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R23\u002F24\u002F25:Toxic by inhalation, in contact with skin and if swallowed .",{"key":388,"value":389},"安全声明 (欧洲)","S26-S39",{"key":391,"value":392},"危险品运输编码","NONH for all modes of transport",{"key":394,"value":395},"WGK德国","3",{"key":355,"value":397},"29183000","\u003Ctd>\n\n\u003Cp>\u003Cstrong>α-酮戊二酸毒理学数据:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cp>\u003C\u002Fp>\u003Cp>二、毒理学数据：\u003C\u002Fp>\n\u003Cp>急性毒性：不可用。\u003C\u002Fp>\n\u003Cp>\u003C\u002Fp>\n\u003Cp>\u003Cstrong>α-酮戊二酸生态学数据:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cp>\u003C\u002Fp>\u003Cp>三、生态学数据：\u003C\u002Fp>\n\u003Cp>1、其它有害作用：该物质对环境可能有危害，对水体应给予特别注意。\u003C\u002Fp>\n\u003Cp>\u003C\u002Fp>\n\u003Cp>\u003Ca href=\"\u002Fen\u002Fcas\u002F328-50-7_1027920.html#duXinDiv\">α-酮戊二酸毒性英文版\u003C\u002Fa>\u003C\u002Fp>\n\n\u003C\u002Ftd>","\u003Cp>1.将225g草酰琥珀酸三乙酯与600ml浓盐酸混合，放置过液。蒸馏浓缩至140℃，剩余物冷却结晶，得α-酮基戊二酸110-112g，收率92-93%。\u003C\u002Fp>\u003Cp>2.制法： \u003C\u002Fp>\u003Cp>草酰丁二酸三乙酯（3）：于装有搅拌器、回流冷凝器的反应瓶中，加入无水乙醇360mL，分批加入洁净的金属钠23g（1.0mol），加完后加热回流使金属钠反应完全。改成蒸馏装置，将乙醇蒸出，同时不断滴加甲苯，将乙醇除净，直至内温得到105℃.冷至室温，加入无水乙醚650mL，草酸二乙酯146g（1mol），搅拌下加入丁二酸二乙酯（2）174g（1.0mol），室温放置12h。搅拌下加入水500mL，分出有机层，有机层用水150mL提取，合并水层，浓盐酸酸化，析出油状物。分出油层，水层用乙醚提取3次。合并有机层，无水硫酸镁干燥。回收乙醚得黄色油状化合物（3）235～250g，收率86%～91%。a-羰基戊二酸（1）：于装有搅拌器、回流冷凝器的反应瓶中，加入上述化合物（3）225g（0.82mol），浓盐酸330mL，水660mL，搅拌下加热回流4h，减压浓缩至干（60～70℃），剩余物中加入硝基乙烷200mL，加热溶解，趁热过滤，滤饼用热的硝基乙烷洗涤。合并硝基乙烷溶液，于0～10℃搅拌5h。抽滤，于90℃减压干燥4h，得化合物（1）88～99g，收率73%～83%。\u003C\u002Fp>","2026-08-21T07:51:12.859463Z",false,[403,409,415,421,427,433,439,445,446,452,458,464],{"slug":404,"cid":405,"name":406,"nameZh":407,"cas":408},"785880517214998528","J-1108007-2","Sodium 1-propanesulfonate","1-丙烷磺酸钠","14533-63-2",{"slug":410,"cid":411,"name":412,"nameZh":413,"cas":414},"785876267999170560","J-1072471-7","D-(+)-Glyceric acid hemicalcium salt","D-(+)-甘油酸半钙盐","14028-62-7",{"slug":416,"cid":417,"name":418,"nameZh":419,"cas":420},"785872759451291648","J-1340404-1","4-Aminophenol hydrochloride","4-氨基苯酚盐酸盐","51-78-5",{"slug":422,"cid":423,"name":424,"nameZh":425,"cas":426},"785891471533281280","J-961553-6","3-Aminophenol hydrochloride","盐酸间氨基酚","51-81-0",{"slug":428,"cid":429,"name":430,"nameZh":431,"cas":432},"785893851679166464","J-864802-0","2-Aminophenol hydrochloride","2-氨基苯酚盐酸盐","51-19-4",{"slug":434,"cid":435,"name":436,"nameZh":437,"cas":438},"851791865010196480","J-969703-4","3-Chloro-4-fluoroaniline hydrochloride","3-氯-4-氟苯胺盐酸盐","106792-83-0",{"slug":440,"cid":441,"name":442,"nameZh":443,"cas":444},"785888655192363008","J-25468-2","Cobalt(II) oxalate","草酸钴(II)","814-89-1",{"slug":74,"cid":75,"name":77,"nameZh":78,"cas":79},{"slug":447,"cid":448,"name":449,"nameZh":450,"cas":451},"785892220728250368","J-901158-9","1,2-Propanediamine dihydrochloride","1,2-丙二胺二盐酸盐","62063-19-8",{"slug":453,"cid":454,"name":455,"nameZh":456,"cas":457},"785883790131073024","J-1383357-3","2-Fluoroaniline hydrochloride","2-氟苯胺盐酸盐","51085-49-5",{"slug":459,"cid":460,"name":461,"nameZh":462,"cas":463},"785897949027635200","J-48470-8","Strontium carbonate","碳酸锶","1633-05-2",{"slug":465,"cid":466,"name":467,"nameZh":468,"cas":469},"785893950647963648","J-36717-9","Quinuclidine hydrochloride","奎宁环盐酸盐","39896-06-5",1794253380073,"zh-CN",[]]