<p><b>草酸鈹</b>是一種無機化合物，化學式為<span>BeC<span><br>2</span>O<span><br>4</span></span>，是鈹的草酸鹽。它是無色晶體，可溶於水，可以形成水合物晶體。它經熱分解可以用來製備高純度的氧化鈹。</p>


<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>草酸鈹可由草酸和氫氧化鈹反應得到：</p>
<dl><dd><dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\mathsf {Be(OH)_{2}+H_{2}C_{2}O_{4}\ {\xrightarrow {}}\ BeC_{2}O_{4}+2H_{2}O}}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\mathsf {Be(OH)_{2}+H_{2}C_{2}O_{4}\ {\xrightarrow {}}\ BeC_{2}O_{4}+2H_{2}O}}}</annotation>
  </semantics></math></span></span></dd></dl></dd></dl><h2><span id=".E6.80.A7.E8.B4.A8"></span><span id="性质">性質</span></h2>
<p>草酸鈹的水合物加熱失水：
</p>
<dl><dd><dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\mathsf {BeC_{2}O_{4}\cdot 3H_{2}O\ {\xrightarrow[{-2H_{2}O}]{100^{o}C}}\ BeC_{2}O_{4}\cdot H_{2}O\ {\xrightarrow[{-H_{2}O}]{220^{o}C}}\ BeC_{2}O_{4}}}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\mathsf {BeC_{2}O_{4}\cdot 3H_{2}O\ {\xrightarrow[{-2H_{2}O}]{100^{o}C}}\ BeC_{2}O_{4}\cdot H_{2}O\ {\xrightarrow[{-H_{2}O}]{220^{o}C}}\ BeC_{2}O_{4}}}}</annotation>
  </semantics></math></span></span></dd></dl></dd></dl><p>需要指出的是，三水合物在50 °C便可緩慢失水，生成一水合物。</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>

<h2><span id=".E5.BB.B6.E4.BC.B8.E9.98.85.E8.AF.BB"></span><span id="延伸阅读">延伸閱讀</span></h2>
<ul><li><cite class="citation journal">Sidgwick, Nevil V.; Lewis, Neil B. CLXVI.—The solubility of beryllium oxide in solutions of its salts. J. Chem. Soc. 1926, <b>129</b> (0): 1287–1302. <span title="國際標準連續出版物號">ISSN 0368-1769</span>. <span title="數位物件識別號">doi:10.1039/JR9262901287</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E8%8D%89%E9%85%B8%E9%93%8D&amp;rft.atitle=CLXVI.%E2%80%94The+solubility+of+beryllium+oxide+in+solutions+of+its+salts&amp;rft.au=Lewis%2C+Neil+B.&amp;rft.aufirst=Nevil+V.&amp;rft.aulast=Sidgwick&amp;rft.date=1926&amp;rft.genre=article&amp;rft.issn=0368-1769&amp;rft.issue=0&amp;rft.jtitle=J.+Chem.+Soc.&amp;rft.pages=1287-1302&amp;rft.volume=129&amp;rft_id=info%3Adoi%2F10.1039%2FJR9262901287&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal"><span> </span></span></li></ul><!-- 
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**草酸鈹**是一種無機化合物，化學式為 BeC 
2O 
4，是鈹的草酸鹽。它是無色晶體，可溶於水，可以形成水合物晶體。它經熱分解可以用來製備高純度的氧化鈹。

## 製備

草酸鈹可由草酸和氫氧化鈹反應得到：

　
: : ${\mathsf {Be(OH)_{2}+H_{2}C_{2}O_{4}\ {\xrightarrow {}}\ BeC_{2}O_{4}+2H_{2}O}}$

## 性質

草酸鈹的水合物加熱失水：

　
: : ${\mathsf {BeC_{2}O_{4}\cdot 3H_{2}O\ {\xrightarrow[{-2H_{2}O}]{100^{o}C}}\ BeC_{2}O_{4}\cdot H_{2}O\ {\xrightarrow[{-H_{2}O}]{220^{o}C}}\ BeC_{2}O_{4}}}$

需要指出的是，三水合物在 50 °C 便可緩慢失水，生成一水合物。

## 參考文獻

## 延伸閱讀

* Sidgwick, Nevil V.; Lewis, Neil B. CLXVI.—The solubility of beryllium oxide in solutions of its salts. J. Chem. Soc. 1926, **129** (0): 1287–1302. ISSN 0368-1769. doi:10.1039/JR9262901287.
15697-24-2