• 醇和乙酸为原料,甲苯磺酸作催化剂甲苯为带水剂,合成三醋酸甘油

    Glycerol triacetate was synthesized from glycerol and acetic acid using p -toluene sulphonic acid as catalyst and toluene as water-carrying agent.

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  • 然后利用相似相原理选择了四种有机溶剂进行剥离实验:丙酮甲苯、二甲基甲酰胺乙酸

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

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  • 目的建立溴芬酸原料二氯甲烷、甲苯1,2-二甲氧基乙烷、乙酸乙醇残留量测定方法

    Objective To establish a method for detection of dichloromethane, 1,2-dimethoxyethane, toluene, ethyl acetate and ethanol in bromfenac sodium.

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  • 本研究采用乙酸溶剂甲苯磺酸为催化剂,提高了反应速度产物质量。

    The use of ethyl acetate as solvent and p-toluene sulfonic acid as a catalyst has increased the reaction rate and the product yield.

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  • 系统研究TBP萃取剂,乙酸甲苯石油煤油为稀释剂,酸度盐酸溶液中萃取

    Extraction of Gallium from high concentration HCl solution using organic phases which composes of TBP and butyl acetic ester, xylene, petroleum ether and kerosene, respectively, are investigated.

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  • 目的:研究一个同时测定空气中苯甲苯甲苯乙酸乙酸有机毒物检测方法,用以对新装修旅店客房有机毒物含量分析。

    Result:Organic poisons such as benzene, xylene, methylbenzene, ethyl acetate and butyl acetate could be separated effectively by column FFAP, the ralative standard deviation of the method was 1.

    youdao

  • 目的:研究一个同时测定空气中苯甲苯甲苯乙酸乙酸有机毒物检测方法,用以对新装修旅店客房有机毒物含量分析。

    Result:Organic poisons such as benzene, xylene, methylbenzene, ethyl acetate and butyl acetate could be separated effectively by column FFAP, the ralative standard deviation of the method was 1.

    youdao

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