 °C

Additional information

Decomposition of the substance in the presence of air starts at 229 ºC. Several studies done with or without the presence of air with the identical structural formula with Sodium as counter ion are available.

Testing results obtained in the same conditions are comparable (229ºC, 165º, 255º), nevertheless when testing is done without the presence of air, decomposition stars later, at 335ºC and 350ºC, with no melting before decomposition.