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Ecotoxicological information

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Short-term aquatic toxicity testing on the substance was conducted in fish (one test on the rainbow trout,Oncorhynchus mykiss)and aquatic invertebrates (two tests on the water flea Daphnia magna).   An algal growth inhibition assay (Selenastrum capricornutum, also called Pseudokirchneriella subcapitata) and an activated sludge respiration inhibition test (ASRIT) were conducted on the substance.  Aquatic invertebrates were identified as the most sensitive trophic level; the geometric mean of the EC50 values from the two studies in D. magna was determined to be 6.13 µg/L. The ErC50in algae and LC50 in fish were reported at higher values of 26.9 µg/L and 160 µg/L, respectively; the EC50 from the ASRIT was substantially higher at 20,700 µg/L (= 20.7 mg/L). Long-term testing in fish and invertebrates was not conducted; the substance is soluble in water, and has been shown to be rapidly degraded in the environment. The results of the chemical safety assessment showed that the risk characterization ratios for surface water are all below one. Therefore, long-term aquatic toxicity testing was not indicated.