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Ecotoxicological information

Toxicity to microorganisms

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Aquatic toxicity studies of Fatty acids, C9-13-neo-, copper salts are not available. Thus, read-across to the assessment entities soluble copper substances and neodecanoic acids, as a structural analogue of fatty acids, C9-13, neo, is applied since the ions of fatty acids, C9-13-neo, copper salts determine its fate and toxicity in the environment. Reliable studies indicate that the moiety of ecotoxicological concern are copper cations. Based on a weight-of-evidence approach and five studies, a 30-d NOEC of 0.23 mg dissolved Cu/L (inhibition of total respiration / respiration rate) was determined for microorganisms. Data for neodecanoic acid (structural analogue of fatty acids, C9-C13-neo) point to a low toxic potential to aquatic microorganisms since an effect up to and at the highest test concentration was not observed resulting in a NOEC ≥ 200 mg/L.

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