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id="ictl53m" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624039166387/6007011.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ba8zdzb" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624039166387/6007011.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="78y3krt" 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>連云港2-甲基四氫呋喃批發(fā)哪家好,2-甲基四氫呋喃</p><p><span>***更新：</span>2021-01-10 07:19:33</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="dxz78r3" 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="eskwlc3" class="page-proshow02"><p class="title">詳細說明</p><div id="3lkb4ba" class="box"><p><p style="text-indent:25px">四氫呋喃的沸點比較低，將其調(diào)入汽油后使汽油的餾程溫度降低。這一性質(zhì)讓生產(chǎn)超高辛烷值汽油的煉油廠獲得了很大的經(jīng)濟效益。采用四氫呋喃作為反應溶劑，使反應產(chǎn)物和催化劑容易分離，使3-HPA的濃度提高到35%以上。采用水萃取3-HPA，使鈷催化劑的循環(huán)使用率達99.6%，通過控制羰基化反應中的水含量和3-HPA的濃度，使高沸點副產(chǎn)物很少，生成3-HPA選擇性大于90%，使該技術(shù)的工業(yè)化成為可能。產(chǎn)品運輸：運輸車輛應配備相應消防器材及泄漏應急處理設(shè)備。嚴禁與氧化劑、食用化學品等混裝混運。禁止使用易產(chǎn)生火花的機械設(shè)備和工具裝卸，連云港2-甲基四氫呋喃批發(fā)哪家好。夏季較好早晚運輸。運輸途中應防暴曬、雨淋，防高溫，連云港2-甲基四氫呋喃批發(fā)哪家好。中途停留時應遠離火種，連云港2-甲基四氫呋喃批發(fā)哪家好、熱源、高溫區(qū)。鐵路運輸時要禁止溜放。嚴禁用木船、水泥船散裝運輸。運輸工具上應根據(jù)相關(guān)運輸要求張貼危險標志、公告。甲基化作用可在需氧或厭氧條件下進行。連云港2-甲基四氫呋喃批發(fā)哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="連云港2-甲基四氫呋喃批發(fā)哪家好,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624039166387/6007011.png"></div><p style="text-indent:25px">四氫呋喃主要用途是作高分子聚合物的前體四氫呋喃是一個雜環(huán)有機化合物，分子式為C4H8O。屬于醚類，是芳香族化合物呋喃的完全氫化產(chǎn)物，是一種無色、可與水混溶、在常溫常壓下有較小粘稠度的有機液體。這種環(huán)狀醚的化學式可寫作(CH2)4O。由于它的液態(tài)范圍很長，所以是一種常用的中等極性非質(zhì)子性溶劑。它的主要用途是作高分子聚合物的前體。盡管THF的氣味和化學性質(zhì)與**很相似，但是麻醉效果卻很差。用作溶劑、有機合成的原料。用作色譜分析試劑、有機溶劑及尼龍66中間體。四氫呋喃又名一氧五環(huán)、氧雜環(huán)戊烷、四亞甲基氧，是合成農(nóng)藥苯丁錫的中間體，另外，可直接用于制合成纖維、合成樹脂、合成橡膠，也是許多聚合材料、精密磁帶和電鍍工業(yè)的溶劑，還用于制己二腈、己二酸、己二胺、丁二酸、丁二醇、γ-丁內(nèi)酯等，在醫(yī)藥工業(yè)上，可用于生產(chǎn)咳必清、黃體酮、利復霉素和用作制藥溶劑等。福建2-甲基四氫呋喃有哪些優(yōu)勢甲基作為一個化學基團，它能夠結(jié)合在DNA上某些特定部位。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="連云港2-甲基四氫呋喃批發(fā)哪家好,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623894254288/5270430.png"></div><p style="text-indent:25px">四氫呋喃檢測管的檢測量程總的范圍是：5---800ppm，它有兩種型號。第一種型號檢測管的量程是5---232ppm，第二種型號檢測管的量程是20---800ppm。四氫呋喃檢測管操作簡單，實用方便，檢測結(jié)果較準可靠，如果您在短時間檢測環(huán)境中的四氫呋喃的濃度，這是一款不錯的選擇，如果您需要長時間檢測環(huán)境中的四氫呋喃，建議您選擇四氫呋喃氣體檢測儀，四氫呋喃氣體檢測儀能夠?qū)崟r監(jiān)測環(huán)境中的四氫呋喃及其濃度的變化情況。如果您在選購四氫呋喃檢測管或在選擇四氫呋喃檢測管時有任何問題，又或者在使用GASTEC氣體檢測管檢測四氫呋喃時有任何問題?？梢约皶r解決。</p><p style="text-indent:25px">四氫呋喃是一種重要的有機化工及精細化工原料，普遍應用于樹脂溶劑（磁帶涂層、PVC表面涂層、清洗PVC反應器、脫除PVC薄膜、玻璃紙涂層、塑料印刷油墨、熱塑性聚氨酯涂層）；反應溶劑（格式試劑、烷基堿金屬化合物和芳基堿金屬化合物、氫化鋁和氫化硼、甾族化合物和大分子有機聚合物）；化學中間產(chǎn)物（聚合生成PTMEG、天然氣加味劑）；色譜溶劑（凝膠滲透色譜法）。聚四氫呋喃主要用作嵌段聚氨酯或嵌段聚醚聚酯的軟鏈段。由平均分子量為1000的聚四氫呋喃制得的嵌段聚氨酯橡膠，可用作輪胎、傳動帶、墊圈等;也可用于涂料、人造革、薄膜等。制得的嵌段聚醚聚酯為熱塑性彈性體。平均分子量為2000的聚四氫呋喃，可用以制聚氨酯彈性纖維。由聚四氫呋喃制成的嵌段聚氨酯具有良好的抗凝血性，可用作醫(yī)用高分子材料。四氫呋喃也是生產(chǎn)聚四亞甲基醚二醇重要原料。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="連云港2-甲基四氫呋喃批發(fā)哪家好,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623884264046/3770351.png"></div><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，預防靜電發(fā)生?？赡苌尚赃^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。甲基四氫呋喃是作為綠色溶劑替代四氫呋喃的。連云港2-甲基四氫呋喃批發(fā)哪家好</p><p style="text-indent:25px">儲存于陰涼、通風的庫房。連云港2-甲基四氫呋喃批發(fā)哪家好</p><p style="text-indent:25px">丙烯酸四氫呋喃酯的合成量取100mL上述自制固體酸催化劑裝入反應精餾裝置的反應管中，催化劑床層上下方均裝填石英砂作為保溫、支撐層。取摩爾比1.2：1的丙烯酸和四氫糠醇，以兩倍質(zhì)量的甲苯稀釋，稀釋液中加入0.01%的對苯二酚作為阻聚劑，攪拌至對苯二酚完全溶解，放置備用。設(shè)置反應精餾裝置預熱器溫度85℃，設(shè)置催化劑床層上口溫度85℃，下口溫度110℃，設(shè)置體系壓力80KPa，將上述原料溶液以一定流速連續(xù)輸入到反應器，經(jīng)預熱器預熱后到達反應器頂部，自然流下在催化劑床層進行酯化反應。反應中生成的水和溶劑甲苯形成共沸物從反應器頂部抽出，冷凝后進入分水器，甲苯回流入反應器，水定期采出。反應體系穩(wěn)定一小時后取樣分析，以GCMS-QP 2010 SE氣質(zhì)聯(lián)用儀進行定性分析，GC-2010 Plus氣相色譜儀進行定量分析。四氫糠醇轉(zhuǎn)化率99%，單酯選擇性97%。粗產(chǎn)品濃縮后，將殘留溶劑和過量丙烯酸蒸出后得到成品，為透明接近無色的液體，收率97%（以四氫糠醇計），酯含量99%，酸值0.2（mgKOH/g），水分0.05%，鉑鈷色號小于20，指標均達到產(chǎn)品標準要求。連云港2-甲基四氫呋喃批發(fā)哪家好</p><p style="text-indent:25px">上海蔚云化工有限公司致力于化工，是一家貿(mào)易型公司。公司業(yè)務分為環(huán)戊酮，甲基異丙基酮，丙二胺，二甘醇胺等，目前不斷進行創(chuàng)新和服務改進，為客戶提供良好的產(chǎn)品和服務。公司從事化工多年，有著創(chuàng)新的設(shè)計、強大的技術(shù)，還有一批**的專業(yè)化的隊伍，確保為客戶提供良好的產(chǎn)品及服務。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2784508.html</p></div></div></div></div></div><div id="mbik4pr" class="page-right twoColRt"><div id="3jyutpl" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="pz72kb7" 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" class="vcenter" 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