<p><b>氯化錫（II）</b>，化學式SnCl<sub>2</sub>，為白色固體。
</p>
<h2><span id=".E8.A3.BD.E5.82.99"></span><span id="製備">製備</span></h2>
<p>將錫溶於濃鹽酸中，再將溶液蒸發，製得無色針狀結晶SnCl<sub>2</sub>‧2H<sub>2</sub>O。反應式：
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \ Sn+2HCl\to SnCl_{2}+H_{2}\uparrow }">
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  </semantics></math></span></span></dd></dl><h2><span id=".E6.80.A7.E8.B3.AA"></span><span id="性質">性質</span></h2>
<p>溶於水中則水解生成鹼式氯化亞錫[Sn(OH)Cl]的白色沉澱。反應式：
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \ SnCl_{2}+H_{2}O\to Sn(OH)Cl+HCl}">
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    <annotation encoding="application/x-tex">{\displaystyle \ SnCl_{2}+H_{2}O\to Sn(OH)Cl+HCl}</annotation>
  </semantics></math></span></span></dd></dl><p>但可完全溶解於酸性溶液之中，並能成功進行置換反應。
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \ SnCl_{2}(aq)+Zn\to Sn+ZnCl_{2}(aq)}">
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    <annotation encoding="application/x-tex">{\displaystyle \ SnCl_{2}(aq)+Zn\to Sn+ZnCl_{2}(aq)}</annotation>
  </semantics></math></span></span></dd></dl><p>在酸性環境下易氧化成氯化錫(IV)，為強還原劑。主要用作化學試劑、有機錫合成原料、電鍍塑料電鍍的敏化劑、香料的穩定劑、食品添加劑印染助劑、農藥中間體、有機合成催化劑等。
</p>
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**氯化錫（II）** ，化學式 SnCl2，為白色固體。

## 製備

將錫溶於濃鹽酸中，再將溶液蒸發，製得無色針狀結晶 SnCl2‧2H2O。反應式：

　
: $\ Sn+2HCl\to SnCl_{2}+H_{2}\uparrow $

## 性質

溶於水中則水解生成鹼式氯化亞錫 [Sn (OH) Cl] 的白色沉澱。反應式：

　
: $\ SnCl_{2}+H_{2}O\to Sn(OH)Cl+HCl$

但可完全溶解於酸性溶液之中，並能成功進行置換反應。

　
: $\ SnCl_{2}(aq)+Zn\to Sn+ZnCl_{2}(aq)$

在酸性環境下易氧化成氯化錫 (IV)，為強還原劑。主要用作化學試劑、有機錫合成原料、電鍍塑料電鍍的敏化劑、香料的穩定劑、食品添加劑印染助劑、農藥中間體、有機合成催化劑等。
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