以丙三醇和乙酸为原料,用对甲苯磺酸作催化剂,甲苯为带水剂,合成三醋酸甘油酯。
Glycerol triacetate was synthesized from glycerol and acetic acid using p -toluene sulphonic acid as catalyst and toluene as water-carrying agent.
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。
Then, chose acetone, ethyl acetate, xylene and dimethylformamide according to solubility parameter close principle as solvents to dissolve coating finishing agents.
目的建立溴芬酸钠原料中二氯甲烷、甲苯、1,2-二甲氧基乙烷、乙酸乙酯、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.
本研究采用乙酸乙酯为溶剂,对甲苯磺酸为催化剂,提高了反应速度和产物质量。
The use of ethyl acetate as solvent and p-toluene sulfonic acid as a catalyst has increased the reaction rate and the product yield.
系统研究了以TBP为萃取剂,乙酸丁酯、二甲苯、石油醚、煤油为稀释剂,从高酸度盐酸溶液中萃取镓。
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.
目的:研究一个能同时测定空气中苯、甲苯、二甲苯、乙酸乙酯、乙酸丁酯等有机毒物的检测方法,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.
目的:研究一个能同时测定空气中苯、甲苯、二甲苯、乙酸乙酯、乙酸丁酯等有机毒物的检测方法,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.
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