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Ecotoxicological information

Toxicity to terrestrial plants

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Description of key information

LC50 > 95.1 mg/kg dw; NOEC 95.1 mg/kg dw

Key value for chemical safety assessment

Short-term EC50 or LC50 for terrestrial plants:
95.1 mg/kg soil dw

Additional information

Data on the substance itself are not available. Data are available on a structural analogue of the substance, a trimellitate ester with mixed C8 -C10 side chains.

The test item 1,2,4-Benzenetricarboxylic acid, mixed decyl and octyl triesters was tested on effects of seedling emergence and seedling growth on three non-target plant species representing three plant families according to OECD Guideline for Testing of Chemicals No. 208. For the test the following plant species were selected: wheat (Triticum aestivum) for Category 1, mustard (Brassica alba) for Category 2 and cress (Lepidium sativum) for Category 3. A control and one limit concentration of 100 mg/kg dry soil (nominal) were tested for each species. For the limit concentration the test substance was mixed with silica sand and then incorporated into soil in which the seeds were sown. The number of seedlings that emerged were recorded. After 17 days in the test with Brassica alba resp. 18 days in the test with Triticum aestivum and Lepidium sativum the plants were harvested and weighed. All tested species showed no phytotoxic effects at the tested concentration compared to the control. The LC50 for seedling emergence and the EC50 for growth of Triticum aestivum, Lepidium sativum and Brassica alba were therefore observed to be greater than 100 mg/kg dry soil. This corresponds to an LC50 > 95.1 mg/L for the registered substance when differences in molecular weight are taken into account.