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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Acute toxicity to Daphnia magna (EU method C.2):  EC50 (48 h) > 100 mg/L, EC0 (48 h) > 100 mg/L; effective concentrations are exceeding the maximum solubility of the test substance in the test medium.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
100 mg/L

Additional information

The acute toxicity of dioctyl fumarate to Daphnia magna was determined in a 48 hours static limit test. The following guideline was applied: Annex 5 (92/69/EEC) to Commission Directive 92/32/EEC, Part C; methods for determination of ecotoxicity, publication No: L383, 29 December 1992: C.2. Acute Toxicity for Daphnia.

Neonates of Daphnia magna, not more than 24 hours old, were exposed to a nomial loading rate of 100 mg/L (correlating to an initial measured concentration of 0.76 mg/L) in reconstituted water according ISO 6341.The test medium was prepared by stirring nominal 100 mg/L for ca. 24 hours followed by centrifugation at 840 g for two minutes.

The 48-hour EC50 in Daphnia magna was greater than a nomial loading rate of 100 mg/L in an aqueous solution of dicotyl fumarate, based on immobilisation of the test animals. The NOEC 48 h is estimated to be at a nomial loading rate of 100 mg/L.