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Ecotoxicological information

Toxicity to aquatic plants other than algae

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Description of key information

With high probability, not acutely toxic to non-algal aquatic plants.

Key value for chemical safety assessment

EC50 for freshwater plants:
31 mg/L

Additional information

In a 5 day toxicity study with Lemna sp. exposed to potassium formate (CAS 590-29-4), EC50 values of 31, 34, and 38 mg/L were determined for biomass (fresh weight), chlorophyll a content, and frond number, respectively. Test item concentrations were nominal. The study was performed according to the OECD 221 guideline (Lemna sp. growth inhibition test) although there were acceptable deviations (shorter exposure duration, lower light intensity conditions).