<p><b>乙烯基乙炔</b>，結構式CH<sub>2</sub>＝CH－C≡CH。
</p>


<h2><span id=".E6.80.A7.E8.B4.A8"></span><span id="性质">性質</span></h2>
<p>無色氣體，具有類似乙炔的氣味。與空氣形成爆炸性混合物。在空氣中易氧化生成有機過氧化物，也易發生加成和聚合反應。
</p>
<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>由經預處理的乙炔在氯化亞銅和氯化銨鹽酸溶液作用下二聚而得。
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \ 2CH\!\equiv \!CH\ {\xrightarrow[{80\!-\!84^{o}C}]{cat.}}\ CH\!\equiv \!C\!-CH\!=\!CH_{2}}">
  <semantics>
    <mrow class="MJX-TeXAtom-ORD">
      <mstyle displaystyle="true" scriptlevel="0">
        <mtext> </mtext>
        <mn>2</mn>
        <mi>C</mi>
        <mi>H</mi>
        <mspace width="negativethinmathspace"></mspace>
        <mo>≡<!-- ≡ --></mo>
        <mspace width="negativethinmathspace"></mspace>
        <mi>C</mi>
        <mi>H</mi>
        <mtext> </mtext>
        <mrow class="MJX-TeXAtom-ORD">
          <munderover>
            <mo>→</mo>
            <mpadded width="+0.611em" lspace="0.278em" voffset="-.24em">
              <mrow class="MJX-TeXAtom-ORD">
                <mn>80</mn>
                <mspace width="negativethinmathspace"></mspace>
                <mo>−<!-- − --></mo>
                <mspace width="negativethinmathspace"></mspace>
                <msup>
                  <mn>84</mn>
                  <mrow class="MJX-TeXAtom-ORD">
                    <mi>o</mi>
                  </mrow>
                </msup>
                <mi>C</mi>
              </mrow>
            </mpadded>
            <mpadded width="+0.611em" lspace="0.278em" voffset=".15em">
              <mi>c</mi>
              <mi>a</mi>
              <mi>t</mi>
              <mo>.</mo>
            </mpadded>
          </munderover>
        </mrow>
        <mtext> </mtext>
        <mi>C</mi>
        <mi>H</mi>
        <mspace width="negativethinmathspace"></mspace>
        <mo>≡<!-- ≡ --></mo>
        <mspace width="negativethinmathspace"></mspace>
        <mi>C</mi>
        <mspace width="negativethinmathspace"></mspace>
        <mo>−<!-- − --></mo>
        <mi>C</mi>
        <mi>H</mi>
        <mspace width="negativethinmathspace"></mspace>
        <mo>=</mo>
        <mspace width="negativethinmathspace"></mspace>
        <mi>C</mi>
        <msub>
          <mi>H</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mn>2</mn>
          </mrow>
        </msub>
      </mstyle>
    </mrow>
    <annotation encoding="application/x-tex">{\displaystyle \ 2CH\!\equiv \!CH\ {\xrightarrow[{80\!-\!84^{o}C}]{cat.}}\ CH\!\equiv \!C\!-CH\!=\!CH_{2}}</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>用作製取氯丁橡膠、二乙烯基醚及以丁烯酮為基礎的多聚體的原料。
</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 mw1390
Cached time: 20230505230032
Cache expiry: 1814400
Reduced expiry: false
Complications: [show‐toc]
CPU time usage: 0.195 seconds
Real time usage: 0.314 seconds
Preprocessor visited node count: 3174/1000000
Post‐expand include size: 26538/2097152 bytes
Template argument size: 5849/2097152 bytes
Highest expansion depth: 31/100
Expensive parser function count: 8/500
Unstrip recursion depth: 0/20
Unstrip post‐expand size: 912/5000000 bytes
Lua time usage: 0.052/10.000 seconds
Lua memory usage: 1943888/52428800 bytes
Number of Wikibase entities loaded: 1/400
--><!--
Transclusion expansion time report (%,ms,calls,template)
100.00%  233.783      1 -total
 71.85%  167.963      1 Template:Chembox
 28.26%   66.068     66 Template:Chembox_entry
 25.57%   59.780      1 Template:Chembox_Identifiers
 20.18%   47.169      1 Template:Authority_control
 14.83%   34.680      1 Template:Chembox_NameEn
 14.29%   33.403      1 Template:Lang
 13.50%   31.569      1 Template:Category_handler
 12.16%   28.439      1 Template:Chembox_Properties
  9.87%   23.080      1 Template:Category_handler/numbered
-->
**乙烯基乙炔**，結構式 CH2＝CH－C≡CH。

## 性質

無色氣體，具有類似乙炔的氣味。與空氣形成爆炸性混合物。在空氣中易氧化生成有機過氧化物，也易發生加成和聚合反應。

## 製備

由經預處理的乙炔在氯化亞銅和氯化銨鹽酸溶液作用下二聚而得。

　
: $\ 2CH\!\equiv \!CH\ {\xrightarrow[{80\!-\!84^{o}C}]{cat.}}\ CH\!\equiv \!C\!-CH\!=\!CH_{2}$

## 用途

用作製取氯丁橡膠、二乙烯基醚及以丁烯酮為基礎的多聚體的原料。

## 參考資料
1-丁烯-3-炔