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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Description of key information

Fatty acids, C14-18 and C16-18-unsatd., zinc salts:

Reliable soil toxicity studies of Fatty acids, C14-18 and C16-18-unsatd., zinc salts are not available. Thus, read across to the assessment entities soluble zinc substances and C14-18 fatty acids is applied, since zinc cations and fatty acid anions determine the fate and toxicity in the environment. Since C14-18-satd. and C16-18-unsatd. fatty acids have a low potential for terrestrial toxicity, the soil hazard assessment of Fatty acids, C14-18 and C16-18-unsatd., zinc salt is based on zinc ions. Please refer to the endpoint summary of the respective assessment entity for further details.


Fatty acid anions (C14-18-satd. and C16-18-unsatd):

Fatty acids as contained in plant and animal tissue are a natural component of soil, represent a significant part of the nutritional demands of living organisms, are rapidly degraded and non-bioaccumulative and have a low toxic potential to soil invertbrates. Fatty acids have a low potential for toxicity to aquatic invertebrates. Honeybees, parasitic wasps (Aphidius rhopalosiphi), predatory mites (Typhlodromus pyri) and soil dwelling beetles (Poecilus cupreus) seem to be relatively insensitive to fatty acids in laboratory studies. Thus, based on the absence of a hazard potential in the aquatic compartment and for soil arthropods, a low potential is assumed for other soil invertebrates.



37 NOEC or EC10 values on soil macroorganisms exept arthropods are available covering 6 different worm species and range from 35.7 mg Zn/kg for Enchytraeus albidus to 1634 mg Zn/kg dw for Lumbricus terrestris. 

Key value for chemical safety assessment

Additional information