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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

The 48-h EC50 value is 180 mg/L in Daphnia magna.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
180 mg/L

Additional information

The acute toxicity of the test substance to aquatic invertebrates was determined in a GLP-compliant test according to OECD 202 (CG, 1994). In this study, Dapnia magna (2 replicates of 10 daphnids each) were exposed to nominal concentrations of 0, 32, 58, 100 and 180 mg/L of the test substance for 48 hours (static). Test substance recovery was in the range of 98-100% of nominal values. The reported results are related to the average analytical concentrations of the test article measured at the beginning and at the end of the test. No immobilization or other abnormal behaviour of the daphnids was observed after 48 -hour exposure to concentrations of up to 100 mg/L. At the highest test concentration of 180 mg/L, after 48 hours, immobilization was seen in ten of twenty test organisms. Based on these results, the 48-h EC50 was determined at 180 mg/L.