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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

Fathead minnows (Pimephales promelas) were exposed for 96hours under flow-through conditions to 5 mean measured concentrations of Hexylcinnamaldehyde in a solvent ranging from 0.12 to 2.3 mg/L. No effects were observed up to the aqueous solubility limit of the substance.

Key value for chemical safety assessment

LC50 for freshwater fish:
1.7 mg/L

Additional information

Fathead minnows (Pimephales promelas) were exposed for 96hours under flow-through conditions to 5 mean measured concentrations of Hexylcinnamaldehyde in a solvent ranging from 0.12 to 2.3 mg/L.

The 96hour LC50 value was 1.7 mg/L, with 95% confidence limits of 0.93 and 2.3 mg/L.

The no-mortality concentration and the NOEC were both 0.93 mg/L.

No effects were observed up to the aqueous solubility limit of the substance. Any mortality or effects observed were therefore due to physical effects due to the solvent artificially maintaining the test substance in an emulsion that was stable under the conditions ofthe study (flow-through conditions) but not possible to maintain under environmental conditions.