The process is carried out by taking organic acid and sulfoxide chloride as raw materials, acyl chloride synthesizing, reacting ethylenediamine with sodium chloroacetate to synthesize intermediate sodium EDDA, and reacting it with acyl chloride to synthesize the final product.

所述雙子烷基羧酸鹽表面活性劑是由以下方法制得的91人妻视频nnnnnn，以有機(jī)酸和氯化亞砜為原料首先進(jìn)行酰氯的合成jjzz在线播放，再用乙二胺與氯乙酸鈉反應(yīng)合成中間體乙二胺二乙酸鈉在线国产黄色片，將中間體乙二胺二乙酸鈉與酰氯反應(yīng)合成終產(chǎn)物日韩偷窥自拍系列视频在线播放网站。

With the yield of methyl monochloroacetate as evaluating standard,the synthesized condition of methyl chloroacetate was optimized through orthogonal experiment.

以氯乙酸母液和甲醇為基本原料国产一级一片免费播放放，固載磷鎢酸為催化劑欧美一区的网站在线观看，通過連續(xù)酯化的方法制備了氯乙酸甲酯；以氯乙酸甲酯的質(zhì)量收率為基準(zhǔn)国产免费午夜福利院网孕，采用三因素三水平正交實(shí)驗(yàn)的方法對(duì)酯合成的條件進(jìn)行了優(yōu)化91自拍日韩。

DCA, or dichloroacetic acid, is an analogue of acetic acid in which chlorine atoms replace two of the three hydrogen atoms on the methyl group.

DCA也叫二氯乙酸或二氯醋酸在线午夜福利网站，是一種類似乙酸的化合物，但乙基團(tuán)上有兩個(gè)氫原子被氯原子所取代久久WW黄色1级视品。

The silk-protein-like polymers could be dissolved in hexafluroisopropanol and strong organic acid (e. g., formic acid, dichloroacetic acid and trifluroacetic acid), while they showed a poor solubility in common solvents.

所合成的模擬聚合物難溶于通常溶劑色在线国产，但可以溶解在強(qiáng)酸溶劑（甲酸、二氯乙酸及三氟乙酸）和六氟異丙醇中18岁以下黄色网站；通過在二氯乙酸中25℃下的特性粘度測(cè)定而估算出聚合物的分子量在2～5萬之間精品一区二区三区人妻视频。

Monochloroacetic acid is a rather important chemical raw material and organic intermediate product, which is mainly manufactured by chloride of acetic acid using sulfur and anhydride acetic acid as catalyst.

氯乙酸是一種及其重要的化工原料和有機(jī)中間體，目前氯乙酸主要以硫磺或醋酐為催化劑進(jìn)行乙酸氯化生產(chǎn)而得黄色操逼视频网站。

Water samples were extracted and purified and collected by solid-phase extraction LC-18 column. Soil samples were extracted by ethyl acetate/petroleum ether (2:1, by vol) and purified by sulphonation. Wheat sample was extracted by acetonitrile/water (4:1, by vol) and purified and collected by SPE- Florisil column.

水樣直接用LC-18固相萃取小柱分離在线免费观看的黄页、凈化和富集；采用乙酸乙酯／石油醚（體積比2：1）振蕩提取激情文学激情图片，磺化法凈化亚洲高清乱码午夜电影网制服，測(cè)定土壤中氯氟吡氧乙酸殘留量；以乙腈／水（體積比4：1）為提取劑亚洲国产aaaaaaaa片，氟羅里硅土固相萃取小柱分離99久久国产超碰、凈化，測(cè)定小麥樣品中氯氟吡氧乙酸的殘留量最新在线精品国产福利。

A series of novel polyethylene glycol derivates was synthesized by esterification of chloroacetic acid with polyethylene glycol. Because of the good reactive activity of α-chlorin in the esters it can react with 5-fluorouracil, thus the conjugate can be obtained .

采用氯乙酸與不同分子量的聚乙二醇進(jìn)行酯化反應(yīng)得到氯乙酸聚乙二醇酯在线超碰，由于酯中的α-氯具有良好的反應(yīng)活性，將它再與抗癌藥物5-氟尿嘧啶結(jié)合制備了不同分子量的高分子前藥欧美特黄岛国片免费看。

And the application of glycollic acid in the fields of chemical cleaning, auxiliaries and materials were introduced in detail.

概述了羥基乙酸幾種主要工業(yè)合成方法的工藝條件及存在的主要問題91自拍视频国产精品，即氯乙酸水解法、氰化法免费黄色片999、甲醛羰基化法和一氯乙酸鉀水解法2021最新国产理论。

A brief account of technique conditions of several main technique routes for synthesizing glycollic acid and existing main problems in it are given.

概述了羥基乙酸幾種主要工業(yè)合成方法的工藝條件及存在的主要問題，即氯乙酸水解法在线无码观看黄片、氰化法尤物视频欧美性爱、甲醛羰基化法和一氯乙酸鉀水解法。

The effect factors on glycolic acid ratio were studied(reaction temperature,reaction time,and the ratio of catalyst to choloroacetic acid).

以氯乙酸和氫氧化鈉為主要原料全球持级黄毛片免费，碘化鈉為催化劑堿性水解法合成羥基乙酸第一中文字幕AV在线，并采用單因素法對(duì)影響因素進(jìn)行了研究，得到最優(yōu)化條件：反應(yīng)溫度90℃久久精品免费福利网，反應(yīng)時(shí)間8 h中文欧美福利，催化劑NaI用量為氯乙酸質(zhì)量的0.8%。