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Ecotoxicological information

Toxicity to terrestrial arthropods

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Description of key information

No data available. Based on all related information avaivlale, no toxicity to terrestrial arthropods is expected.

Key value for chemical safety assessment

Additional information

No experimental data on toxicity to terrestrial arthropods are available for Fatty acids, C18 unsaturated, trimers, hydrogenated. In accordance with Regulation (EC) No. 1907/2006, Annex IX, column 2, 9.4 further studies on the effects on terrestrial organisms do not have to be conducted since the chemical safety assessment indicates that there is no need. The test substance is characterized by a high log Koc (log Koc > 5) indicating a considerable potential for adsorption to soil particles. Therefore, tests with soil-dwelling organisms that feed on soil particles are most relevant for the evaluation of soil toxicity of the test substance. In addition, in the absence of a clear indication of selective toxicity, an invertebrate (earthworm or collembolan) test is preferred, as outlined in ECHA guidance Section R.7.11.5.3 (ECHA, 2012). A testing proposal for a long-term earthworm study (OECD 222) with the structural analogue Fatty acids, C18-unsatd., dimers (CAS No. 61788-89-4) is currently under evaluation. Moreover, available aquatic studies did not result in any effects up to the water solubility limit. Based on the available data, toxicity to terrestrial arthropods is not expected to be of concern, and consequently, no further testing is required. However, the dossier will be updated as soon as possible and the Chemical Safety Assessment according to Annex I of Regulation (EC) No 1907/2006 will be re-evaluated based on the outcome of the new earthworm study.