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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

In this 48-hour acute toxicity test with Daphnia magna the 48 h EC50 value was determined as 81.0 mg/L, and the 48 h NOEC was determined to be 44.0 mg/L. The results are based on the measured geometric mean test item concentrations. 

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
81 mg/L

Additional information

An acute toxicity test on daphnia magna over an exposure period of 48 hours in a semi static system was assessed according to OECD Guideline 202 and EU method C.2. The purpose of this study was to evaluate the influence of the test item Sika Hardener MH on the mobility respectively survival of Daphnia magna. Young Daphnia were exposed using a nominal range of concentration of 19.8, 29.6, 44.4, 66.7 and 100.0 mg/L under semi-static conditions. The measured concentrations deviated more than 20 % from the nominal at some cases therefore the geometric mean of the measured concentrations were calculated in order to determine exposure concentrations. The corresponding calculated geometric mean concentrations were the followings:19.4, 29.2, 44.0, 63.3 and 98.5 mg/L. The 48 -h EC50 was determined to be 81.0 mg/L, and the 48 h NOEC was determined to be 44.0 mg/L. The results are based on the measured geometric mean test item concentrations.