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Toxicity to microorganisms

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Read-across to the assessment entities soluble zinc substances and neodecanoic acid is applied for the assessment of zinc neodecanoate, basic since the ions of zinc neodecanoate, basic determine its fate and toxicity in the environment. Reliable data available for soluble zinc substances and neodecanoate indicate that the moiety of ecotoloxicological concern are zinc cations. For zinc cations a NOEC of 0.1 mg Zn/L was derived for nitrification inhibition of microorganisms whereas data for neodecanoic acid point to a low (if any) toxic potential to aquatic microorganisms since an inhibition of nitrification was not observed up to the highest test concentration (NOEC ≥ 200 mg/L).

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