Product |
Type |
AI concn |
Cyclanilide will only be commercialised in combination products |
Mallard duck |
LD50 >215 mg/kg |
Rainbow trout [96 hrs] |
LC50 >11 mg/litre |
Bluegill sunfish [96 hrs] |
LC50 >16 mg/litre |
Earthworm [14 days] |
LC50 469 mg/kg |
Bee [contact] |
LD50 >100 μg/bee |
Bee [oral] |
LD50 89.5 μg/bee |
Daphnia magna |
EC50 13 mg/L |
Alga (S carpricornutum) |
EC50 (cell density) 1.7 mg/L |
Fate in soil:
The DT50 for soil photolysis is 151 days at 25°C.
Cyclanilide is degraded by microbes in the soil. In aerobic soil metabolism studies, the major metabolite is 2,4-dichloroaniline (2,4-DCA) at 1.5 - 16% of the applied radioactivity.
The DT50 for laboratory aerobic soil metabolism is 15-49 days (mean = 29 days) at 20°C. The corresponding DT90 is 50-162 days (mean = 96 days).
Under laboratory anaerobic conditions, the DT50 for cyclanilide at 20°C is 15 months or more.
In field dissipation studies in France and Spain, the DT50 for cyclanilide is 11-45 days (mean = 28 days) and the DT90 was 37-151 days (mean = 94 days). In the US, the DT50 was measured at 34-114 days (mean = 65 days).
The Koc for cyclanilide ranges from 194 (loamy sand) to 565 (silty loam), with Kd ranging from 1.05 - 3.83.
Cyclanilide has low to moderate soil persistance and mobility.
Fate in aquatic systems:
Cyclanilide is primarily degraded by microbes in water.
It is not hydrolysed at pH 5,7 or 9. The product does not bioaccumulate in water.
The DT50 for aqueous photostability ranges from 997 hours (pH 5, 9) to 1173 hours (pH 7).
In water / sediment studies, the DT50 for cyclanilide is 17-18 days (water layer) and 56-63 days (whole system). After 105 days, 14-18% of the parent compound is found in the water phase and 13-15% in the soil layer.
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