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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>寧波2-甲基四氫呋喃哪里有賣,2-甲基四氫呋喃</p><p><span>***更新：</span>2020-12-31 00:26:48</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="f7ffvdr" 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="97nttzx" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="xddjzn9" class="box"><p><p style="text-indent:25px">四氫呋喃聚合生產(chǎn)聚四亞甲基醚二醇催化劑制備技術(shù)，多級孔硅鋁復(fù)合氧化物聚合催化劑，實現(xiàn)了PTMEG產(chǎn)品的分子量大小及分子量分布的調(diào)控。與國外粘土催化劑相比，寧波2-甲基四氫呋喃哪里有賣，四氫呋喃轉(zhuǎn)化率由30~40%提高到38%~45%之間；獲得了以SiO2改性Al2O3為載體的負(fù)載Pd加氫脫色催化劑，在羰基高選擇性加氫的同時避免了加氫過程中PTMEG分子中C-O-C鍵的斷裂，產(chǎn)品收率提高到99%以上，色度由原來的30 APHA，降低至3個色號以下；基于項目的研究，形成了聚合與加氫脫色催化劑工業(yè)規(guī)模制備技術(shù)，編制了200 t/a催化劑制備與催化反應(yīng)工藝完整的工藝包，寧波2-甲基四氫呋喃哪里有賣，建成了催化劑制備與反應(yīng)工藝示范工程，寧波2-甲基四氫呋喃哪里有賣，具備了50 t/a催化劑生產(chǎn)能力。四氫呋喃是合成農(nóng)藥苯丁錫的中間體。寧波2-甲基四氫呋喃哪里有賣</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波2-甲基四氫呋喃哪里有賣,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624080435939/3968180.png"></div><p style="text-indent:25px">使用注意事項：呼吸系統(tǒng)防護(hù)：可能接觸其蒸氣時，應(yīng)該佩戴過濾式防毒面具(半面罩)。必要時，建議佩戴自給式呼吸器眼睛防護(hù)：一般不需要特殊防護(hù)，高濃度接觸時可戴安全防護(hù)眼鏡。身體防護(hù)：穿防靜電工作服。手防護(hù)：戴防苯耐油手套。其它：工作現(xiàn)場嚴(yán)禁吸煙。工作畢，淋浴更衣。注意個人清潔衛(wèi)生。應(yīng)急處置：皮膚接觸：脫去被污染的衣著，用肥皂水和清水徹底沖洗皮膚。眼睛接觸：提起眼瞼，用流動清水或生理鹽水沖洗。就醫(yī)。吸入：迅速脫離現(xiàn)場至空氣新鮮處。保持呼吸道通暢。如呼吸困難，給輸氧。如呼吸停止，立即進(jìn)行人工呼吸。就醫(yī)。食入：飲足量溫水，催吐，就醫(yī)。滅火方法：噴水冷卻容器，可能的話將容器從火場移至空曠處。處在火場中的容器若已變色或從安全泄壓裝置中產(chǎn)生聲音，必須馬上撤離。滅火劑：泡沫、干粉、二氧化碳、砂土。用水滅火無效。小量泄漏：用砂土或其它不燃材料吸附或吸收。也可以用大量水沖洗，洗水稀釋后放入廢水系統(tǒng)。大量泄漏：構(gòu)筑圍堤或挖坑收容。用泡沫覆蓋，降低蒸氣災(zāi)害。噴霧狀水冷卻和稀釋蒸汽、保護(hù)現(xiàn)場人員、把泄漏物稀釋成不燃物。用防爆泵轉(zhuǎn)移至槽車或**收集器內(nèi)，回收或運至廢物處理場所處置。寧波2-甲基四氫呋喃哪里有賣甲基和DNA結(jié)合過程叫甲基化。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波2-甲基四氫呋喃哪里有賣,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624164107853/4550822.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(xué)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(xué)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(fù)霉素和用作制藥溶劑等。</p><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(fēng)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(dāng)催化加氫反應(yīng)采用氯化鈀催化劑時,主要的產(chǎn)品是乙酰丙醇(見00420),但也可回收得到副產(chǎn)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(dāng)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。甲基化作用可在需氧或厭氧條件下進(jìn)行。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波2-甲基四氫呋喃哪里有賣,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624039166387/6007011.png"></div><p style="text-indent:25px">甲基，化學(xué)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(tuán)。甲基作為一個化學(xué)基團(tuán)，它能夠結(jié)合在DNA上某些特定部位，這個甲基和DNA結(jié)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(tuán)。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(zhì)所必需的基團(tuán)，以及甲基化反應(yīng)在神經(jīng)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(rèn)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(rèn)為動物體內(nèi)自身不能合成甲基，需要食物中具有富含甲基物質(zhì)，它們的分子中具有易反應(yīng)的甲基，從而參與動物生理功能，這類富含甲基的物質(zhì)稱為“甲基供體”,易參與此反應(yīng)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。2-甲基四氫呋喃可替代四氫呋喃做格氏反應(yīng)溶劑。寧波2-甲基四氫呋喃哪里有賣</p><p style="text-indent:25px">THF經(jīng)硫化氫處理生成四氫硫酚，可作燃料氣中的臭味劑。寧波2-甲基四氫呋喃哪里有賣</p><p style="text-indent:25px">聚四亞甲基醚二醇，又稱聚(四氫呋喃)，簡稱PTMEG，是一種重要的高分子材料，用途十分普遍。氨綸工業(yè)PTMEG的主要領(lǐng)域是氨綸工業(yè)。氨綸是一種性能優(yōu)良的彈性纖維，主要用于生產(chǎn)內(nèi)衣、泳衣、運動裝和襪類。彈性體由PTMEG合成的聚氨酯，具有抗水解、耐老化、彈性好、耐磨等優(yōu)點，是特種橡膠的原料，可以用來制作航空軟管、升降機輪胎、工業(yè)膠帶、運動鞋、醫(yī)用假體等。其他領(lǐng)域PTMEG具有強度高、彈性好、耐霉變等優(yōu)點，也可以用于合成革制品、輪胎、傳送帶、建筑涂料和地板，以及防護(hù)材料等領(lǐng)域的生產(chǎn)。寧波2-甲基四氫呋喃哪里有賣</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(chǎn)品（除危險化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品）、化工機械設(shè)備及配件的銷售，在化工技術(shù)領(lǐng)域內(nèi)從事技術(shù)開發(fā)、技術(shù)轉(zhuǎn)讓、技術(shù)服務(wù)、技術(shù)咨詢。【依法須經(jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)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(tuán)隊取得成功。上海蔚云化工創(chuàng)始人盛志華，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2632563.html</p></div></div></div></div></div><div id="l9p97dj" class="page-right twoColRt"><div id="ftr7dz7" class="box01 margin10 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