Sodium fluoride Identifiers Properties Hazards
IUPAC name Sodium fluoride
CAS number 7681-49-4
Molecular formula NaF
Molar mass 41.99 g/mol
Appearance White solid
Density 2.558 g/cm³, solid
Melting point

993 °C

Boiling point

1700 °C

Solubility in water 4.13 g/100 g at 25 °C
EU classification Toxic (T)
NFPA 704
R-phrases R25, R32, R36, R38 S-phrases S22, S36, S45 Flash point Non-flammable.

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Related Compounds Other anions sodium chloridesodium bromidesodium iodide Other cations potassium fluoride calcium fluoridecaesium fluoride Related bases None listed. Related compounds TASF reagent Except where noted otherwise, data are given for materials in their standard state(at 25°C, 100kPa)Infobox disclaimer and references

Sodium fluoride is an ionic compound with the formula NaF. This colourless solid is the main source of the fluoride ion in diverse applications. NaF is less expensive and less hygroscopic than KF, but otherwise the potassium salt is more widely used.


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Chemical structure and properties

NaF crystallizes in the sodium chloride motif where both Na+ and F− occupy octahedral coordination sites.<1>

It is usually used as a reagent for the synthesis of fluorides. Representative substrates include electrophilic chlorides including acyl chlorides, sulfur chlorides, and phosphorus chloride.<2> Like other fluorides, NaF finds use in desilylation in organic synthesis.

Uses

Fluoride salts are used widely to enhance the strength of teeth by the formation of fluoroapatite, a naturally occurring component of tooth enamel. In the US, NaF was once used to fluoridate drinking water but its use has been displaced by hexafluorosilicic acid (H2SiF6) or its sodium salt (Na2SiF6). Toothpaste often contains sodium fluoride to prevent cavities.

Sodium fluoride was also used as an antibiotic, as rat poison, and in ceramics.

See also

CariesOsteoporosisInsecticide

References


v•d•e
Stomatological preparations (A01)Caries prophylactic agentsAnti-infectives and antisepticsCorticosteroidsOther
Sodium fluoride - Sodium monofluorophosphate - Olaflur - Stannous fluoride
Hydrogen peroxide - Chlorhexidine - Amphotericin B - Polynoxylin - Domiphen - Oxyquinoline - Neomycin - Miconazole - Natamycin - Hexetidine - Tetracycline - Benzoxonium chloride - Tibezonium iodide - Mepartricin - Metronidazole - Clotrimazole - Sodium perborate - Chlortetracycline - Doxycycline - Minocycline - Eugenol
Triamcinolone - Dexamethasone - Hydrocortisone
Epinephrine/Adrenalone - Benzydamine - Acetylsalicylic acid - Amlexanox

v•d•e
Mineral supplements (A12)CalciumPotassiumSodiumZincMagnesiumFluorideSelenium
Calcium phosphate - Calcium glubionate - Calcium gluconate - Calcium carbonate - Calcium lactate - Calcium lactate gluconate - Calcium chloride - Calcium glycerylphosphate - Calcium citrate lysine complex - Calcium glucoheptonate - Calcium pangamate
Potassium chloride - Potassium citrate - Potassium hydrogentartrate - Potassium hydrogencarbonate - Potassium gluconate
Sodium chloride - Sodium sulfate
Zinc sulfate - Zinc gluconate
Magnesium chloride - Magnesium sulfate - Magnesium gluconate - Magnesium citrate - Magnesium aspartate - Magnesium lactate - Magnesium levulinate - Magnesium pidolate - Magnesium orotate - Magnesium oxide
Sodium fluoride - Sodium monofluorophosphate
Sodium selenate - Sodium selenite

Categories: Fluorides | Metal halides | Sodium compounds | Inorganic compounds


This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sodium_fluoride". A list of authors is available in Wikipedia.
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