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Ecotoxicological information

Toxicity to aquatic plants other than algae

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Description of key information

Frond number: NOEC = 100 mg/l in terms of growth rate and yield

Dry weight: NOEC = 100 mg/l in terms of growth rate and yield

Key value for chemical safety assessment

EC10 or NOEC for freshwater plants:
100 mg/L

Additional information

OECD guideline 221.

In the preliminary test, nominal concentration were: 0, 10, 100 and 500 mg/l. Concentrations were determined by photometry at day 0 and day 7 and resulted to be stable. Therefore, static conditions were used for the test.

Definitive test was run as limit test, as no significant toxic effects were noted in the preliminary test. Effect levels were assessed based on nominal concentrations as measured concentrations were within the 80 - 120 % range of nominal ones.