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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Determination of the acute toxicity of FAT 40863/A TE to Daphnia magna.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
100 mg/L

Additional information

A study was performed to assess the acute toxicity of the test item toDaphnia magna. The method followed was designed to be compatible with the OECD Guidelines for Testing of Chemicals (April 2004) No 202, "Daphnia sp., Acute Immobilisation Test" referenced as Method C.2 of Commission Regulation (EC) No. 440/2008.

 

Following a preliminary range-finding test, twenty daphnids (4 replicates of 5 animals) were exposed to an aqueous solution of the test item at a concentration of 100 mg/L for 48 hours at a temperature of 20°C under static test conditions. Immobilization and any adverse reactions to exposure were recorded after 24 and 48 hours.

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Analysis of the test preparations at 0 and 48 hours showed measured test concentrations to be near nominal and so the results are based on nominal test concentrations only.

Exposure ofDaphnia magnato the test item gave an EC50value of greater than 100 mg/L. The No Observed Effect Concentration was 100 mg/L.

It was considered unnecessary and unrealistic to test at concentrations in excess of 100 mg/L.