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Long-term toxicity to aquatic invertebrates

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Description of key information

For the substance as such, zinc bis(2-ethylhexanoate), no aquatic toxicity studies are available. Thus, read-across to the assessment entities soluble zinc substances and 2-ethylhexanoic acid is applied since the ions of zinc bis(2-ethylhexanoate) determine its fate and toxicity in the environment.


2-ethylhexanoic acid: 21-d NOEC values of two studies with Daphnia range from 18 mg/L to 25 mg/L.

Zinc: Data on 13 freshwater species are available and the corresponding species NOECs range from 0.014 to 0.400 mg Zn/L (dissolved). Data for 26 marine species indicate a species NOEC between 0.0056 and 0.9 mg Zn/L (dissolved). The respective species NOEC/EC10 values are applied in the species sensitivity distribution approach.


In sum, zinc bis(2-ethylhexanoate) has potential for long-term toxicity to aquatic invertebrates.

Key value for chemical safety assessment

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