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#f30;"></span></p><p><span>產品關鍵詞：</span>鎮(zhèn)江2-甲基四氫呋喃咨詢電話,2-甲基四氫呋喃</p><p><span>***更新：</span>2020-10-25 03:23:50</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="wvcgszb" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海蔚云化工有限公司</a></p><p><span>聯(lián)系人：</span>盛志華</p><p><span>郵箱: </span>3273929241@qq.com</p><p><span>電話: </span>18721726651</p><p><span>傳真: </span>021_</p><p><span>網址: </span>http://www.weiyunhuagong.com</p><p><span>手機: </span>021-52909928</p><p><span>地址: </span>靜安區(qū)靈石路709號55幢A2113室</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="fe3pkmo" class="page-proshow02"><p class="title">詳細說明</p><div id="mbnkr2c" class="box"><p><p style="text-indent:25px">試劑和儀器，試劑：所用試劑均為分析純試劑；儀器：循環(huán)水泵、電動攪拌器、旋轉蒸發(fā)儀、反應精餾裝置、GC-2010 Plus氣相色譜儀，GCMS-QP 2010 SE氣質聯(lián)用儀。固體酸催化劑的制備，在三口燒瓶上裝上高速攪拌器、溫度計，加入一定量飽和氯化鈉水溶液，加入明膠、聚乙烯醇作為分散劑。開啟攪拌，分散劑均勻分散后，稱量摩爾比為5:1的鄰氯苯乙烯和二乙烯基苯，再取定量液體石臘作為致孔劑和過氧化苯甲酰作為引發(fā)劑加入反應器中，升溫開始反應，75℃保持12小時。反應中監(jiān)控油珠分散情況，隨時調整攪拌速度以控制油珠分散度和顆粒大小。反應結束后緩慢冷卻、過濾，以熱水洗滌并烘干。用石油醚萃取致孔劑，篩分出直徑0.5~0.7mm的樹脂骨架，以二氯乙烷溶脹。溶脹完成后，在良好攪拌下加入定量濃硫酸，鎮(zhèn)江2-甲基四氫呋喃咨詢電話，升溫回流并保持5小時。蒸出二氯乙烷，加入定量發(fā)煙硫酸，升溫至110℃反應，鎮(zhèn)江2-甲基四氫呋喃咨詢電話。反應過程中定時取樣，測定樹脂交換量，達到預定值后結束反應，鎮(zhèn)江2-甲基四氫呋喃咨詢電話，降溫。以蒸餾水小心的洗滌樹脂至洗液中性，自然晾干。儲存于陰涼、通風的庫房。鎮(zhèn)江2-甲基四氫呋喃咨詢電話</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鎮(zhèn)江2-甲基四氫呋喃咨詢電話,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623944439837/8611025.png"></div><p style="text-indent:25px">幾種溶解性能良好的化工溶劑,被稱為都能溶劑.二甲基亞砜普遍用作溶劑和反應試劑,特別是丙烯腈聚合反應中作加工溶劑和抽絲溶劑,作聚氨酯合成及抽絲溶劑,作聚酰胺,聚酰亞胺和聚砜樹脂的合成溶劑,以及芳烴,丁二烯抽提溶劑和合成氯氟苯胺的溶劑等.四氫呋喃具有低毒、低沸點、流動性好等特點,是一種重要的有機合成原料和優(yōu)良的溶劑,具有普遍的用途,四氫呋喃對許多有機物有良好的溶解性,它能溶解除聚乙烯,聚丙烯及氟樹脂以外的所有有機化合物,特別是對聚氯乙烯,聚偏氯乙烯,和叮苯胺有良好的溶解作用,有都能溶劑之稱。鎮(zhèn)江2-甲基四氫呋喃咨詢電話2-甲基四氫呋喃沸點較高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鎮(zhèn)江2-甲基四氫呋喃咨詢電話,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623961490638/1355180.png"></div><p style="text-indent:25px">甲基，化學式為-CH?，由碳和氫元素組成。甲烷分子中去掉一個氫原子后剩下的電中性的一價基團。甲基作為一個化學基團，它能夠結合在DNA上某些特定部位，這個甲基和DNA結合過程叫甲基化，相反，從化合物上脫落的過程叫去甲基化。甲基常出現(xiàn)在各種有機化合物中,是較常見的基團。由于甲基是合成蛋氨酸、肉堿、肌酸、磷脂、腎上腺素，核糖核酸和脫氧核糖核酸等具有主要生理作用的物質所必需的基團，以及甲基化反應在神經系統(tǒng)、免疫系統(tǒng)、泌尿系統(tǒng)和心血管系統(tǒng)中所起的作用，人們認為生長期動物和成年動物都需要穩(wěn)定的甲基供體。一般認為動物體內自身不能合成甲基，需要食物中具有富含甲基物質，它們的分子中具有易反應的甲基，從而參與動物生理功能，這類富含甲基的物質稱為“甲基供體”,易參與此反應的甲基,是與氮原子或硫原子連在一起的甲基，象甜菜堿、蛋氨酸、膽堿等。</p><p style="text-indent:25px">四氫呋喃與水能混溶，并常含有少量水分及過氧化物。如要制得無水四氫呋喃，可用氫化鋁鋰在隔絕潮氣下回流（通常1000mL約需2~4g氫化鋁鋰）除去其中的水和過氧化物，然后蒸餾，收集66℃的餾分蒸餾時不要蒸干，將剩余少量殘液即倒出Chemicalbook）。精制后的液體加入鈉絲并應在氮氣氛中保存。處理四氫呋喃時，應先用小量進行試驗，在確定其中只有少量水和過氧化物，作用不致過于激烈時，方可進行純化。四氫呋喃中的過氧化物可用酸化的碘化鉀溶液來檢驗。如過氧化物較多，應另行處理為宜。HF是一種重要的有機合成原料且是性能優(yōu)良的溶劑，特別適用于溶解PVC、聚偏氯乙烯和丁苯胺，普遍用作表面涂料、防腐涂料、印刷油墨、磁帶和薄膜涂料的溶劑，并用作反應溶劑，用于電鍍鋁液時可任意控制鋁層厚度且光亮。四氫呋喃是芳香族化合物呋喃的完全氫化產物。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鎮(zhèn)江2-甲基四氫呋喃咨詢電話,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624064664530/9526363.png"></div><p style="text-indent:25px">2-甲基四氫呋喃是一種有機化合物，分子式是C5H10O。外觀與性狀：透明,無色液體，密度：0.86 g/mL at 25 °C。熔點：-136 °C 凝固點：-136℃。沸點：78-80 °C，折射率：n** 1.406。儲存條件：庫房通風低溫干燥,與氧化劑、酸類分開存放。由2-甲基呋喃催化加氫而得。當催化加氫反應采用氯化鈀催化劑時,主要的產品是乙酰丙醇(見00420),但也可回收得到副產品2-甲基四氫呋喃。本品主要用作樹脂、橡膠、乙基纖維素等的溶劑；用它提取脂肪族酸類，要比一般所用的低沸點溶劑好，在鈾的冶煉工業(yè)上也相當重要。在制藥工業(yè)中可合成抗痔藥磷酸伯氨奎、磷酸氯喹等。甲基四氫呋喃容易冷凝回收，揮發(fā)損失少，大氣污染小。泰州2-甲基四氫呋喃是做什么用的</p><p style="text-indent:25px">四氫呋喃并用于天然氣加味。鎮(zhèn)江2-甲基四氫呋喃咨詢電話</p><p style="text-indent:25px">應用實例：鹽酸曲馬多合成中的應用鹽酸曲馬多，在抗HIV藥替普那韋合成中的應用替普那韋，在血管緊張素轉化酶控制劑馬來酸依那普利合成中的應用馬來酸依那普利，在抗***藥氟康唑合成中的應用氟康唑，在抗藥三尖杉酯堿合成中的應用，在抗抑郁藥鹽酸安非他酮合成中的應用芳樟醇芳香酮，在芳樟醇/香酮合成中的應用，在農藥草銨膦合成中的應用，在聯(lián)苯醇的合成中應用。 MeTHF凝固點為-136℃，因而它可以替代THF用于低溫下有機鋰反應。在有機鋰化學中，使用MeTHF作溶劑與THF相比，不僅分離方便，而且所得的鋰。鎮(zhèn)江2-甲基四氫呋喃咨詢電話</p><p style="text-indent:25px">上海蔚云化工有限公司致力于化工，以科技創(chuàng)新實現(xiàn)***管理的追求。上海蔚云化工作為化工產品（除危險化學品、監(jiān)控化學品、煙花爆竹、民用物品、易制毒化學品）、化工機械設備及配件的銷售，在化工技術領域內從事技術開發(fā)、技術轉讓、技術服務、技術咨詢。【依法須經批準的項目，經相關部門批準后方可開展經營活動】的企業(yè)之一，為客戶提供良好的環(huán)戊酮，甲基異丙基酮，丙二胺，二甘醇胺。上海蔚云化工始終以本分踏實的精神和必勝的信念，影響并帶動團隊取得成功。上海蔚云化工始終關注自身，在風云變化的時代，對自身的建設毫不懈怠，高度的專注與執(zhí)著使上海蔚云化工在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1696308.html</p></div></div></div></div></div><div id="ihjlc33" class="page-right twoColRt"><div id="f7xjvce" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="cmjbdpr" class="recomPic likePro"><a 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