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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

In order to test acute toxicity to daphnia the test item showed EC 0 = 1.25 mg/L, EC 100 > 40mg/L and an EC50 = 4.8 mg/L after 48 hours.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
4.8 mg/L

Additional information

In none of the tested test item concentration 100 % immobilisation was reached within the complete test period. In the respective range finding test a concentration of 32 mg/L resulted in 100% immobilisation.

Based an the results of the range finding test 40.0 mg/L was chosen to be the highest test item concentration within the main test.

The EC100 determined within the range finding test (32 mg/L) is similar to the EC90 (48h) calculated for the main test (30.7 mg/L). The EC50 of the test item can be determined. A determination of an EC100 for this test item is difficult as no clear dose/response relationship is obvious at test item concentrations above 20 mg/L.