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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The toxicity to freshwater algae was determined as an EC50 (72h) > 51.4 mg/L and EC10 (72h) = 20 mg/L (measured, WSF) for growth rate of Desmodesmus subspicatus (OECD 201)

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Additional information

In a GLP guideline study following OECD 201 green algae (Desmodesmus subspicatus) were exposed for 72 hours to Soybean oil, epoxidized, reaction products with methanol [BASF SE, 2013]. Based on the multicomponent composition that is only partially soluble the aquatic toxicity on algae was investigated by using water soluble fractions (WSFs) with a maximum loading of 51.4 mg/L (measured) test item. The 72-h EC10 for growth rate inhibition is determined to be 20 mg/L based on geometric mean concentration (EC50 (72h) > 51.4 mg/L).