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EC number: 204-853-1 | CAS number: 127-63-9
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
The aerobic biodegradation of diphenyl sulphone was estimated by the models Biowin 1 and Biowin 2, included in BIOWIN, which are intended to convey a general indication of biodegradability under aerobic conditions, and not for any particular medium. The models show that Diphenyl sulphone biodegrades fast.
Half lives in surface water and sediment were estimated with the PBT profiler (US-EPA) which calculates half life values from ultimate biodegradation estimations in the Biowin 3 model included in BIOWIN. The calculated half life values for Diphenyl sulphone are 15 days for surface water and 140 days for sediment.
Key value for chemical safety assessment
- Half-life in freshwater:
- 15 d
- Half-life in freshwater sediment:
- 140 d
Additional information
The aerobic biodegradation of diphenyl sulphone was estimated by the models Biowin 1 and Biowin 2, included in BIOWIN version 4.10. Biowin 1 (Linear Biodeg Probability) and Biowin 2 (Non-Linear Biodeg Probability), are intended to convey a general indication of biodegradability under aerobic conditions, and not for any particular medium. A biodegradation probability between 0.5 and 1 is considered as "biodegrades fast". The biodegradation probability of diphenyl sulphone is 0.8998 in biowin1 and 0.9709 in Biowin2, showing that the substance biodegrades fast.
Half lives in surface water and sediment were estimated with the PBT profiler (US-EPA) which calculates half life values from ultimate biodegradation estimations in the Biowin 3 model included in BIOWIN. The calculated half life values for Diphenyl sulphone are 15 days for surface water and 140 days for sediment. To account for the slower biodegradation under anaerobic conditions in the deeper layers of the sediment, the overall half life in sediment is estimated to be about 9 times higher than the half life in water.
The calculated results have no impact on classification but can be used for risk assessment.
Test results from simulation tests in water or sediment are not available.
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