acetone and ethyl acetate的意思|示意

Results: the purity of tannins can be as high as reach 75% when it's extracted with 60% acetone and purified with ethyl acetate, and the process has good reproducibility.

结果：以60%丙酮为溶剂进行提取，以乙酸乙酯为溶剂进行纯化，鞣质纯度可达到75%左右，且重复性较好。

Then, chose acetone, ethyl acetate, xylene and dimethylformamide according to solubility parameter close principle as solvents to dissolve coating finishing agents.

然后利用相似相溶原理选择了四种有机溶剂进行剥离实验：丙酮、二甲苯、二甲基甲酰胺及乙酸乙酯。

Among all components, the activities of Ethyl acetate and Acetone extracts were excellent marked by the active components highly concentrated.

其中乙酸乙酯组分和丙酮组分活性尤其突出，表明有高活性成分富集其中。

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。

The quality of tall oil is greatly improved by refining the crude sulfate soap using ethyl acetate and hexane-acetone.

通过用乙酸乙酯和已烷—丙酮萃取精制硫酸盐皂。

The result shows that, on over 2.5 times content of Daidzin in materials can be arrived with the hybrid extraction of acetone and ethyl acetate.

结果表明， 丙酮和乙酸乙酯的组合萃取可以将原料中大豆黄苷的含量提高2 .5倍以上。