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EC number: 216-577-9 | CAS number: 1618-26-4
The purpose of this study was to evaluate the influence of the test item Bis(methyltio)methane on the mobility, respectively survival of Daphnia magna in a static test system. Young Daphnia were exposed in an immobilisation test to aqueous test media containing the test item at 6.25, 12.5, 25, 50 and 100 mg/L ((corresponding to 4.2, 7.9, 16.4, 34.0 and 67.8 mg/L (calculated geometric mean measured concentrations)). Twenty Daphnia, divided into four groups of five animals each were exposed to the test item concentrations or run as control for 48 hours. The 48-h EC50 value was determined to be 37.2 mg/L. The 48-h NOEC was determined to be 16.4 mg/L.
The 48-h EC50 value of the test item on Daphnia magna was determined to be 37.2 mg/L.
In the acute immobilisation test (reference 6.1.3-1) with Daphnia magna (STRAUS), the effects of the test item were determined according to OECD Guideline for testing of chemicals, Guideline No. 202, adopted 13th April 2004. The study was conducted in a static system over a period of 48 hours with nominal concentrations of 6.25, 12.5, 25, 50 and 100 mg/L (corresponding to geometric measured concentrations of 4.2, 7.9, 16.4, 34.0 and 67.8 mg/L). The validity criteria of the test guideline were fulfilled. The EC50 value (48 hours) was determined to be 37.2 mg/L (mean measured).
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