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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Ecotoxicological information

Toxicity to soil microorganisms

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Description of key information

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

Data on the toxicity to soil microorganisms are not available for Fatty acids,C14-18 and C16-18-unsatd., zinc salts. Thus, read-across to the assessment entities soluble zinc substances andC14-18fatty acids is applied, since zinc cations and fatty acid anions determine its fate and toxicity in the environment. Since C14-18-satd. and C16-18-unsatd. fatty acids have a low potential for ecotoxicity, the hazard assessment of Fatty acids, C14-18 and C16-18-unsatd., zinc salts 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, are rapidly degraded and non-bioaccumulative and have a low ecotoxic potential, including toxicity to microorganims. Available data indicate a low toxic potential of fatty acids to aquatic microorganisms. Based on the absence of a hazard potential in the aquatic compartment, a similar low potential is also assumed for soil microbes.



For microbial assays, in total 108 individual high quality NOEC/EC10s represent 4 nitrogen transformation processes, 5 carbon transformation processes and 8 enzymatic processes and range from 17 mg Zn/kg dw for respiration to 2623 mg Zn/kg dw for phosphatase.

Key value for chemical safety assessment

Additional information