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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Acute Daphnia immobilisation: LC50 = >100 mg/l; NOEC = 100 mg/L.  

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
100 mg/L

Additional information

Acute immobilisation to Daphnia magna has been investigated according to OECD/EU test methods and a limit concentration 100 mg/L 4-MHHPA. Due to the fast degradation of the test substance, the degradation product, Hexahydro - 4 Methylphthalic Acid was analysed. No effects as a result of exposure were observed.