phenol

Hydroquinone monobenzyl ether;PBP;

英文别名： 4-(Benzyloxy)phenol;

cresylic acid, usually containing from 20 to 40 percent phenol, is the second solvent.

一般含20%～40%苯的甲是第二溶剂。

It is based on the catalytic effect of phenols for the oxidation of gallocyanin by sodium bromate in sulfuric acid medium.

在硫酸介质中,利用催化溴酸钠氧化花青的反应,联用顺序注射技术建立了顺序注射催化动力学光度法水中痕量的新方法。

Flavonoids,Phenols and triterpenes are the main constituent exist in Desmodium triquetrum(L.)DC.

中主要含黄酮类、类及三萜类等化学成分;

Research and development for fhe production of pyrocatechol and hydroquinone by reaction of phenol with hydrogen peroxide and percarboxylic acid as hydroxylating reagent are introduced.

着重介绍用过氧化氢和过氧化羧酸作羟基化剂,使苯羟基化生成邻苯二和对苯二的研究开发进展。

In order to get polyaryloxyphosphazene, polyphosphazene's side chlorines are directly substituted by aryloxy of phenol using triethylamine as the bind acid agent.

然后以三乙胺为缚酸剂，使高聚氯化磷腈直接与类化合物进行取代反应，合成了标题高聚物。

A new camphol sandaliol was synthetized by selective alkylation of isocamphol and phenol with acidic catalyst, and following hydrogenated in the presence of Raney nickel.

本文用异龙脑与苯在酸性催化剂作用下进行选择性烷基化反应,再经催化氢化还原得到龙脑檀香产品。

2. Tri(2,4,6-tribromophenyl) phosphite was synthesized with phenol, brome and phosphorus trichloride in the presence of pyridine.

本文介绍了在吡啶存在下,以苯、溴和三氯化磷为原料合成三(2,4,6-三溴苯)亚磷酸酯的方法.收藏指正

Active component： rose, natural plant phenol of grape seeds, bearberry glycoside、laevo-VC、crowtoe.

有效成份：玫瑰、葡萄籽天然植物多、熊果苷、左旋VC、百脉根。

Catalytic synthesis of phenetole by ethylation of phenol with diethyl carbonate(DEC)in fixed bed reactor was investigated.

以碳酸二乙酯(DEC)为乙基化试剂,与苯在气固相条件下催化合成苯乙醚。

It was found that the removel of phenol, CN , and COD in 40-60 C range is as high as mesophile temperature.

结果表明:嗜热菌在40～60℃内能有效地去除水中、氰和COD,活性比嗜温菌大,污泥沉降性能好,剩余污泥少。

The technique for preparing phenol formaldehyde resin from phenolated wood (PWF) and its characters were studied and analyzed.

本文研究了用化木材制备醛树脂的技术,并对其性能进行分析。

It is found that they exist in the form of phenol and phenoxide in solution .The ratios of the two forms and spectral behavior change with th...

实验结果显示,它们在溶液中以式和氧负离子式共存,且其2种形式的相对含量随介质的不同而改变,其光谱也随之变化。

The catechin, ursolic were determined by HPLC.The polysaccharide and tannide were determined by sulphoacid-phenol and complexometric titration methods respectively.

用HPLC法儿素和熊果酸，硫酸-苯法多糖，络合滴法鞣质的含量。

RESULTS Zhike syrup obviously prolonged the incubation period of coughing and increasel the bronchotracheal secretion of phenol red.

结果止咳露使咳嗽潜伏期延长,使气管红排泌量明显增加。

Chloroxylenol , a halogenated phenol, is a germicide that is effective against gram negative and gram positive bacteria, fungi, and yeast.

Chloroxylenol ，一个卤代，是一种有效的杀菌剂是对革兰氏阴性菌和革兰氏阳性菌，真菌和酵母。

Chloroxylenol ，一个卤代，是一种有效的杀菌剂是对革兰氏阴性菌和革兰氏阳性菌，真菌和酵母。

Chloroxylenol , a halogenated phenol, is a germicide that is effective against gram negative and gram positive bacteria, fungi, and yeast.

METHODS:The purified polysaccharides is determined by colourimetry with sulfuric acid phenol as colourimetric reagent.

结果和结论:得多糖的含量为65。

The primary synthetic methods of 4-hydroxycoumarin was reviewed starting from phenol, 2-acetylsalicylic acid, methyl salicylate, and o-hydroxyacetophenone respectively.

概述了4-羟基香豆素的合成方法，重点介绍了苯法，乙酰水杨酸法，水杨酸甲酯法，邻羟基苯乙酮法。