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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Description of key information

In an acute toxicity limit test to according to OECD guideline 207, earthworms were exposed to a limit dose of 1000 mg/kg soil dry weight (BASF SE, 2013). No mortality was observed after an observation period of 14 d.

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Additional information

In a 14 day acute toxicity study, earthworms (Eisenia fetida) were exposed to 2-[2-(2-methoxy-5-nitrophenyl)diazenyi]-N-(2 -methoxyphenyl)-3-oxo-Butanamide at 1000 mg/kg dry weight of soil.  The reference chemical used was Chloroacetamide at concentrations of 3.75, 7.5, 15.0, 30.0, and 60.0 mg/kg dry soil weight. The experiment was carried out in accordance with OECD guideline 207. The 14 day LC50 was > 1000 mg/kg dw dry weight soil. The test substance is considered to be non-toxic to earthworms up to a concentration of 1000 mg/kg dw of soil.