Soluble in ethanol, ethyl acetate, ethyl ether, most organic solvents such as acetone, slightly soluble in water and glycol. 易溶于乙醇、乙酸乙酯、乙醚、等大多数有机溶剂,微溶于水和甘醇。
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。
Fructone was synthesized from ethyl acetoacetate and glycol in the presence of SO_4~ ( 2-)/ TiO_2-MoO_3-La_2O_3.The factors influencing the synthesis were discussed and the best conditions were found out. 以稀土改性固体超强酸SO42-/TiO2-MoO3-La2O3为多相催化剂,对以乙酰乙酸乙酯和乙二醇为原料合成苹果酯的反应条件进行了研究。
The paper introduced an industrial test ( 300 t/ a) in which sucrose fatty acid esters ( SE) were synthesized by transesterification of fatty acid ethyl esters with sucrose in propylene glycol solvent. 进行了由蔗糖和脂肪酸乙酯在丙二醇溶剂中经酯交换合成蔗糖脂肪酸酯(Sucrosefattyacidesters)简称蔗糖酯(SE)的300t/a工业性实验。
Gd2O3: Eu nanocrystal was synthesized by EDTA complexing sol-gel process at relatively low temperature, in which ethyl-ene-diamine-tetraacetic acid ( EDTA) and polyethylene glycol ( PEG) were used as the chelating agent and disperser respectively. 以EDTA为络合剂,聚乙二醇为有机分散剂,用络合溶胶-凝胶法制备出Gd2O3:Eu纳米晶。
Divinyl benzene ( DVB) was more effective than ethyl glycol dimethyl methacrylate ( EGDMA) to make polymer crosslinked. 二乙烯基苯(DVB)的交联效率稍高于双甲基丙烯酸乙二醇酯(EGDMA);
The New Ways of Synthesizing Ethyl Glycol Stearate 乙二醇硬脂酸酯的合成新方法
Chalcones can be prepared through condensation of 4-hydroxyl acetophenone or 2,4-dihydroxyl acetophenone with substitued benzaldehydes in ethyl glycol solution, using the catalyst of boric acid at 110~ 120 ℃ in 6 h. The product was purified by the flash chromatography on silica gel. 4羟基苯乙酮或2,4二羟基苯乙酮与取代苯甲醛在乙二醇溶液中,以硼酸为催化剂,于110~120℃反应6h,再经柱分离精制得羟基查尔酮衍生物。
Critical Technique for Producing Absolute Ethyl Alcohol in the Process of Glycol Dehydration with Salt by Membrance Separation 用膜分离技术探析乙二醇加盐脱水法生产无水乙醇的关键技术
METHODS Amphiphilic polyphosphazenes with ethyl tryptophan ( EtTrp) and poly ( ethylene glycol) ( PEG) as side groups were synthesized by two substitution reactions; 方法通过两步取代反应合成了含有色氨酸乙酯(EtTrp)和不同分子量的聚乙二醇(PEG)的两亲聚膦腈;
Catalytic Performance of Phosphotungstic Acid ( Salt) Supported on SiO_2 for Acetalization of Ethyl Acetoacetate with Glycol SiO2负载磷钨酸(盐)催化剂对乙酰乙酸乙酯与乙二醇缩合反应的催化性能
Treating with poly ( ethyl glycol)( PEG) had no obvious influence on disaggregation of ZnO. The molecular weights of PET decreased, and the crystallization ability improved as PEG added. 用聚乙二醇(PEG)处理ZnO,ZnO团聚无明显改善,PET粘均分子量降低,结晶性能提高。
β-Naphthol ethyl ether was prepared by the reaction of β-naphthol with bromic ether in the presence of polyethylene glycol. 研究了β-萘酚与溴乙烷在聚乙二醇存在下的反应。
And the second step is hydrogenation of ethyl hydroxyacetate to ethylene glycol. Thermodynamic analysis of the reaction system indicates that the reactions of the two are reversible exothermic reactions. 系统热力学分析表明,草酸二乙酯加氢制乙二醇的两步反应都是可逆放热反应,其中,低温对生成乙醇酸乙酯的反应有利,而高温对生成乙二醇的反应有利。
The results show that: there are many modifiers can improve the humidity resistance of sodium silicate sand, including polyvinyl alcohol, disodium hydrogen phosphate, xylitol, lithium carbonate, polyethylene glycol, polyurethane, ethyl silicate, silicon hydride coupling agent and diethylene glycol ether. 实验结果表明:聚乙烯醇、磷酸氢二钠、木糖醇、碳酸锂、聚乙二醇、聚氨酯、硅酸乙酯、硅烷偶联剂和二乙二醇乙醚等改性剂改性水玻璃均能提高微波硬化水玻璃砂的抗吸湿性。
Based on the results, anatase particles can be directly obtained by low-temperature aging method in ethanol/ water medium, and size-controllable titania particles were synthesized with ethyl glycol used as chelating agent in acetone medium. 结果表明,通过低温陈化方法,在乙醇/水体系中可制备锐钛矿型纳米二氧化钛粒子,而利用乙二醇作为钛酸正丁酯螯合剂,在丙酮体系中可制备粒径可控纳米二氧化钛粒子。