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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

The melting point of 3-amino-4-hydroxy-5-nitrobenzenesulphonic acid was found to be >940 degC at an atmospheric pressure of 975 hPa. No decomposition & sublimation observed of 3-amino-4-hydroxy-5-nitrobenzenesulphonic acid at this melting point.Melting point value at 101325 Pa is equivalent to 976.87 degC.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
976.87 °C

Additional information

The melting point of 3-amino-4-hydroxy-5-nitrobenzenesulphonic acid by the capillary method was found to be >940 degC at an atmospheric pressure of 975 hPa.There was no decomposition & sublimation observed of 3-amino-4-hydroxy-5-nitrobenzenesulphonic acid at this melting point.Melting point value at 101325 Pa is equivalent to 976.87 degC.