<p><b>氟硼酸鉀</b>（化學式：KBF<sub>4</sub>）別名<b>硼氟化鉀</b>及<b>四氟合硼酸鉀</b>，是氟硼酸的鉀鹽。微溶於水，溶解度4.4 g/L (20℃)，不溶於冷乙醇及鹼溶液，可微溶於熱乙醇。
</p><p>氟硼酸鉀的製備可由氫氟酸與硼酸作用後，再用氫氧化鉀中和而得。氟硼酸鉀可做為焊接時的助熔劑。
</p>
<h2><span id=".E5.8F.82.E8.80.83.E6.96.87.E7.8C.AE"></span><span id="参考文献">參考文獻</span></h2>

<!-- 
NewPP limit report
Parsed by mw2318
Cached time: 20230505141124
Cache expiry: 1814400
Reduced expiry: false
Complications: []
CPU time usage: 0.225 seconds
Real time usage: 0.447 seconds
Preprocessor visited node count: 3770/1000000
Post‐expand include size: 76063/2097152 bytes
Template argument size: 8550/2097152 bytes
Highest expansion depth: 31/100
Expensive parser function count: 9/500
Unstrip recursion depth: 0/20
Unstrip post‐expand size: 407/5000000 bytes
Lua time usage: 0.038/10.000 seconds
Lua memory usage: 1986194/52428800 bytes
Number of Wikibase entities loaded: 0/400
--><!--
Transclusion expansion time report (%,ms,calls,template)
100.00%  280.999      1 -total
 76.37%  214.595      1 Template:Chembox
 45.60%  128.126     66 Template:Chembox_entry
 38.84%  109.126      1 Template:Chembox_NameEn
 38.11%  107.098      1 Template:Lang
 36.90%  103.697      1 Template:Category_handler
 32.30%   90.755      1 Template:Category_handler/numbered
 31.60%   88.797      1 Template:Namespace_detect
 30.87%   86.751      1 Template:Str_mid
 29.85%   83.882      1 Template:Str_mid/core
-->
**氟硼酸鉀**（化學式：KBF4）別名**硼氟化鉀**及**四氟合硼酸鉀**，是氟硼酸的鉀鹽。微溶於水，溶解度 4.4 g/L (20℃)，不溶於冷乙醇及鹼溶液，可微溶於熱乙醇。

氟硼酸鉀的製備可由氫氟酸與硼酸作用後，再用氫氧化鉀中和而得。氟硼酸鉀可做為焊接時的助熔劑。

## 參考文獻
14075-53-7