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Ecotoxicological information

Toxicity to terrestrial plants

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Description of key information

The chemical safety assessment according to Annex I of Regulation (EC) No. 1907/2006 does not indicate the need to investigate further the toxicity to terrestrial plants.

Key value for chemical safety assessment

Additional information

No experimental data evaluating the toxicity of Glycerides, C8-21 and C8-21-unsaturated, mono- and di-, acetates (CAS No. 97593-30-1) to terrestrial plants are available.


The test substance is characterized by a log Koc > 3.5 indicating high potential for adsorption to soil particles. Tests with soil-dwelling organisms that feed on soil particles are therefore most relevant for the evaluation of soil toxicity ofGlycerides, C8-21 and C8-21-unsaturated, mono- and di-, acetates. Due to the adsorption potential of this substance, it is not expected to be found in the soil pore water, and uptake by plants is therefore unlikely. On the other hand, the Guidance on information requirements and chemical safety assessment, Chapter R7.c states that earthworm testing allows potential uptake via surface contact, soil particle ingestion and pore water, while plant exposure will be largely via pore water (ECHA, 2008). Therefore, earthworm was chosen as the most suitable organism to assess the terrestrial toxicity of this substance. The Guidance on information requirements and chemical safety assessment Chapter R.7c, (ECHA, 2008) states that in the absence of a clear indication of selective toxicity, an invertebrate (earthworm or collembolan) test is preferred.

Earthworm tests conducted on two analogue category members are used as read-across (in accordance with Regulation (EC) No. 1907.2006, Annex XI, 1.5). Both studies were performed according to OECD 207, showing no effects on survival or biomass of Eisenia fetida after 14 days, leading to NOEC values (14 d) ≥ 1000 mg/kg dw (limit tests) (Muckle, 2012; Moser, 2012).


Glycerides, C8-21 and C8-21-unsaturated, mono- and di-, acetates is readily biodegradable. Therefore, rapid and ultimate degradation in most environments, including soil, can be expected. Chronic exposure of terrestrial organisms is thus very unlikely. Furthermore, this substance did not show acute toxicity to aquatic organisms (fish, aquatic invertebrates and algae) up to a nominal loading rate of 100 mg/L or chronic toxicity up to 10 mg/L (nominal, loading rate).

Based on the available information, the chemical safety assessment according to Regulation (EC) No. 1907/2006, Annex I, does not indicate the need to conduct further tests on terrestrial plants.