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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

LC50 (96h), NOEC and LOEC were 3.8 mg/L, 0.72 mg/L and 1.05 mg/L respectively based on the mortalities.

Key value for chemical safety assessment

LC50 for freshwater fish:
3.8 mg/L

Additional information

The concentration groups in the key study for acute fish toxicity study were set as 2.27, 2.73, 3.28, 3.93 and 4.72 mg/L at common ratio of 1.2 in the definitive test. No mortality was found in control groups. No mortality was found in 2.27, 2.73, 3.28 and 3.93 mg/L during 96h exposure as well. In 4.72 mg/L group, 2 dead fish after 24h and 48h were found and 3 dead fish were found after 72h. 6 dead fish were found after 96 exposure period.

Thus, LC50 (96h), NOEC and LOEC were 3.8 mg/L, 0.72 mg/L and 1.05 mg/L respectively based on the mortalities.

In a supportive acute fish toxicity study zebra-fish were exposed to 10, 18, 32, 58 and 100 mg/L nominal concentration for 96 hours. The LC50 in this study was established at 20.4 mg/L (nominal conc.) and the LC0 at 10 mg/L. However, as the nominal concentrations were not analytically verified and the substance was tested above water solubility limit (white precipitates were observed in test solutions) this study is of limited value for hazard and risk assessment.