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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

No effect was observed at the highest concentration tested. Therefore, EC50-48h was determined to be higher than 494.7 mg/L.

Key value for chemical safety assessment

Additional information

The acute toxicity of 1,2,4 Triazole to Daphnia magna has been investigated in an OECD 202 test according to GLP requirements (Thiebaud and Kae, 1996). In the test conditions, no effect was observed at the highest concentration tested. The concentrations were maintained within 80% throughout the duration of the test. Therefore, the EC50-48h was determined to be higher than 494.7 mg/L. In addition, the acute toxicity of 1,2,4 Triazole to Daphnia magna has been investigated in another OECD 202 test (Rufli, 1982) and can be used as a supporting study. The EC50-24h was determined to be higher than 900 mg/L (nominal concentrations). However, the concentrations were not completely maintained within 80% throughout the duration of the test.

To conclude, 1,2,4 Triazole is considered as not harmful to aquatic invertebrates.