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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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.