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.

youdao

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.

youdao

从氟代甲苯出发，以醋酸为溶剂，采用液相空气氧化法，在钴锰盐和1，1，2，2-四溴乙烷催化体系存在下，合成了氟代苯甲酸，采用升华方法进行精制。

Fluorobenzoic acids were prepared from fluorotoluenes through liquid phase air oxidation with acetic acid as solvent and Co~(2+)-Mn~(2+)-1, 1,2,2-tetrabromoethane as catalyst.

youdao

从氟代甲苯出发，以醋酸为溶剂，采用液相空气氧化法，在钴锰盐和1，1，2，2-四溴乙烷催化体系存在下，合成了氟代苯甲酸，采用升华方法进行精制。

Fluorobenzoic acids were prepared from fluorotoluenes through liquid phase air oxidation with acetic acid as solvent and Co~(2+)-Mn~(2+)-1, 1,2,2-tetrabromoethane as catalyst.

youdao