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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

The NOEC and LC0 were determined to be ≥100 mg/I, and the LOEC, LC50 and LC100 were determined to be >100 mg/I.

Key value for chemical safety assessment

Additional information

The substance was tested for its acute toxicity to the rainbow trout over a period of 96 hours in a static system. The study was performed according to the OECD Guideline No. 203 and the EEC Directive 92/69 Part C.1.

Based on the results of a range-finding test performed with test article concentrations of 100, 10 and 1.0 mg/l in a static system, a limit test was performed at a test article concentration of 100 mg/l in order to demonstrate that the LC50 is greater than this concentration. Untreated test medium was run in addition to the 100 mg/l test concentration as a control.

The 100 mg/l test concentration and the control were verified analytically by HPLC at the beginning and at the end of the limit test. Measured test article concentrations were 99.4 % of nominal at hour 0 and 97.6 % of nominal after 96 hours of exposure. Consequently, the biological data are expressed as nominal concentrations.

At the 100 mg/l test article concentration, as well as in the control no mortality of fish occurred during the 96-hour exposure period, and no sublethal effects were observed over the 96-hour exposure period. Therefore, the NOEC and LC0 were determined to be ≥ 100 mg/l, and the LOEC, LC50 and LC100 were determined to be >100 mg/l.