Registration Dossier
Registration Dossier
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EC number: 254-879-2 | CAS number: 40306-75-0
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
3-acetamido-5-amino-4-hydroxybenzenesulphonic acid is 50% biodegradable in water in 38 days (half-life) indicating that it is not persistent (readily biodegradable) in water while in sediment in it is 50% biodegradable in 340 days(8160 hrs) (half-life) indicating that it is persistent(not readily biodegradable) in sediment.
Key value for chemical safety assessment
- Half-life in freshwater:
- 912 h
- at the temperature of:
- 25 °C
- Half-life in freshwater sediment:
- 8 160 h
- at the temperature of:
- 25 °C
Additional information
Based on level III fugacity model the half life period of 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid was estimated. Half life period of 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid in water was observed to be 38 days while in sediment it is 340 days. From these half life values it is concluded that 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid is readily biodegradable (non persistent) in water where as it is non biodegradable (persistent) in sediment.
However it has been observed that 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid does not diffuse in the sediment medium since its percentage in the sediment medium is reported to be 0% and hence persistence in the sediment medium is not likely to be critical
Media |
Half-Life |
Percent in |
Water |
38 |
35% |
Sediment |
340 |
0% |
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