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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

One reliable study is available for the registered mixture. The mixture exhibits a 48h EC50 for freshwater invertebrates of 56 mg/L.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
56 mg/L

Additional information

The 48h acute toxicity of the registered mixture toDaphnia magnawas studied according to the OECD 202 guideline under GLP compliance.  Daphnids were exposed under static conditions to control and test item nominal concentration of 10, 18, 32, 56 and 100 mg/L for 48 h.

The test item concentration in the test samples was determined by a validated high performance liquid chromatography with mass spectrometry (HPLC-MS) using an external standard. The measured concentrations were in the range of 74 -76% at 0h and 73 -75% at 48h therefore it was justifiable to calculate the results based on mean measured test concentrations.

The 48– hour EC50for the test item was > 56 mg/L with 95% confidence limits (42 -74 mg/L).

These results were assessed to be suitable for chemical risk assessment and classification and labelling purposes.