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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

ErC10 (72 h) > 119 µg/L
ErC50 (72 h) > 119 µg/L
(Effect values are based on geometric mean measured concentrations of the dissolved test substance.)

Key value for chemical safety assessment

Additional information

The toxicity of the substance on the growth of the freshwater green algae Pseudokirchneriella subcapitata was investigated in a 72-hour static test under GLP according to OECD 201.

An undiluted filtrate with a loading rate of 100 mg/L was used as the highest test medium and was diluted with test water for the preparation of the test media with lower test concentrations: 1:2.2, 1:4.6, 1:10 and 1:22.

The respective EC10 and EC50 for the inhibition of growth rate are above the highest nominal loading rate of 100 mg/L test substance, corresponding to a geometric mean measured concentration of 119 ug/L test substance.