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Ecotoxicological information

Toxicity to aquatic plants other than algae

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Description of key information

ErC50 (Lemna minor, 7d) > 114.97 mg/l (geom. mean of measured conc.)

Key value for chemical safety assessment

EC50 for freshwater plants:
114.97 mg/L

Additional information

The acute toxicity of the test item to aquatic plants was investigated in a 7–day static test to Lemna minor, according to the OECD Guideline 221 (2006). The study was performed using 5 nominal concentrations ranging from 1.0 to 100 mg/l. The frond number and the dry mass of each replicate were determined. Subsequently, Growth rate µ and the yield were determined from these parameters. As the deviation of the measured concentrations was greater than 20 % of the nominal concentration, the biological results were based on the geometric mean of the measured concentrations. All the validity criteria were met.

The ErC50 (7d) based on both frond number and dry mass was found to be > 114.97 mg/l.