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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

NOEC (3h) = 180 mg/L for activated sludge (OECD 209)
EC50 (3h) = 513 mg/L for activated sludge (OECD 209)

Key value for chemical safety assessment

EC50 for microorganisms:
513 mg/L
EC10 or NOEC for microorganisms:
180 mg/L

Additional information

The toxicity of Sodium methyl cocoyl taurate to aquatic microorganisms was determined according to the principles of OECD 209 (Fiebig, 2012). Test system was activated sludge of a municipal treatment plant. The test was carried out under static conditions with the following test substance concentrations 100, 180, 320, 560 and 1000 mg/L. The respiration rates of the control, reference and test item replicates were measured after a contact time of three hours. The NOEC andEC50 of the test item Sodium methyl cocoyl taurate was determined as 180 mg/L and 513 mg/L, respectively.