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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

In a semi-static test  a LC50 of higher than 100 mg/l after 96 h was obtained for the test item against fish (Danio rerio). 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

LC50 for freshwater fish:
100 mg/L

Additional information

"Should read: > 100 mg/L"

Toxicity to fish was conducted in a study under semi static conditions in accordance with Council Regulation (EC) No 440/2008, Method C.1 which is in most parts equivalent to the OECD Guideline for Testing of Chemicals No. 203. A group of seven fish of the recommended size was exposed to a limit test concentration of nominally 100 mg/L of the test item dissolved in dilution water. Auxiliaries used to prepare the test media were a magnetic stirrer, folded filters and an aseptic filter of pore size 0.2 μm. Observations were made on the number of dead fish and the incidence of sub-lethal effects after 2, 24, 48, 72 and 96 hours of exposure. No toxic effects against fish were observed at a limit test concentration of 100 mg/L under exposure conditions. The quantification of the substance was performed by DOC determination.

The substance 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 substance was performed by DOC determination.