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class="proBig"><div id="vkmp3mo" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623961490638/1355180.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="fubyfmt" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623961490638/1355180.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="xmtq2iz" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>麗水2-甲基四氫呋喃價格是多少,2-甲基四氫呋喃</p><p><span>***更新：</span>2020-11-09 06:24:28</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="uo8zt8o" 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(wǎng)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(dāng)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="sh7i7av" class="page-proshow02"><p class="title">詳細說明</p><div id="7tnzbiz" class="box"><p><p style="text-indent:25px">二甲基亞砜除此之外,在醫(yī)藥工業(yè)中二甲基亞砜還有直接用作某些藥物的原料及載體.二甲基亞砜本身有***止痛,,等作用,亦譽為萬靈藥,常作為止痛藥物的活性組分添加于藥物之中. 四氫呋喃為常用有機溶劑,有都能溶劑之稱。四氫呋喃已普遍用于表面涂料,保護性涂料,油墨,萃取劑和人造革的表面處理，麗水2-甲基四氫呋喃價格是多少,四氫呋喃是生產(chǎn)聚四亞甲基醚二（PTMEG）重要原料，麗水2-甲基四氫呋喃價格是多少,也是制藥行業(yè)的主要溶劑. 乙酸異丙酯可以與醇、酮、醚等多數(shù)溶劑混溶,有都能溶劑之稱，麗水2-甲基四氫呋喃價格是多少,對多種合成樹脂及天然樹脂有優(yōu)良的溶解能力。四氫呋喃是一種無色、可與水混溶。麗水2-甲基四氫呋喃價格是多少</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="麗水2-甲基四氫呋喃價格是多少,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623961490638/1355180.png"></div><p style="text-indent:25px">工藝使用自制的陽離子交換樹脂作為固體酸催化劑，該款樹脂熱穩(wěn)定性高，高溫使用流失少，使用壽命長。反應(yīng)完成后，反應(yīng)液無催化劑殘留，后處理簡單，廢水排放少，環(huán)境友好。該工藝采用了反應(yīng)精餾的方式，反應(yīng)過程中產(chǎn)生的水被及時帶出反應(yīng)體系，促進酯化反應(yīng)平衡的右移，提高了原料的轉(zhuǎn)化率。該工藝采用了連續(xù)生產(chǎn)的方式，避免了大量的人工操作，產(chǎn)品質(zhì)量穩(wěn)定，有利于規(guī)?；a(chǎn)。以自制的固體酸催化合成TFA的工藝路線有較高的工業(yè)應(yīng)用價值，如能應(yīng)用于實踐將會產(chǎn)生良好的經(jīng)濟效益和社會效益。上海2-甲基四氫呋喃生產(chǎn)線甲基四氫呋喃容易冷凝回收，揮發(fā)損失少，大氣污染小。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="麗水2-甲基四氫呋喃價格是多少,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624097545321/7454619.png"></div><p style="text-indent:25px">2-甲基呋喃由鎳催化在150℃下進行加氫反應(yīng)即得粗品。經(jīng)脫水、精餾制得成品。另外，在生產(chǎn)乙酰正丙醇時可副產(chǎn)2一甲基四氫呋喃。2-甲基四氫呋喃作為一種環(huán)醚，也是一種路易斯堿，更是一種環(huán)境友好、性能優(yōu)良的獨特的溶劑。近幾年來，由于2-甲基四氫呋喃優(yōu)良的性能和環(huán)境友好的特點，使其在溶劑替代應(yīng)用領(lǐng)域得以迅速的的發(fā)展：用于替代安全隱患大的四氫呋喃、**等，用作格氏反應(yīng)溶劑；用于替代高毒性的鹵代烴類、苯類等作為有機合成的反應(yīng)溶劑或萃取溶劑；應(yīng)用于有機金屬反應(yīng)和兩相反應(yīng)的溶劑。14KPa下，以MeCO(CH2)nCH2Cl為原料與Bu3SnH反應(yīng)得到環(huán)醚，且產(chǎn)率與環(huán)的大小有關(guān)。當(dāng)n＝2時，所得2-甲基四氫呋喃的產(chǎn)率為98％。將RCH2CH2OCHR’CH2R(R＝Br，Cl；R’＝H，Me)在極性溶劑中用鋅粉、鉀汞齊或鋰汞齊的作用下發(fā)生分子內(nèi)偶聯(lián)反應(yīng)得2-甲基四氫呋喃。利用水溶液Cu(II)堿金屬氯化物催化氧化1，3-戊二烯得到2-甲基四氫呋喃。</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(yīng)在氮氣氛中保存。處理四氫呋喃時，應(yīng)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(yīng)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(yīng)溶劑，用于電鍍鋁液時可任意控制鋁層厚度且光亮。2-甲基四氫呋喃可替代四氫呋喃做格氏反應(yīng)溶劑。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="麗水2-甲基四氫呋喃價格是多少,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624080435939/3968180.png"></div><p style="text-indent:25px">二甲基甲酰胺(DMF)作為重要的化工原料以及性能優(yōu)良的溶劑,主要應(yīng)用于聚氨酯、腈綸、醫(yī)藥、農(nóng)藥、染料、電子等行業(yè).在聚氨酯行業(yè)中作為洗滌固化劑,主要用于濕法合成革生產(chǎn)；在醫(yī)藥行業(yè)中作為合成藥物中間體,普遍用于制取強力霉素、可的松、磺胺類藥品的生產(chǎn)；在腈綸行業(yè)中作為溶劑,主要用于腈綸的干法紡絲生產(chǎn)；在農(nóng)藥行業(yè)中用于合成高效低毒農(nóng)藥殺蟲劑；在染料行業(yè)作為染料溶劑；在電子行業(yè)作為鍍錫零部件的淬火及電路板的清洗等；其它行業(yè)包括危險氣體的載體、藥品結(jié)晶用溶劑、粘合劑等。能與水、醇、醚、酯、酮、不飽和烴、芳香烴等混溶。四氫呋喃是一種常用的中等極性非質(zhì)子性溶劑。江西2-甲基四氫呋喃行業(yè)前景</p><p style="text-indent:25px">四氫呋喃可以通過氫氧化鈉置于密封瓶中在暗處保存。麗水2-甲基四氫呋喃價格是多少</p><p style="text-indent:25px">四氫-2-甲基呋喃;喃;;2-甲基四喃;2-甲基四氫呋喃(METHF);A-甲基四氫呋喃;2-甲基四氫呋喃,大約150-400PPMBHT作為穩(wěn)定劑，C5H10O分子量：86.13安全術(shù)語遠離火源。不慎與眼睛接觸后，預(yù)防靜電發(fā)生。可能生成性過氧化物。刺激眼睛和呼吸系統(tǒng)?？扇夹晕ｋU特性：遇明火、高溫、氧化劑易燃;燃燒產(chǎn)生刺激煙霧滅火劑：干粉、干砂、二氧化碳、泡沫、1211滅火劑2一甲基四氫呋喃有毒嗎屬于危險品毒性分級：中毒急性毒性：4500 毫克/公斤可燃性危險特性：遇明火、高溫、氧化劑易燃;燃燒產(chǎn)生刺激煙霧物危險特性：其蒸氣與空氣可形成性混合物,遇明火、高熱極易燃燒。麗水2-甲基四氫呋喃價格是多少</p><p style="text-indent:25px">上海蔚云化工有限公司是一家貿(mào)易型類企業(yè)，積極探索行業(yè)發(fā)展，努力實現(xiàn)產(chǎn)品創(chuàng)新。公司是一家私營有限責(zé)任公司企業(yè)，以誠信務(wù)實的創(chuàng)業(yè)精神、專業(yè)的管理團隊、踏實的職工隊伍，努力為廣大用戶提供***的產(chǎn)品。公司擁有專業(yè)的技術(shù)團隊，具有環(huán)戊酮，甲基異丙基酮，丙二胺，二甘醇胺等多項業(yè)務(wù)。上海蔚云化工以創(chuàng)造***產(chǎn)品及服務(wù)的理念，打造高指標(biāo)的服務(wù)，引導(dǎo)行業(yè)的發(fā)展。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1913733.html</p></div></div></div></div></div><div id="8jg3qsk" class="page-right twoColRt"><div id="qkre8ls" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ztq37um" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="bvsewn2" class="recomPic likePro"><a 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