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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Weight of evidence approach based on four peer-reviewed data from handbooks (three times -41.6, -42 deg C). 

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
232 K

Additional information

Although it could not be confirmed that the melting point values result from different sources it can safely be concluded that the melting point of Nitric acid is below - 20 deg C being the lower cut-off value below which a melting point needs not to be determined (ECHA endpoint specific guidance R.7A).