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color=#136ec2><strong>發煙硫酸</strong></font></a>產品成分信息：</p><p>發煙硫酸是生產硫酸的過程中的生成物。性質不穩定，遇水會反應生成硫酸。發煙硫酸可以看成是濃度超過100%的硫酸，空氣中揮發出SO3并形成酸霧而發煙（就好像超過68%的硝酸由于酸霧叫做發煙硝酸一樣）。通常發煙硫酸的含量是根據其中的三氧化硫含量來計算的，如20%發煙硫酸表示其質量中有20%為三氧化硫。H2SO4·xSO3中，x=1時為焦硫酸。一般含SO3的質量分數有20%、40%、60%、66%等。若折合成硫酸的濃度則發煙硫酸中H2SO4可超過100%。有人認為發煙硫酸中主要含焦硫酸（H2S2O7）。具強氧化性和吸水性，脫水性及腐蝕性。用于合成染料、藥物。發煙硫酸常被用于磺化反應，不僅是因為濃度高，還因為發煙硫酸中含有較多的親電試劑三氧化硫。此外還常用做吸水及脫水劑。</p><p>發煙硫酸中的物質成分復雜，除了硫酸和三氧化硫外，還有焦硫酸（H2S2O7）、二聚硫酸（H4S2O8）三聚硫酸（H6S3O12）及H4S3O15、H2S3O10、（H2SO4）20等各種各樣的硫酸聚合物</p><p style="text-align: center;"><img src="/data/upload/image/20170410/1491824868980510.png" title="發煙硫酸" alt="發煙硫酸" width="458" height="320" border="0" vspace="0" style="width: 458px; height: 320px;"/></p></div> <h3 class="tag">相關標簽：<a href="http://www.7777ddd.com/tag/%E5%8F%91%E7%83%9F%E7%A1%AB%E9%85%B8">發煙硫酸</a> </h3> <div class="page">上一篇：<a href="http://www.7777ddd.com/news/348.html">工業級硫酸產品技術要求</a><br />下一篇：<span><a href="http://www.7777ddd.com/news/350.html">高濃度硫酸產品性質</a></span></div> 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