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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Melting Point (DTPMP-xK): >ca. 393 K. (EU Method A.1)

Key value for chemical safety assessment

Additional information

A limit melting point of >393K was determined for the substance using a valid read across. A recent, reliable DSC test demonstrates that the anhydrous form of the acid melts with decomposition at ca. 393 K. Salts would be expected to melt at a higher temperature than the acid, and to decompose.