<p><b>丙酸鈉</b>，化學式CH<sub>3</sub>CH<sub>2</sub>COONa。
</p>


<h2><span id=".E6.80.A7.E8.B4.A8"></span><span id="性质">性質</span></h2>
<p>白色透明有特異臭氣的顆粒或結晶，在濕空氣中潮解。易溶於水，微溶於醇。
</p>
<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>由丙酸與碳酸鈉反應而得。
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \ 2CH_{3}CH_{2}COOH+Na_{2}CO_{3}\rightarrow 2CH_{3}CH_{2}COONa+H_{2}O+CO_{2}\uparrow }">
  <semantics>
    <mrow class="MJX-TeXAtom-ORD">
      <mstyle displaystyle="true" scriptlevel="0">
        <mtext> </mtext>
        <mn>2</mn>
        <mi>C</mi>
        <msub>
          <mi>H</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mn>3</mn>
          </mrow>
        </msub>
        <mi>C</mi>
        <msub>
          <mi>H</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mn>2</mn>
          </mrow>
        </msub>
        <mi>C</mi>
        <mi>O</mi>
        <mi>O</mi>
        <mi>H</mi>
        <mo>+</mo>
        <mi>N</mi>
        <msub>
          <mi>a</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mn>2</mn>
          </mrow>
        </msub>
        <mi>C</mi>
        <msub>
          <mi>O</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mn>3</mn>
          </mrow>
        </msub>
        <mo stretchy="false">→<!-- → --></mo>
        <mn>2</mn>
        <mi>C</mi>
        <msub>
          <mi>H</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mn>3</mn>
          </mrow>
        </msub>
        <mi>C</mi>
        <msub>
          <mi>H</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mn>2</mn>
          </mrow>
        </msub>
        <mi>C</mi>
        <mi>O</mi>
        <mi>O</mi>
        <mi>N</mi>
        <mi>a</mi>
        <mo>+</mo>
        <msub>
          <mi>H</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mn>2</mn>
          </mrow>
        </msub>
        <mi>O</mi>
        <mo>+</mo>
        <mi>C</mi>
        <msub>
          <mi>O</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mn>2</mn>
          </mrow>
        </msub>
        <mo stretchy="false">↑<!-- ↑ --></mo>
      </mstyle>
    </mrow>
    <annotation encoding="application/x-tex">{\displaystyle \ 2CH_{3}CH_{2}COOH+Na_{2}CO_{3}\rightarrow 2CH_{3}CH_{2}COONa+H_{2}O+CO_{2}\uparrow }</annotation>
  </semantics></math></span></span></dd></dl><h2><span id=".E7.94.A8.E9.80.94"></span><span id="用途">用途</span></h2>
<p>用作食品和飲料防腐劑。
</p>
<h2><span id=".E5.8F.82.E8.80.83.E8.B5.84.E6.96.99"></span><span id="参考资料">參考資料</span></h2>

<!-- 
NewPP limit report
Parsed by mw1376
Cached time: 20230505230346
Cache expiry: 1814400
Reduced expiry: false
Complications: [show‐toc]
CPU time usage: 0.204 seconds
Real time usage: 0.323 seconds
Preprocessor visited node count: 3291/1000000
Post‐expand include size: 50620/2097152 bytes
Template argument size: 13858/2097152 bytes
Highest expansion depth: 16/100
Expensive parser function count: 8/500
Unstrip recursion depth: 0/20
Unstrip post‐expand size: 2391/5000000 bytes
Lua time usage: 0.033/10.000 seconds
Lua memory usage: 1497578/52428800 bytes
Number of Wikibase entities loaded: 0/400
--><!--
Transclusion expansion time report (%,ms,calls,template)
100.00%  218.144      1 -total
 74.72%  163.008      1 Template:Chembox
 32.08%   69.973      1 Template:Chembox_Identifiers
 13.94%   30.417      1 Template:丙酸盐
 13.59%   29.641      1 Template:Chembox_Hazards
 12.49%   27.253      1 Template:周期表框架
 12.18%   26.572     66 Template:Chembox_entry
 11.89%   25.938      1 Template:Chembox_Properties
 10.97%   23.926      1 Template:Navbox
 10.51%   22.927      1 Template:Reflist
-->
**丙酸鈉**，化學式 CH3CH2COONa。

## 性質

白色透明有特異臭氣的顆粒或結晶，在濕空氣中潮解。易溶於水，微溶於醇。

## 製備

由丙酸與碳酸鈉反應而得。

　
: $\ 2CH_{3}CH_{2}COOH+Na_{2}CO_{3}\rightarrow 2CH_{3}CH_{2}COONa+H_{2}O+CO_{2}\uparrow $

## 用途

用作食品和飲料防腐劑。

## 參考資料
137-40-6