Sodium fluoride
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| Sodium fluoride | |
|---|---|
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| IUPAC name | Sodium fluoride |
| Identifiers | |
| CAS number | |
| Properties | |
| 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 |
| Hazards | |
| EU classification | Toxic (T) |
| NFPA 704 |
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| R-phrases | R25, R32, R36, R38 |
| S-phrases | S22, S36, S45 |
| Flash point | Non-flammable. |
| Related Compounds | |
| Other anions | sodium chloridesodium bromidesodium iodide |
| Other cations | potassium fluoride calcium fluoride caesium 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, 100 kPa) Infobox disclaimer and references | |
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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.
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.[1] 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
- Fluorine
- Water fluoridation
- Fluoride poisoning
- Caries
- Osteoporosis
- Insecticide
- Cryolite
- Light metals
References
External links
- Sodium Fluoride at chemistry.org (American Chemical Society)
- Chemical Profile for Sodium Fluoride (CAS Number: 7681-49-4) at Scorecard, the pollution information site
Stomatological preparations (A01) | |
|---|---|
| Caries prophylactic agents | Sodium fluoride - Sodium monofluorophosphate - Olaflur - Stannous fluoride |
| Anti-infectives and antiseptics | 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 |
| Corticosteroids | Triamcinolone - Dexamethasone - Hydrocortisone |
| Other | Epinephrine/Adrenalone - Benzydamine - Acetylsalicylic acid - Amlexanox |
it:Fluoruro di sodio hu:Nátrium-fluorid nl:Natriumfluoride ja:フッ化ナトリウムfi:Natriumfluoridi
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
