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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Description of key information

NOEC (Daphnia magna, 21 d) = 10 mg/L (reproduction rate)
EC50 (Daphnia magna, 21 d) = 77 mg/L (reproduction rate)

Key value for chemical safety assessment

EC10, LC10 or NOEC for freshwater invertebrates:
10 mg/L

Additional information

A study investigating the long-term toxicity of maleic anhydride to Daphnia magna is published. The study was a performed as a prolonged toxicity test according to a proposal of the German Federal Environmental Agency (1984). The reproduction of Daphnia magna was determined within 21 days of exposure to the substance. A NOEC of 10 mg/L and an EC50 of 77 mg/L were determined (Hüls AG, 1988).