Sodium tetrafluoroborate

<h2 id="preparation">Preparation</h2>
<p>Sodium tetrafluoroborate can be prepared by neutralizing <a href="/facts/Tetrafluoroboric_acid/fGEUfXpQ">tetrafluoroboric acid</a> with <a href="/facts/Sodium_carbonate/P6RHvIoK">sodium carbonate</a> or <a href="/facts/Sodium_hydroxide/xjtdYtq7">sodium hydroxide</a>.<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a>
</p>
NaOH + HBF4 →   NaBF4  +  H2O
Na2CO3  +  2 HBF4  →  2 NaBF4  +  H2O  +  CO2
<p>Alternatively the chemical can be synthesized from <a href="/facts/Boric_acid/0so68XIK">boric acid</a>, <a href="/facts/Hydrofluoric_acid/wdXqu4bE">hydrofluoric acid</a>, and sodium carbonate:<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a>
</p>
2H3BO3 + 8HF + Na2CO3 → 2NaBF4 + 7H2O + CO2
<h2 id="reactions-and-uses">Reactions and uses</h2>
<p>On heating to its melting point, sodium tetrafluoroborate decomposes to <a href="/facts/Sodium_fluoride/HHcvwK7s">sodium fluoride</a> and <a href="/facts/Boron_trifluoride/2qa0NIH8">boron trifluoride</a>:<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a>
</p>
NaBF4   →   NaF  +  BF3
<p>It is a source of <a href="/facts/Tetrafluoroborate/46EEToo6">tetrafluoroborate</a> anion, which is used in <a href="/facts/Organic_chemistry/djxhxaNg">organic chemistry</a> for the preparation of salts.  Sodium tetrafluoroborate can be used for synthesis of <a href="/facts/Ionic_liquid/Ypse8taj">ionic liquids</a>, where tetrafluoroborate is the anion.
</p>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>Milne, G. W. A (2005-07-11). Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and Properties. John Wiley & Sons. ISBN 9780471735182. <a href="9780471735182" target="_blank">9780471735182</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
<li id="fn:2"><p>Brauer, Georg (1963). Handbook of Preparative Inorganic Chemistry Vol. 1, 2nd Ed. New York: Academic Press. p. 220 & 222. ISBN 978-0121266011. {{cite book}}: ISBN / Date incompatibility (help) <a href="978-0121266011" target="_blank">978-0121266011</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li>
<li id="fn:3"><p>Eagleson, Mary (1994). Concise Encyclopedia Chemistry. Walter de Gruyter. ISBN 9783110114515. <a href="9783110114515" target="_blank">9783110114515</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li>
<li id="fn:4"><p>Brauer, Georg (1963). Handbook of Preparative Inorganic Chemistry Vol. 1, 2nd Ed. New York: Academic Press. p. 220 & 222. ISBN 978-0121266011. {{cite book}}: ISBN / Date incompatibility (help) <a href="978-0121266011" target="_blank">978-0121266011</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li>
<li id="fn:5"><p>Richard J. Lewis, Sr (2008-07-14). Hazardous Chemicals Desk Reference. Wiley. ISBN 9780470334454. <a href="9780470334454" target="_blank">9780470334454</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li>
</ol>

Sodium tetrafluoroborate open-in-new

Sodium tetrafluoroborate