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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

With high probability acutely not harmful to aquatic invertebrates.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
341.5 mg/L

Additional information

To determine the toxicity of Imidazole to aquatic invertebrates, a static non-GLP study following EU method C.2 using Daphnia magna was performed. The calculated nominal EC50 (48h) value in this study was 341.5 mg/l (BASF 1988).

In order to support the data on CAS 288-32-4, imidazole, acute data were also taken from CAS 693-98-1, 2-methylimidazole and CAS 916 -47 -7, 1 -methylimidazole. These substances reveal comparable structures as they consist of a imidazole-ring with an additional methyl group.

These data support the assumption that imidazole is of low toxicity to aquatic organisms. Due to all the data present, it can be concluded that imidazole is of low toxicity to aquatic invertebrates.