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Ecotoxicological information

Long-term toxicity to fish

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Aquatic toxicity studies offatty acids, tall-oil, manganese saltsare not available. Thus, read-across to the assessment entities soluble manganese substances and fatty acids, tall oil is applied since manganese cations and fatty acid anions determine its fate and toxicity in the environment. Reliable data indicate that themoiety of ecotoxicological concern are manganese cations though manganese is an essential trace nutrient. The lowest chronic effect concentration is the 4-months NOEC/EC10 of 0.6 mg Mn/L for Oncorhynchus mykiss. Data for fatty acids, tall oil point to a low toxic a low (if any) toxic potential to freshwater fish.

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