ethyl acetate的例句大全

A method of synthesis of 2,3,4,5 tetrahydro 3 oxo 4 amino 6 methyl 1,2,4 triazine 3 cyanopyridine from ethyl acetate with the yield of 60.4% followed by the synthesis of pymetrozine with a yield of 93.1% and purity of 96.7%.

研究了乙酸乙酯法合成中间体2,3,4,5四氢3氧4氨基6甲基1,2,4三嗪（以下简称氨基三嗪酮），3氰基吡啶法合成吡蚜酮。中间体合成收率60.4%，产品合成收率93.1%，产品纯度96.7%。

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Technological Conditions Selection of Synthesizing Ethyl Acetate by Reactive Distillation Method

反应精馏法合成乙酸乙酯工艺条件的选择

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The UV-Vis and fluorescence spectroscopy results reveal that anhydrous ethanol with coordination agents is the best mobile phase, which is efficient for the fluorescence properties of terbium oxide organic colloids, and cyclohexanone and ethyl acetate are found to be not suitable for this system;

UV-Vis和荧光光谱的测试表明：以含有修饰剂的无水乙醇作为流动相，可得到良好荧光性能的氧化铽乙醇溶胶，而环己酮与醋酸乙酯均不适合作为该体系的流动相；

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Synthesis of Ethyl Acetate Catalyzed by Tin Tetrachloride

四氯化锡催化合成乙酸乙酯

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Extraction tests were made with Grade ⅱ a activated silica gel. The ratio of the sample to the adsorbent was 1:30. In the two eluants, the ratio of ethyl acetate or acetone to benzene depended on the elution order.

提制试验是用Ⅱa级活性硅胶进行的，样品与硅胶之比为1：30。在两种洗脱剂系统中，乙酸乙酯或丙酮对苯的比例根据试验的洗脱顺序而定。

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Data Processing of Reaction Rate Coefficient in Ethyl Acetate Saponification

乙酸乙酯皂化反应速率系数测定数据处理方法

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The Dragon Tower Asymmetric Autocatalysis The ethyl acetate is synthesized in reaction distillation column with acid natural zeolite as catalyst.

以酸性天然沸石为催化剂，在催化反应精馏塔中进行了合成乙酸乙酯的研究。

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Studies on Salt Effect to the Saponification Reaction Rate Constant of Ethyl Acetate

盐效应对乙酸乙酯皂化反应速率常数的影响

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Measurement of Reaction Rate Constant in Ethyl Acetate Saponification

乙酸乙酯皂化反应速度常数测定实验研究

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Synthesis of ethyl acetate using catalytic reaction distillation

催化反应精馏技术连续制备乙酸乙酯

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Synthesis of Ethyl Acetate by Catalytic Reaction Distillation with Acid Natural Zeolites as Catalyst

天然丝光沸石催化反应精馏合成乙酸乙酯

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Content of isocyanate group in waterborne polyurethane prepolymer is tested with acetone as solvent, n-dibutylamine-toluene solution as reaction liquid and ethyl acetate as thinner.

对水性聚氨酯预聚体中异氰酸酯基团的容量测定进行了研究。

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The antifeedant ratio of ethyl acetate extract to Spodoptera litura ( Fabricius) was higher than that of petroleum ether extract and normal butanol extract.

乙酸乙酯对斜纹夜蛾的拒食率都高于石油醚萃取物和正丁醇萃取物，三种不同萃取物拒食率次序是：乙酸乙酯正丁醇石油醚。

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Usually, ethyl acetate was used as the recrystallization solvent of lactide.

实验室一般用乙酸乙酯作溶剂对丙交酯重结晶，这一过程会造成大量的乙酸乙酯废液；

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The product in acetone, glacial acetic acid soluble in ethanol or ethyl acetate dissolved in chloroform or ether, slightly soluble;

本品在、冰醋酸中易溶，在乙醇或醋酸乙酯中溶解，在氯仿或乙醚中微溶；

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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。

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By xylene-induced mouse ear edema model and the NO inflammation model, the extraction and polarity fraction of the anti-inflammatory activity were screened, and the ethyl acetate was found to be the active fraction. 3.

以二甲苯致小鼠耳肿胀模型和NO炎症模型，对楮实子总提物和各极性部位进行抗炎活性筛选，筛选出乙酸乙酯部位为楮实子的活性部位。

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Study on the Synthesis of Ethyl Acetate Catalyzed by Aminosulfonic Acid

氨基磺酸催化合成乙酸乙酯

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A wide bore HP-fast GC residual solvent column was performed, and the effects of the equilibrium temperature and equilibrium time on the determination of ethyl acetate were studied.

试验采用大口径HP-快速GC残留溶剂柱为分离柱，对顶空平衡温度、平衡时间对残留有机溶剂乙酸乙酯测定的影响进行了分析研究。

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Result: Two compounds were isolated from the petroleum ether and ethyl acetate fractions of the flower and identified as tetracosanoic acid and quercitrin.

结果：从合欢花石油醚和乙酸乙酯部分得到2个化合物，鉴定为二十四烷酸和槲皮甙。

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