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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

EC50(48h) = 4.6 mg/L for Daphnia magna (OECD 202)

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
4.6 mg/L

Additional information

The acute toxicity of the test item Sodium methyl cocoyl taurate to Daphnia magna was determined according to OECD-Guideline 202 (Vryenhoef, 2012). The semi-static test was conducted with nominal test item concentrations of 0, 1.0, 1.8, 3.2, 5.6, 10, 18, 32, 56 and 100 mg/L for 48 hours. Five test organisms were exposed to each test concentration in four parallels. Water quality parameters such as temperature, pH-value and O2-saturation were determined to be within the acceptable limits. Analysis of the test preparations at 0 and 24 hours and at 24 and 48 hours showed measured test concentrations in the range of 83% to 106% of nominal. Consequently, the results were based on nominal test concentrations. The EC50 after 48 hours was calculated as 4.6 mg/L (nominal).