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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

3-acetamido-5-amino-4-hydroxybenzenesulphonic acid is readily biodegradable in water.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

3-acetamido-5-amino-4-hydroxybenzenesulphonic acid is 69.9% biodegradable in water in 28 days

The summary of the results are presented below


Sr. No

Endpoint name





% degradation 50 % in 38 days


 % degradation  69.9  %   in 28 days


According to PBT profiler 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid is 50% biodegradable in water in 38 days (half-life). Also from QSAR prediction it is found that the substance is 69.9% degradable in 28 days. Since the half life is less than the threshold of 60 days (to qualify the chemical as persistent).