Registration Dossier
Registration Dossier
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EC number: 204-853-1 | CAS number: 127-63-9
Endpoint summary
Administrative data
Description of key information
The biodegradation of DPS in water was determined in a 28 day-ready-biodegradability test with carbon dioxide evolution (OECD 301 B). The substance was biodegraded for 0-5%, hence the substance is not ready biodegradable under the standard test conditions.
The biodegradation of DPS was also determined in a standard simulation test in natural water (OECD 309) with [14C]-Diphenyl Sulphone. The degradation rate and degradation products were measured. Two different concentrations (10 μg/L and 95 μg/L) were applied.
The mineralisation rate was negligible. The DT50 values for [14C]-Diphenyl Sulphone were determined to be 800 days (10 μg/L) and 1210 days (95 μg/L) in the water phases. Therefore, [14C]-Diphenyl Sulphone is very persistent. Only very low amounts were trapped as [14C]-CO2. (0.1% for 10µg/L, <LOQ for 95 µg/L).No degradation products were measured.
A soil degradation study is not considered necessary because exposure of the soil is unlikely. Furthermore, the substance has a low adsorption potential, the biodegradation in water is low and no transformation products were found in the water simulation test.
Additional information
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