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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

Valeraldehyde was tested on fathead minnows (Pimephales promelas) in a 96-h flow-through acute study. Based on mean measured concentrations, the 96-h LC50 was 12.4 mg/L.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
12.4 mg/L

Additional information

Valeraldehyde was tested on fathead minnows (Pimephales promelas) in a 96-h flow-through acute study. No specific guideline was reported, but documentation is sufficient to assign validity and good reliability. The test design is similar to OECD 203. Five test concentration and 1 control were set up. One test chamber with 20 fish was used per test concentrations. The test concentrations were analytically verified by GLC every day in each test chamber (recovery: 98.0±3.3%).

Concentrations were as follows:

nominal: 0 (control), 10, 15.4, 23.7, 36.4, and 56.0 mg/L

measured (corrected average): < 1.0, 5.76, 9.52, 11.9, 22.6, 35.5 mg/L

Mortalities and signs of abnormal behaviour were observedin the three highest concentrations. Based on mean measured concentrations, the 96-h LC50 was 12.4 mg/L.