研究了用无溶剂重结晶法提纯2 ，6二氯甲苯。
Purification of 2,6 dichlorotoluene by the recrystallization method without solvent was studied.
间苯二酚水溶液与三氯甲苯反应可制备紫外线吸收剂UV—214。
UV absorber, UV -214 can be prepared by reading resorcinol with benzotrichloride in water.
采用循环伏安法研究了不同电极上在1，2-二氯乙烷溶液中邻甲苯胺的电子转移性质。
We have investigated the electron-transfer properties of o-toluidine in 1 , 2-dichloroethane in different electrode with cyclic voltammetry.
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.
一缩二乙二醇对邻氯甲苯和对氯甲苯相对挥发度影响的机理还需进一步探讨。
The mechanism of the effect of diethylene glycol on o -, p-benzol chloride system needs further investigating.
目的了解常见医院感染病原菌对对氯间二甲苯酚的抗力。
Objectives To know the resistance of common nosocomial infection pathogens to P-chloro-m-xylenol(PCMX).
介绍了以二氯乙烷或液溴为溶剂制取五溴甲苯的方法及其优缺点。
The preparation of pentabromotoluene was effected by utilizing dichloroethane and liquid bromine as reaction solvent, and their advantages and defects were pointed out.
方法采用二甲苯致小鼠耳肿胀、角叉菜胶致大鼠足肿胀和小鼠热板法模型观察双氯芬酸钾喷雾剂的抗炎、镇痛作用。
METHOD the effects were observed in the following models, xylene induced swelling of mouse ear, carrageenin induced paw edema in rat and hot-plate procedure in mice.
对较难处理的硝基甲苯废水，通过试验表明，采用复合二氧化氯处理该废水效果较理想。
Mononitrotoluene wastewater is difficult to be treated. The experiment indicates the result of using compound chlorine dioxide generator to this wastewater treatment is satisfactory.
研究对甲苯磺酰氯与乙二醇制备单对甲苯磺酸乙二醇酯的合成工艺。
Toluene-4-sulfonic acid 2-hydroxy-ethyl ester was synthesised by p-toluenesulfonyl chloride with glycol.
采用毛细管气相色谱法，以外标法测定枸橼酸托烷司琼中乙醇、二氯甲烷、氯仿、四氢呋喃、二烷、吡啶和甲苯的含量，用串联的HP -1 0。
A simple capillary GC method for the determination of residual ethanol, dichloromethane, chloroform, tetrahydrofuran, 1, 4 dioxane, pyridine and toluene in tropisetron citrate was established.
采用毛细管气相色谱法，以外标法测定枸橼酸托烷司琼中乙醇、二氯甲烷、氯仿、四氢呋喃、二烷、吡啶和甲苯的含量，用串联的HP -1 0。
A simple capillary GC method for the determination of residual ethanol, dichloromethane, chloroform, tetrahydrofuran, 1, 4 dioxane, pyridine and toluene in tropisetron citrate was established.
应用推荐