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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

ErC50 (72h) > 1 mg/L and NOEC (72h, growth rate) = 0.18 mg/L for Selenastrum capricornutum (new name: Pseudokirchnerella subcapitata) [EU Method C.3; test item: structural analogue with EC 413-750-2]

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Additional information

The acute toxicity of the structural analogue to aquatic algae has been determined in a test with Selenastrum capricornutum (new name: Pseudokirchnerella subcapitata) according to EU Method C.3. Since the values of ErC50 and EbC50 found at 72 h are above the solubility limit (> 1mg/L, NOEC (72h) = 0.18 mg/L) and since of the concentrations tested those around the solubility limit gave inhibitions ≤ 10% (both on the biomass and the growth rate), it was decided not to classify the substance. Since EC 700-397-7 is a near analogue to the test substance (EC 413-750-2), the experimental data from this substance were used in a read-across approach.