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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The toxicity op OTNE towards Scenedesmus subspicatus was investigated according to methodology comparable to international Guidelines (OECD Guideline 201) under GLP. Algae were exposed to water accommodated fractions (WAF) of 14C-labeled OTNE with nominal concentrations of 0.50, 0.75, 1.1, 1.7 and 2.5 mg/l in a static system for 72 hours. Validity criteria for the test were met. The 72h-EC50 for both growth rate and biomass was found to be > 2.6 mg/l. The 72h-NOEC was found to be >= 2.6 mg/l based on arithmic mean measured 14C-labeled OTNE concentrations.

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
2.6 mg/L

Additional information