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Ecotoxicological information

Long-term toxicity to fish

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Description of key information

A 21-day study in Oncoryhychus mykiss with sodium fluoride is reviewed in the EU RAR and fluoride ICD (RIVM).

Key value for chemical safety assessment

EC10, LC10 or NOEC for freshwater fish:
4 mg/L

Additional information

In a 21 day test with Oncorhynchus mykiss, an LC5 value of 4 mg/L was reported (actual concentration). This value is considered to be equivalent to the NOEC for mortality. The test was conducted in very soft (12 mg CaCO3/L) natural water with daily renewal of the test water.