Registration Dossier
Registration Dossier
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EC number: 485-320-2 | CAS number: 221667-31-8
Endpoint summary
Administrative data
Description of key information
Additional information
Cyprosulfamide is not readily biodegradable according to OECD criteria (30 % after 28d; OECD 301 F).
Two GLP studies investigating the transformation of Cyprosulfamide in water/sediment systems under aerobic and anaerobic conditions (OECD 308) are available.
Under aerobic conditions the substance dissipated from the water body with a half-life of 68.1 – 95.4 days at 20 °C (144.6 - 202.5 days, recalculated to 12 °C). In the entire system, it dissipated with a half-life of 79 -158 days at 20 °C (167.7 - 335.4 days, recalculated to 12 °C). The rate of mineralization (formation of 14CO2) at 20 °C reached a maximum 24.5% AR at the end of the incubation (132 days). Under anaerobic conditions, the substance dissipated from the water body with a half-life of 133 - 136 days at 25 °C (442.8 - 452.8 days, recalculated to 12 °C) and from the entire system with a half-life of 198 - 200 days at 25°C (659.2 - 665.9 days, recalculated to 12 °C). No volatile components were formed after 155 days at 25 °C.
The dissipation half-lives of Cyprosulfamide in aerobic soils (DT50) were between 2.3 - 10.6 days at 20°C (4.9 - 22.5 days, recalculated to 12 °C) in four different soils. After 120 days 43 - 61.9% applied radioactivity (AR) were mineralized to 14CO2. Under anaerobic conditions, Cyprosulfamide a half-life of approx. 48.5 - 59.5 days at 20°C was determined (103 - 126.3 days, recalculated to 12 °C). After 180 days 3.1 - 14.3% AR were mineralized to 14CO2.
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