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产品详细</h2></div> <div class="container"> <table width="100%" border="0" cellspacing="0" cellpadding="0" style=" padding:1px; margin-bottom:12px; border:1px solid #e7e7e7; background:#fafafa;"> <tr> <td width="163" align="center" valign="top" style="padding:10px; border-right:1px solid #e7e7e7;"><p style="border:2px solid #dbdbdb;width:163px;"><img src="/uploads/cp/20140717034353.jpg" width="163" height="144" onload="imgZoomer(this,163,144)" onclick="new ImageViewer(this,'img');"/></p></td> <td valign="top"><div class="proct_bg1"> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <th width="19%">产品᫧?/th> <td width="81%"><span id="nesttitle">̻硝基乙苯厂?/span></td> </tr> <tr> <th>产品ɷ?/th> <td></td> </tr> <tr> <th style=" vertical-align:top;">产品简介ϸ</th> <td><p></p></td> </tr> </table> </div></td> </tr> </table> <div class="content" > <h2><span>详细说明</span></h2> <div class="detail"><p><p> <span style="font-size:18px;line-height:2;">      医药中间˸医药Є主要活成分,大致等同于半成品,属于多段工艺中间的,经过一벷艺处理的粗产物,也就是属于工业材料,不是终产品〱市场概念来说就是这种东西͂用于零售包装,同时也没获得上市许可,不能用于终端用途,只能在企⹋间作为ʦ材料收买?/span> </p> <p> <span style="font-size:18px;line-height:2;">      <a href="http://btwhere.com/" target="_blank">֜宁ա安勤化学有限公?/a>是一家综合性的公司,公司拥善的质量检验机构和质量保证体系。其产品远ƽ内外,并同全国各地建立了广泛̳好的벊쳻。在벹Є业ɡ合作中,安勤化学人始终ش量为生命,服ɡ为,信誉为宗旨,并以合理的价格赢了广大客户的信赖,使之成为国内外满意Є供应商。以来,公司凭健全的营网络,̳好的沟逷为广大客户提供؜多品种、多包装、多层次؝的优质产品〱后,公司将始持以科技为先导,댖产品结构;以市场需汱目标,充分利用资源优ɿ,立足ƽ内,向世界,开쾺场,从上提其竞争力,以实现与客户的互惠互利?nbsp;</span> </p> <p> <span style="font-size:18px;line-height:2;">      氯霉?/span><span style="font-size:18px;line-height:2;">ߩ发现于1947年,是人类认识的个含硝基Є天勇化合物?/span><span style="font-size:18px;line-height:2;">삹149~153℃,微溶于水,易溶于甲醇、乙ć等机溶剂?/span><span style="font-size:18px;line-height:2;">对硝<b><a href="http://btwhere.com/" target="_blank" style="font-weight:bold">基苯乙酮</a></b>法,</span><span style="font-size:18px;line-height:2;">中国目前生产氯霉素采用的路线?/span><span style="font-size:18px;line-height:2;">以乙苯为ա料,经硝化、氧化、I化、氨解、ա、二氯乙酰化等反应制备氯霉素?/span> </p> <p> <span style="font-size:18px;line-height:2;">混酸Є制备ϸ</span><br /> <span style="font-size:18px;line-height:2;">      ?2%以上的硫酸,在搅及冷却下,以细流ɠ入水,控制温度?0℃~45℃之间。加毕,降温?5℃,继续ɠ入96%的硝酸,温度不超40℃。加毕,冷߿20℃?/span><br /> <span style="font-size:18px;line-height:2;">      入乙苯,?8℃滴ɠ混酸,ɠ毕,升温߿40ℿ45℃,继续保温 1h ,使反应完全?/span><br /> <span style="font-size:18px;line-height:2;">      勇后冷却?0℃,Ǚ置分层。用水洗ա滭留酸,用碱洗ա酚类,后用水洗ա滭留碱液?/span><br /> <span style="font-size:18px;line-height:2;">      连续减压分馏աɊ?.3×103Pa以下,在塔顶馏出<a href="http://btwhere.com/lxjyb/" target="_blank">̻硝基乙?/a>〱塔底馏出Є沸物᫻一次减ա蒸馏到精制对硝基,由?b>间硝基乙?/b>Є沸͹与对位体相近故精馏得到Є对硝基벐?%左右的间位体?/span><br /> <span style="font-size:18px;line-height:2;">      将甲ć置于干燥的反应罐内,加入二氯乙酸甲酯,在搅拌下ɠ入右旋زװ基醇؝,?5℃左右反?h。加入活炭脱色,滤,在搅拌下往滤液中加入蒸馏水,使氯霉素析出。冷?5℃滤,洗涤、干燥,得到氯霉素成哲?/span> <br /> <div> <br /> </div> </p><span id="nestremark"></span></p></div> <p> ¦条ϸ<a href="/supply/11.html">ċ酸?/a> 下一?<a href="/supply/9.html">对硝基苯乙酮ա家</a> </p> </div><div class="tag">相关݇签?a 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