However, it was less stable to negative ions, reluctant, vitamin C, sodium benzoate, potassium sorbate, etc.

The principle and condition of synthesis Isopropyl benzoate with catalyst of ferric chloride was researched.

探讨了氯化铁催化合成苯甲酸异丙酯的反应条件及机理.

Synthesis ofp-nitro-ethyl benzoate with benzene sulfonic acid as catalyst is reported.

以苯磺酸为催化剂,实现了对硝基苯甲酸与乙醇反应合成对硝基苯甲酸乙酯.

A method was developed to determine residue of emamectin benzoate in vegetables.

建立了一种柱前衍生–高效液相色谱测定蔬菜中甲氨基阿维菌素残留量的方法.

Objective : To study the psychological effect of long-term caffeine sodium benzoate use.

目的: 探讨 长期 烫吸安钠咖对心理状态的影响.

The products were analyzed simultaneously using ethyl benzoate ( EB ) as internal standard.

以苯甲酸乙 酯 为内标物,一次性同时分析了塔釜产物中各组分含量.

The crude, wet benzoate ( 118 grams ) was disslolved with reflux in 1,400 ml methanol.

将粗制 、 湿的苯甲酸酯 ( 118克 ) 回流着溶于140毫升甲醇中.

The crude, wet benzoate ( 118 grams ) was dissolved with reflux in 1 , 400 ml methanol.

将粗制 、 湿的苯甲酸酯 ( 118克 ) 回流着溶于1400毫升甲醇中.

Methods: Benzocaine was synthesized from p-nitrobenzoic acid via two steps through esterifying and reduction.

方法: 以对硝基苯甲酸为起始原料,经酯化,还原两步合成苯佐卡因.

OBJECTIVE : To introduce the aspect of clinical evaluation and progress in non-benzodiazepine sedative hypnotic drugs.

目的: 介绍 非 苯二氮类镇静催眠药的研究进展与临床评价.

Results: The drug cost was increasing year by year, while the percentage of benzodiazepine ( BZ ) hypnotics DDDs was decreasing.

结果: 镇静催眠药的年度金额逐年增长,苯二氮卓类药物仍占主要市场,年度药物DDDs总数的比例有下降趋势.

Experimental results show that the apparent adsorption rate constant decreases with increasing substituted benzoic acids concentration.

实验结果表明表观吸附速率随取代苯甲酸浓度增大而降低.

Compared with benzoic acid and sorbic acid, Nipagin has a good market and development prospects.

通过与苯甲酸和山梨酸比较, 说明尼泊金酯具有良好的市场和发展前景.

Compound benzoic acid ointment is used in the treatment of fungal infections of the skin.

复合苯甲酸酸软膏被使用在皮肤的真菌感染的治疗.

Behavior of PSS aqueous solution was studied and its solubilization effect for benzoic acid was determined.

研究了PSS的溶液性质,测定了PSS对苯甲酸的增溶性.

The processes for manufacturing benzoic acid derivatives by exploitation of benzoic acid plants were introduced.

介绍了利用工业苯甲酸的生产装置开发、生产苯甲酸同系物的方法.

This change , while limited significance, was not seen administration of benzoic acid in a comparable manner.

这种变化虽然并不显着, 但以类似方式施用苯甲酸却看不到变化.

As organic acids , benzoic acid derivatives are common organic pollutants in natural water body.

苯甲酸类化合物是自然水体中的常见有机污染物,属于有机酸.

Benzoic acid is a kind of additive that does not allow to use in jelly.

苯甲酸是果冻中不允许使用的一种添加剂.

This paper discribes a factor analysis spectrophotometric method for measuring crystallose and benzoic acid in drinks.

本文研究了应用因子分析分光光度法同时测定饮料中糖精钠和苯甲酸的方法.

An overview of calibration materials used in thermal analysis-benzoic acid.

利用苯甲酸热量的分析对原料标校的概况.