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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Dissociation constant

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Description of key information

The experimental Dissociation constant (pKa) values of 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid at 30 °C are found to be as follows:

0.000000165, 0.000000166 and 0.000000175 indicating that it has dissociation properties.

Key value for chemical safety assessment

pKa at 20°C:
0

Additional information

The experimental Dissociation constant (pKa) values of 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid at 30 °C are found to be as follows:

0.000000165, 0.000000166 and 0.000000175 indicating that it has dissociation properties.The average pKa value at 20 Deg C is equivalent to 0.00000011244444466667