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Physical & Chemical properties

Melting point / freezing point

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Description of key information

Experimental value for melting point of 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid is found to be 380°C at 960 hPa. No decompositonwas observed at this melting point.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
401.07 °C

Additional information

Experimental value for melting point of 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid is found to be 380°C at 960 hPa. No decompositon was observed at this melting point. The other authoritative sources of information also indicate the melting point to be in the range of 220 to 350 °C. However, for the purpose of the chemical safety report, the melting point shall be considered to be 401.07 °C.