查询词典 quaternary salt

The difference of ammonia, amido, amino group and quaternary ammonium salt, some common wrong expressions on them, and the valence state of phosphorus in some of its oxyacid were pointed out.

指出了氨、氨基、胺基及季铵盐的区别及其常见错误表述，以及磷的几种含氧酸中磷的价态，并着重指出没有"次亚磷酸"的叫法。

Quaternary ammonium salt was used as catalyst for transporting phenoxide ion between two phases to give benzyl phenyl ether and its derivatives in multiphase system.

在多相体系中，以铵盐为催化剂合成苄苯醚及其衍生物，产率高达91%，转化率达到98 3%。

Synthesis and application of polysiloxane quaternary ammonium salt are summarized here.

介绍了聚硅氧烷季铵盐抗菌整理剂的合成方法及其应用性能。

The difference of ammonia, amido, amino group and quaternary ammonium salt, some common wrong expressions on them, and the valence state of phosphorus in some of its oxyacid were pointed out.

指出了氨、氨基、胺基及季铵盐的区别及其常见错误表述，以及磷的几种含氧酸中磷的价态，并着重指出没有&次亚磷酸&的叫法。

The invention relates to a preparation and purification method of bicaudal gemellus quaternary ammonium salt type cationic surfactant.

本发明涉及一种双尾双子季铵盐型阳离子表面活性剂的制备及纯化方法。

Key words: natural polymer; multifunction water treatment reagent; isoquinoline quaternary ammonium salt; relative viscosity.

关键词］天然高分子；多功能水处理剂；异喹啉季铵盐；相对粘度

By weight loss measurements and electrochemical method, the inhibition and adsorption behavior of isoquinoline quaternary ammonium salt on A3 steel in 1mol/L HCl was studied.

采用失重、电化学法研究了异喹啉季铵盐在 1mol/L盐酸溶液中对A3钢的缓蚀行为及吸附规律。

Main compositions: Quaternary ammonium salt, ahurian Angelica Root, menthone and Tannic Acid.

主要成份：季铵盐、白芷、薄荷酮及鞣酸等，内含天然渗透性因子。

These products include sodium percarbonate, percarbamide, 4Na 2SO 4·2H 2O 2·NaCl adduct, tertiary amine oxides, hydrazine hydrate, dihydroxy benzene, quaternary ammonium salt hydrogen peroxide and methylethyl ketone oxime.

介绍了近期国外过氧化氢在部分化学品合成中应用研究新进展，产品包括过碳酸钠、过碳酰胺、4Na2 SO4·2H2 O2 ·NaCl加合物、叔胺氧化物、水合肼、二羟基苯、季铵盐过氧化氢和甲乙酮肟。

A new imidazolinyl intermediate is prepared from phenylacetic acid and diethylenetriamine firstly, and then they react with the solution of sodium chloroacetate into the imidazolinyl quaternary ammonium salt.

以二甲苯为溶剂，苯乙酸和二乙烯三胺为原料，经酰胺化和环化脱水合成了新型咪唑啉化合物，并用氯乙酸钠溶液对其进行改性得到了苯乙酸咪唑啉季铵盐。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。