Registration Dossier
Registration Dossier
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EC number: 231-667-8 | CAS number: 7681-49-4
Sediment toxicity
Administrative data
Link to relevant study record(s)
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.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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