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Ecotoxicological information

Sediment toxicity

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Description of key information

No data are available. 
Since sodium fluoride in water at environmentally relevant pH, will dissociate almost entirely to form sodium and fluoride ions which will combine with various minerals to form a variety of other fluoride compounds, it is believed that the only targeted compartment by fluoride is the water compartment.
Afterwards, fluoride is deposited to sediment as insoluble complexes and is essentially immobile in soil due to its incorporation into insoluble complexes.
Altogether these elements tend to prove that sediment toxicity to fluoride is not expected as no exposure to sodium fluoride is expected.

Key value for chemical safety assessment

Additional information

A waiver is proposed for this endpoint. In accordance with column 2 of REACH annex IX point 9.2.1 no Sediment simulation testing (for substances with a high potential for adsorption to sediment) shall be proposed by the registrant if direct and indirect exposure of sediment is unlikely.

So far, since sodium fluoride in water at environmentally relevant pH, will dissociate almost entirely to form sodiumm and fluoride ions which will combine with various minerals to form a variety of other fluoride compounds, it is believed that the only targeted compartment by fluoride is the water compartment.

Afterwards, fluoride is deposited to sediment as insoluble complexes and is essentially immobile in soil due to its incorporation into insoluble complexes.

Altogether these elements tend to prove that sediment toxicity to fluoride is not expected as no exposure to fluoride is expected.