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Reliable acute toxicity tests results are available for freshwater fish (Oncorhynchus mykiss), invertebrates (Daphnia magna) and algae (Pseudokirchnerella subcapitata). LC50 or EC50 values for the three organisms expressed in terms of nominal concentrations were >100, >100 and >100 mg/L respectively. A NOEC of ≥100 mg/L was determined in the algal test. It is likely that under the test conditions the test organisms were primarily exposed to the hydrolysis products of the substance.