金華2-甲基四氫呋喃哪家優(yōu)惠上海蔚云化工供應-b2b網(wǎng)站_b2b電子商務平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="四氫呋喃性狀：無色液體，有與醚類似的氣味。能與水和有機溶劑相混溶，易燃。四氫呋喃在強氧化劑高錳酸鉀的作用下會發(fā)生反應生成丁二酸；檢測殘留四氫呋喃的方法感覺用儀器分析，如氣、液相色譜；四氫呋喃是一種性質比較穩(wěn)定的常用的有機溶劑，也可用于化工產(chǎn)"><meta name="keywords" content="金華2-甲基四氫呋喃哪家優(yōu)惠,2-甲基四氫呋喃"><link rel="canonical" href="http://m.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623991305064/1986424.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="apwdpmt" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623991305064/1986424.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7kroqsz" 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)品關鍵詞：</span>金華2-甲基四氫呋喃哪家優(yōu)惠,2-甲基四氫呋喃</p><p><span>***更新：</span>2020-11-13 06:22:02</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="e8o3sur" 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="z7jy3wd" class="page-proshow02"><p class="title">詳細說明</p><div id="yn2nf7p" class="box"><p><p style="text-indent:25px">四氫呋喃性狀：無色液體，有與醚類似的氣味。能與水和有機溶劑相混溶，易燃。四氫呋喃在強氧化劑高錳酸鉀的作用下會發(fā)生反應生成丁二酸；檢測殘留四氫呋喃的方法感覺用儀器分析，如氣、液相色譜；四氫呋喃是一種性質比較穩(wěn)定的常用的有機溶劑，也可用于化工產(chǎn)品生產(chǎn)原料。四氫呋喃的沸點是分子量72.11相對dao密度（du20℃/4℃dao）0.8892凝固點/℃-108.5沸點/℃65.4閃點（閉口）/℃17.2折光率（20℃）1.407介電?；財?shù)（25℃）7.58偶極矩/(10^-30C·答m)5，金華2-甲基四氫呋喃哪家優(yōu)惠.70,5.67表面張力/(mN/m)26.4黏度(20℃)/mPa·s0.55臨界溫度/℃26.8臨界壓力/MPa5.19蒸氣壓(15℃)/kPa15.2 蒸氣相對密度（空氣=1）2.5燃點/℃321，金華2-甲基四氫呋喃哪家優(yōu)惠.1蒸發(fā)熱(66℃)/(KJ/Kg)410極限/%(體積)2.3-11.8較小引燃能量/mJ0，金華2-甲基四氫呋喃哪家優(yōu)惠.5。常溫下大多數(shù)聚四氫呋喃二醇是白色蠟狀固體。金華2-甲基四氫呋喃哪家優(yōu)惠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="金華2-甲基四氫呋喃哪家優(yōu)惠,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623991305064/1986424.png"></div><p style="text-indent:25px">四氫呋喃普遍用于表面涂料，保護性涂料，油墨，萃取劑和人造革的表面處理，也專是制藥行業(yè)的主要溶屬劑。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）；色譜溶劑（凝膠滲透色譜法）。四氫呋喃也是生產(chǎn)聚四亞甲基醚二醇重要原料，并用于天然氣加味。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。揚州2-甲基四氫呋喃哪家優(yōu)惠四氫呋喃是一個雜環(huán)有機化合物。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="金華2-甲基四氫呋喃哪家優(yōu)惠,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623961490638/1355180.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，使其在溶劑替代應用領域得以迅速的的發(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溶劑或萃取溶劑；應用于有機金屬反應和兩相反應的溶劑。14KPa下，以MeCO(CH2)nCH2Cl為原料與Bu3SnH反應得到環(huán)醚，且產(chǎn)率與環(huán)的大小有關。當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)生分子內偶聯(lián)反應得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">與氧化劑接觸猛烈反應。流速過快,容易產(chǎn)生和積聚靜電。其蒸氣比空氣重,能在較低處擴散到相當遠的地方,你好四氫糠醇和溴化氫能反應，能生成2-溴甲基四氫呋喃。你好四氫糠醇和溴化氫能反應，能生成2-溴甲基四氫呋喃。這是因為四氫糠醇具有伯醇的化學性質，所以可以和溴化氫通過雙分子親核取代機制(SN2)反應生成2-溴甲基四氫呋喃。四氫呋喃極性強四氫呋喃是一類雜環(huán)有機化合物。它是強的極性醚類之一,半數(shù)致死量：二甲亞砜（大鼠，經(jīng)口）17.9ml/經(jīng)口)7.6ml/kg，四氫呋喃(大鼠,如極性分子與非極性分子之間一般不能互溶。（有時要看看有沒有溶劑化作用，如溴是非極性分子，水是極性分子，除了反應還有溶劑化作用。）組成這兩種物質的化學鍵是否相同。四氫呋喃可用作溶劑、有機合成的原料。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="金華2-甲基四氫呋喃哪家優(yōu)惠,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623884264046/3770351.png"></div><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。設置反應精餾裝置預熱器溫度85℃，設置催化劑床層上口溫度85℃，下口溫度110℃，設置體系壓力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。甲烷分子中去掉一個氫原子后剩下的電中性的一價基團。揚州2-甲基四氫呋喃價格是多少</p><p style="text-indent:25px">甲基化的酶促反應是由微生物直接參與進行的。金華2-甲基四氫呋喃哪家優(yōu)惠</p><p style="text-indent:25px">四氫呋喃丙烯酸酯是一種重要的特種丙烯酸酯，分子中的環(huán)狀醚基比直鏈醚基更富于活性，醚鍵的α-位碳上的氫也有一定活性，特殊結構賦予其后續(xù)產(chǎn)品特殊的性質。以TFA作為共聚成分的丙烯酸樹脂與氨基樹脂并用時，可在較低溫度（100℃左右）下固化。同時TFA分子價鍵有一定的柔韌性，與其它樹脂并用可以起到增塑的效果。此外，TFA還可以作為單體稀釋劑應用于紫外光（UV）固化產(chǎn)品，其特殊的環(huán)醚結構使其與其它單官能度單體相比對大多數(shù)底材具有更好的附著力，同時有著低收縮性、強耐候性、強耐磨性和強耐水性，因此被普遍應用于光固化的粘合劑、涂料、油墨等領域。隨著材料科學的日益發(fā)展，可以預計TFA會有越來越普遍的應用。金華2-甲基四氫呋喃哪家優(yōu)惠</p><p style="text-indent:25px">上海蔚云化工有限公司專注技術創(chuàng)新和產(chǎn)品研發(fā)，發(fā)展規(guī)模團隊不斷壯大。一批專業(yè)的技術團隊，是實現(xiàn)企業(yè)戰(zhàn)略目標的基礎，是企業(yè)持續(xù)發(fā)展的動力。公司業(yè)務范圍主要包括：環(huán)戊酮，甲基異丙基酮，丙二胺，二甘醇胺等。公司奉行顧客至上、質量為本的經(jīng)營宗旨，深受客戶好評。公司憑著雄厚的技術力量、飽滿的工作態(tài)度、扎實的工作作風、良好的職業(yè)道德，樹立了良好的環(huán)戊酮，甲基異丙基酮，丙二胺，二甘醇胺形象，贏得了社會各界的信任和認可。</p></p><br /><p>文章來源地址: 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