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Aquatic toxicity studies with zinc ditetradecanoate are not available. In the assessment of zinc ditetradecanoate, read-across to analogue substances and/or the assessment entities soluble zinc substances and tetradecanoic/myristic acid is conservatively applied since the ions of zinc ditetradecanoate determine its fate and toxicity in the environment.Zinc salts of shorter- and longer-chained fatty acids appear to have a low potential for toxicity to freshwater algae, invertebrates and fish. A similar low potential is assumed for zinc ditetradecanoate.

Reliable data available for analogue substances, soluble zinc substances and myristic acid indicate that the moiety of ecotoxicological concern are zinc cations. Aquatic toxicity data of myristic acid point to a low toxic potential to aquatic algae, invertebrates and fish. The ecotoxic potential of the fatty acid chain, i.e. myristate, is assumed to be negligible. Fatty acids are generally not considered to represent a risk to the environment, which is reflected in their exclusion from REACH registration requirements (c.f. REACH Annex V (Regulation (EC) No 987/2008)).

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