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EC number: 923-201-3 | CAS number: -
Experimental result: NOEC (56 d) is ≥ 1000 mg/kg soil dw; EC10 and EC50 (56 d) values are > 1000 mg/kg soil dw for reproduction (OECD 222)
One experimental study is available investigating the effects of UMA 121 on the earthwormEisenia fetidaaccording to OECD 222 under GLP conditions (Friedrich, 2016). The test item was applied to the artificial soil at concentrations of 62.5, 125, 250, 500, 1000 mg/kg soil dry weight. Due to the limited water solubility the finely ground test item was directly mixed with artificial soil to obtain the desired test concentrations. The total test period was eight weeks. Adult earthworms (approx. 3 months old) were exposed to the test item for four weeks. Surviving adults were removed from the test vessels in order to assess adult mortality. The number of juveniles was recorded after another for weeks at the end of the testing period. In addition any behavioral and pathological symptoms as well as the fresh weight of surviving adult earthworms was assessed. UMA 121 had no effects on mortality and biomass of adult earthworms after 28 d and the reproduction (number of juveniles) after 56 d. The NOEC (56 d) is ≥ 1000 mg/kg soil dw and the corresponding EC10 and EC50 (56 d) values are > 1000 mg/kg soil dw for reproduction. For mortality a LC50 (28 d) of > 1000 mg/kg soil dw was derived.
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