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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

EC50 (48 h) > 79 µg/L
(Effect value based on arithmetic mean measured concentration of the dissolved test substance)

Key value for chemical safety assessment

Additional information

The acute toxicity of the test substance to Daphnia magna was determined in a 48-hour semi-static test under GLP according to the OECD Guideline 202. A limit test was performed to demonstrate that the test item has no toxic effect on the test organisms up to and including the loading rate of 100 mg/L.The undiluted filtrate was applied; the measured concentration of the test substance in the test medium with a loading rate of 100 mg/L was 93 and 72 µg/L at the start of the renewal periods. At the end of the two 24-hour renewal periods, 89 and 94% of the initially measured concentration were found. The test item had no acute toxic effects on Daphnia magna up to the analytically measured concentration of 79 µg/L which corresponds to the solubility limit of the test item in test water at a loading rate of 100 mg/L (respective 48-h EC50 for immobilization > 79 ug/L test substance).