Ethyl decanoate was synthesized from capric acid and ethanol by using ferric potassium alum as catalyst. 以铁钾矾为催化剂,通过葵酸与乙醇反应合成了癸酸乙酯。
The separation of azeotrope of methyl ethyl ketone water has been investigated by extractive distillation using the mixture of ethylene glycol and potassium acetate as an extractant. 结果表明乙二醇与醋酸钾的混合物是分离甲乙酮水二元恒沸物的理想萃取剂。
Separation of Methyl Ethyl Ketone-water System Using Potassium Carbonate 用碳酸钾分离甲乙酮-水的研究
METHOD Ethyl esters of EPA and DHA could form a homogeneous solution with glycerol by a certain of homogeneous agent such as oleic acid potassium salt, and changed into glycerides of EPA and DHA by transesterification at reaction temperature. 方法:用一定量的均相化试剂如油酸钾能使互不相溶的甘油和EPA乙酯、DHA乙酯形成均相反应溶液,并在120℃就开始发生酯交换反应。
The carbonyl methylene condensation reaction of aromatic aldehydes with ethyl cyanoacetate has been carried out smoothly in the presence of potassium fluoride only giving E isomers in high yield. 在氟化钾催化下,芳香醛与氰乙酸乙酯发生羰基与活性亚甲基的缩合反应,高收率地得到缩合产物,且只得到E式产物。
Kinetic spectrophotometric determination of trace formaldehyde on the oxidation of ethyl orange with potassium bromate 乙基橙-溴酸钾体系动力学光度法测定痕量甲醛
Condition of thin-layer scanning: silicon-gel H-0.8% CMC-Na-0.8% NaOH thin-layer sheet, Ethyl Acetate-Methanol-ammonia water ( 17 ∶ 2 ∶ 1) as expansion agent, improved bismuth and potassium iodide and 2% sodium nitrite for atomizing develop; 薄层扫描条件:硅胶H-0.8%CMC-Na-0.8%NaOH薄层板,以乙酸乙酯-甲醇-氨水(17∶2∶1)为展开剂,改良碘化铋钾及2%亚硝酸钠喷雾显色;
The alkylation of diethyl malonate and ethyl cyanoacetate using powdered potassium carbonate asa base in the absence of solvent and other catalyst is studied. 本文报道在碳酸钾存在下,丙二酸二乙酯、氰乙酸乙酯的固液相烃基化反应。
Application of the reaction system: oxidation of ethyl orange by potassium chlorate for the determination of the trace amounts of formaldehyde in the water-swollen squid 氯酸钾氧化甲基橙反应体系在测定水发鱿鱼中的微量甲醛时的应用
The polyether polyol specimen was dissolved in the ethyl alcohol-water mixed solvent, and then the content of potassium ion and sodium ion in the polyether polyol was determinated directly by atomic absorption spectrophotometer. 以乙醇-水混合液为溶剂,将聚醚多元醇样品直接溶解,然后用原子吸收分光光度计测定聚醚多元醇产品中的钾、钠离子含量。
Thas a mixture of 0.1 mol phenol, 0.3 mol n-butyl bromide ethyl alcohol as solvent in the presence of potassium hydroxide and polyethylene glycol-400 were heated for a h, the yield of n-butyl phenyl ether could reach 96 7%. 当01mol苯酚,03mol正丁基溴,乙醇为溶剂,在氢氧化钾和聚乙二醇400存在下,加热2h正丁基苯基醚收率达967%