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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The acute toxicity of hydrogen peroxide to aquatic invertebrates was tested in a valid study on Daphnia pulex (Shurtleff 1989). The LC50 value after 24 and 48 hours was 2.4 mg/L.

Key value for chemical safety assessment

Additional information

Data on the acute toxicity of hydrogen peroxide to aquatic invertebrates is available for four different species from two phyla. Hydrogen peroxide was more toxic to crustacea than to molluscs with the waterflea Daphnia pulex representing the most sensitive test species (EC50: 2.4 mg/L) followed by the amphipod Gammarus (EC50: 4.4 mg/L) and the snail Physa (EC50 : 17.7 mg/L). The acute toxicity of hydrogen peroxide to invertebrates was tested in a semi-static, 48 - hours assay with Daphnia pulex (Shurtleff 1989b) according to USEPA Toxic Substances Control Act Test Guidelines (1985, 1987). Tested hydrogen peroxide concentrations ranged from 0.5 to 500 mg/L. The validity criteria of the test were fulfilled in the sense that no mortality was observed in the controls. Significant dissipation of the test material ranging from 10% to 60% occurred within 24 hours with the four lowest test concentrations (0.5 to 50 mg/L, nominal). The LC50 value was determined to be 2.4 mg/L in the test. No reliable confidence intervals could be calculated.