Sodium tetrafluoroborate: Difference between revisions

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Updating {{chembox}} (no changed fields - added verified revid - updated 'ChemSpiderID_Ref', 'DrugBank_Ref', 'UNII_Ref', 'ChEMBL_Ref', 'ChEBI_Ref', 'KEGG_Ref', 'StdInChI_Ref', 'StdInChIKey_Ref', 'ChEBI_Ref') per [[WP:CHEMVALID|Chem/Drugbox validation
Used lowercase "cite" template everywhere for consistency.
 
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{{chembox
{{chembox
| Verifiedfields = changed
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| verifiedrevid = 435209329
| Watchedfields = changed
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| verifiedrevid = 451980637
| ImageFileL1 = Sodium-3D.png
| ImageFileL1 = Sodium-3D.png
| ImageSizeL1 = 90px
| ImageNameL1 = The sodium cation
| ImageNameL1 = The sodium cation
| ImageFileR1 = Tetrafluoroborate-ion-3D-balls.png
| ImageFileR1 = Tetrafluoroborate-ion-3D-balls.png
| ImageSizeR1 = 110px
| ImageNameR1 = The tetrafluoroborate anion (ball-and-stick model)
| ImageNameR1 = The tetrafluoroborate anion (ball-and-stick model)
| OtherNames = sodium fluoroborate, NaBF4
| OtherNames = sodium fluoroborate, NaBF4
| Section1 = {{Chembox Identifiers
| Section1 = {{Chembox Identifiers
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo = 13755-29-8
| CASNo = 13755-29-8
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = CFC805A5WR
| PubChem = 4343483
| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}
| ChemSpiderID = 24462
| InChI = 1S/BF4.Na/c2-1(3,4)5;/q-1;+1
| SMILES = [B-](F)(F)(F)F.[Na+]
}}
}}
| Section2 = {{Chembox Properties
| Section2 = {{Chembox Properties
| Formula = NaBF<sub>4</sub>
| Formula = NaBF<sub>4</sub>
| MolarMass = 109.79
| MolarMass = 109.794 g/mol
| MeltingPt = 384 °C
| MeltingPtC = 384
| BoilingPt =
| BoilingPt =
| Density = 2.47 g/cm<sup>3</sup>
}}
}}
| Section3 = {{Chembox Hazards
| Section3 = {{Chembox Hazards
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'''Sodium tetrafluoroborate''', also called '''sodium borofluoride''', is a [[Compound (chemistry)|compound]] with formula NaBF<sub>4</sub>. It forms colorless water-soluble [[rhombic]] crystals and is soluble in water (108 g/100 ml) and less soluble in organic solvents.<ref>{{Kirjaviite | Tekijä = George W. A. Milne | Nimeke =Gardner's commercially important chemicals | Vuosi =2005 |Sivu =564 |Julkaisija =John Wiley and Sons | Tunniste = ISBN 978-0-471-73518-2 | www =http://books.google.fi/books?id=oWdc2qcb3QsC&pg=PA564&dq=Sodium+tetrafluoroborate&cd=5#v=onepage&q=Sodium%20tetrafluoroborate&f=false | www-teksti =Kirja Googlen teoshaussa | Viitattu =16.01.2010 | Kieli ={{en}}}}</ref>
'''Sodium tetrafluoroborate''' is an [[inorganic compound]] with formula NaBF<sub>4</sub>. It is a salt that forms colorless or white water-soluble [[rhombic crystal system|rhombic]] crystals and is soluble in water (108 g/100 mL) but less soluble in organic solvents.<ref>{{cite book | url = https://books.google.com/books?id=oWdc2qcb3QsC&q=Sodium+tetrafluoroborate&pg=PA564 | title = Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and Properties | isbn = 9780471735182 | last1 = Milne | first1 = G. W. A | date = 2005-07-11| publisher = John Wiley & Sons }}</ref>


Sodium tetrafluoroborate is used in some [[flux (metallurgy)|fluxes]] used for [[brazing]] and to produce [[boron trifluoride]].<ref name="Georg">{{cite book|last=Brauer|first=Georg|title=Handbook of Preparative Inorganic Chemistry Vol. 1, 2nd Ed.|date=1963|publisher=Academic Press|location=New York|isbn=978-0121266011|page=220 & 222|url=https://books.google.com/books?id=TLYatwAACAAJ&q=Handbook+of+Preparative+Inorganic+Chemistry}}</ref>
It is a source of [[tetrafluoroborate]] anion. It is used in [[organic chemistry]] for [[fluorination]] reactions and as a [[catalyst]], and for lab-scale preparation of [[boron trifluoride]].


==Preparation==
Sodium tetrafluoroborate is used in some [[flux (metallurgy)|fluxes]] used for [[brazing]].
Sodium tetrafluoroborate can be prepared by neutralizing [[tetrafluoroboric acid]] with [[sodium carbonate]] or [[sodium hydroxide]].<ref name ="concise">{{cite book | url = https://books.google.com/books?id=Owuv-c9L_IMC&q=Sodium+tetrafluoroborate&pg=PA1001 | title = Concise Encyclopedia Chemistry | isbn = 9783110114515 | last1 = Eagleson | first1 = Mary | year = 1994| publisher = Walter de Gruyter }}</ref>
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:NaOH + HBF<sub>4</sub> → NaBF<sub>4</sub> + H<sub>2</sub>O
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:Na<sub>2</sub>CO<sub>3</sub> + 2 HBF<sub>4</sub> → 2 NaBF<sub>4</sub> + H<sub>2</sub>O + CO<sub>2</sub>


Alternatively the chemical can be synthesized from [[boric acid]], [[hydrofluoric acid]], and sodium carbonate:<ref name="Georg" />


⚫
:2H<sub>3</sub>BO<sub>3</sub> + 8HF + Na<sub>2</sub>CO<sub>3</sub> → 2NaBF<sub>4</sub> + 7H<sub>2</sub>O + CO<sub>2</sub>
Sodium tetrafluoroborate can be prepared by neutralizing [[tetrafluoroboric acid]] with [[sodium carbonate]] or [[sodium hydroxide]]. <ref name ="concise">{{Kirjaviite | Tekijä =Thomas Scott, Mary Eagleson | Nimeke =Concise encyclopedia chemistry | Vuosi =1994 |Sivu =1001 |Julkaisija =Walter de Gruyter | Tunniste = ISBN 978-3110114515 | www =http://books.google.fi/books?id=Owuv-c9L_IMC&pg=PA1001&dq=Sodium+tetrafluoroborate&lr=&cd=19#v=onepage&q=Sodium%20tetrafluoroborate&f=false | www-teksti =Kirja Googlen teoshaussa | Viitattu =16.01.2010 | Kieli ={{en}}}}</ref>
⚫
:Na<sub>2</sub>O + 2 HBF<sub>4</sub> → 2 NaBF<sub>4</sub> + H<sub>2</sub>O
⚫
:NaOH + HBF<sub>4</sub> → NaBF<sub>4</sub> + H<sub>2</sub>O
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:Na<sub>2</sub>CO<sub>3</sub> + 2 HBF<sub>4</sub> → 2 NaBF<sub>4</sub> + H<sub>2</sub>O + CO<sub>2</sub>


==Reactions and uses==
Sodium tetrafluoroborate can be used to prepare [[nitrosonium tetrafluoroborate]], an [[explosive]], by reacting with [[nitrogen(III) oxide]].<ref>http://books.google.fi/books?id=J55D3HcgPuoC&pg=PA76&dq=%22Sodium+tetrafluoroborate%22&hl=fi&ei=TNCoTZbDIov3sgbc5aWXCA&sa=X&oi=book_result&ct=result&resnum=5&ved=0CEcQ6AEwBA</ref>
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On heating to its melting point, sodium tetrafluoroborate decomposes to [[sodium fluoride]] and [[boron trifluoride]]:<ref>{{cite book | url = https://books.google.com/books?id=LkIWiNg4FGEC&q=%22Sodium+tetrafluoroborate%22&pg=PA1271 | title = Hazardous Chemicals Desk Reference | isbn = 9780470334454 | last1 = Richard J. Lewis | first1 = Sr | date = 2008-07-14| publisher = Wiley }}</ref>

:NaBF<sub>4</sub> → NaF + BF<sub>3</sub>
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On heating, sodium tetrafluoroborate decomposes to [[sodium fluoride]] and [[boron trifluoride]].<ref>http://books.google.fi/books?id=LkIWiNg4FGEC&pg=PA1271&dq=%22Sodium+tetrafluoroborate%22&hl=fi&ei=TNCoTZbDIov3sgbc5aWXCA&sa=X&oi=book_result&ct=result&resnum=6&ved=0CEwQ6AEwBQ</ref>
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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 liquid]]s, where tetrafluoroborate is the anion.

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Sodium tetrafluoroborate can be used for synthesis of [[ionic liquid]]s, where the tetrafluoroborate often plays the role of the product's anion.


==References==
==References==
<references/>
<references/>
{{sodium compounds}}
{{Tetrafluoroborates}}


[[Category:Tetrafluoroborates]]
[[Category:Tetrafluoroborates]]
[[Category:Sodium compounds]]
[[Category:Sodium compounds]]
[[Category:Brazing and soldering]]
[[Category:Brazing and soldering]]

[[ar:رباعي فلوروبورات الصوديوم]]
[[de:Natriumtetrafluoroborat]]
[[fi:Natriumtetrafluoroboraatti]]
[[vi:Natri tetrafloborat]]
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