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Short-term toxicity to aquatic invertebrates

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Description of key information

In a semi-static test  an EC50 of > 100 mg/L after 48 h was obtained for the substance against daphnia magna. The result is expressed in terms of nominal concentrations. No toxic effects against fish were observed at a limit test concentration of 100 mg/L under exposure conditions. 

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
100 mg/L

Additional information

"Should read: > 100 mg/L"

Concerning the toxicity towards aquatic invertebrates, a study was conducted in accordance with EEC Methods for Determination of Ecotoxicity Annex to Directive 92/69/EEC, Part C which is in most parts equivalent to the OECD Guideline No. 202. The Daphnia were exposed to a limit test concentration of nominally 100 mg/L dissolved in water under semi-static conditions. Observations were made on the swimming ability and the immobilisation rate, respectively, after 24 and 48 hours of exposure. No toxic effects on mortality against Daphnia were observed after 48 h. The results are expressed in terms of nominal concentrations. Effective concentrations were below the detection limit of the DOC determination (< 2 mg/L) at 0 and 24 hours according to the semi-static conditions, respectively.

The test item is insoluble or only poorly soluble in water. A suitable selective and sensitive chromatographical method for the determination of the test item in aqueous solutions could not be established. Therefore an accompanying analysis by means of a chromatographical method could not be performed. The quantification of the test item was performed by DOC determination.