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Sodium tetrafluoroborate

|Sodium fluoroborate |Borate(1-), tetrafluoro-, sodium

| NFPA-F = 0 | NFPA-H = 3 | NFPA-R = 0 | NFPA-S = - |TLV-TWA=

Sodium tetrafluoroborate is an inorganic compound with formula . It is a salt that forms colorless or white rhombic crystals.

Sodium tetrafluoroborate is used in some fluxes used for brazing and to produce boron trifluoride.

Preparation

Sodium tetrafluoroborate can be prepared by neutralizing tetrafluoroboric acid with sodium carbonate or sodium hydroxide. : :

Alternatively the chemical can be synthesized from boric acid, hydrofluoric acid, and sodium carbonate:

:

Reactions and uses

On heating to its melting point, sodium tetrafluoroborate decomposes to sodium fluoride (NaF) and boron trifluoride ():

:

It is a source of tetrafluoroborate anion, which is used in organic chemistry for the preparation of salts. Sodium tetrafluoroborate can be used for synthesis of ionic liquids, where tetrafluoroborate is the anion.

References

References

  1. (2005-07-11). "Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and Properties". John Wiley & Sons.
  2. {{Sigma-Aldrich
  3. (26 March 2024). "SDS - Sodium tetrafluoroborate". ThermoFisher Scientific.
  4. Kwasnik, W.. "Handbook of Preparative Inorganic Chemistry Vol. 1, 2nd Ed.". Academic Press.
  5. (1994). "Concise Encyclopedia Chemistry". Walter de Gruyter.
  6. (2008-07-14). "Hazardous Chemicals Desk Reference". Wiley.
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sodium-compounds tetrafluoroborates brazing-and-soldering
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