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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

EC50 (72 h) for growth rate > limit of solubility of test item under test conditions
NOEC (72 h) for growth rate > = limit of solubility of test item under test conditions
Test substance could not be detected in any of the test susbstance preparations with a limit of detection of 1 mg/L.

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Additional information

Isononyl benzoate was tested in growth inhibiton test with single cell green algae Desmodesmus subspicatus under static conditions according to the guidelines EU Method C.3 and OECD 201. 1 g / l isononyl benzoate was stirred for 18 h and undissolved test substance was then removed by filtration. All samples analysed (incl.the stock solution) were below the limit of quantification of the analytical method, i.e. < 1 mg TOC/l. Therefore, no analyses were performed on the test concentrations after 72 h. No negative effects on growth rate were recorded, thus the NOEC growth rate is > = the limit of solubility of test item under test conditions and the EC50 growth rate is > the limit of solubility (limit of detection of TOC analysis = 1 mg/L). In the concentration range tested, the test item had a positive effect on the growth of the algae.