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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

72-h EC50 value of >913 mg/l and NOEC of ≥913 mg/l growth rate Scenedesmus subspicatus reliability 1

Key value for chemical safety assessment

Additional information

A 72 h EC50 of > 913 mg/l and NOEC of ≥ 913 mg/l have been determined for the effect on growth rate on the algae Scenedesmus subspicatus (new name: Desmodesmus subspicatus) (EU Method C.3 (Algal Inhibition test) based on nominal concentrations of the substance.

As the substance hydrolyses rapidly (half-life approximately 2.6 hours) to propylsilanetriol, under ecotoxicity testing conditions the organisms are exposed predominantly to the hydrolysis product.