This paper introduces in detail the factors influencing the yield of the amino acetic acid with the chloroacetic acid ammonolysis process, and connecting with the production procedures, makes deep analysis, and puts forward some corresponding methods for increasing the yield.

詳細介紹了氯乙酸氨解法氨基乙酸生產(chǎn)過程中影響收率的因素，并結(jié)合生產(chǎn)過程進行了深入分析18禁止黄片，有針對性地提出了提高收率的辦法国产专区系列。

When the molar ratio of 2 chloroacetic acid∶ p chlorophenol is 1.25 and pH=5～7 at 104 ℃ reaction for 20 min in the 20% NaOH solation,the yield of PCPA can be reached 90%.

氯乙酸∶對氯苯酚為 1 2 5 ，質(zhì)量分數(shù)為 0 2的氫氧化鈉溶液中激情免费视频，pH值在 5～ 7之間亚洲美女淫荡视频，溫度在 10 4℃左右為宜，反應(yīng)時間為 2 0min 无码精品一区二区福利视频，PCPA收率為 90 3%。

The productions of glycin oxidation are complicated and the cost is high. The cyanogenesis is poisonous and unsafe.

國內(nèi)外合成羥基乙酸的方法主要有甘氨酸氧化法久久久久久久久久久久网、氰化法久久精品电影久久、醛類羧化法、甲醛和甲酸甲酯偶聯(lián)法黄色视频久久免费、草酸電解法中文强奸视频网址、氯乙酸水解法等。

Six derivatives of 4-phenyl-3-phenoloxymethyl-5-mercapto-1,2,4-triazlyole were synthesized from phenoloxyacetyl hydrazide by two-steps reaction under microwave irradiation, then reacted with 2-chloroacetic acid to give six novel derivatives of 2-(3-phenoxymethyl-4-phenyl-[1,2,4]triazole-5-thio)-acetic acid.

在微波輻射條件下美女羞羞高潮视频免费首页，芳氧乙酰肼經(jīng)兩步反應(yīng)制得4-苯基－3-芳氧甲基－1久久坐盗欧美自制性爱视频，2，4-三唑－5-硫酮衍生物在线看日本，再與氯乙酸反應(yīng)得到6種尚未見文獻報道的2-（3-芳氧甲基－4-苯基－1日韩毛片免费一区二区，2，4-三唑－5-硫基）乙酸衍生物人人操人人插人人搞。

On the basis of the development of a new CE method for the analysis of α-lactalbumin,β-lactoglobulin A and β-lactoglobulin B, different concentrations of acetic acid and trichloroacetic acid for the removal of proteins in raw milk, infant formula A and B, and yogurt were investigated.

建立了毛細管電泳法分析α-乳白蛋白国产性爱一级视频、β-乳球蛋白A及β-乳球蛋白B的方法，考察了不同濃度冰乙酸及三氯乙酸對原料奶火热福利视频导航、嬰兒配方奶粉A和B及酸奶中蛋白的去除效果欧美精品一区二区三区在钱。

The surface hydroxyl group onto magnetic polyvinyl acetate nanoparticles can be obtained by saponification reaction on their surface.

結(jié)果表明，磁性聚苯乙烯顆粒與丁二酸酐發(fā)生Freidel-Crafts趸仆局形淖帜唬基化反應(yīng)日本黄网址免费在线观看，可以在顆粒表面引入少量羧基；磁性聚甲基丙烯酸甲酯顆粒分別與乙二醇官方网a片视频播放、二縮三乙二醇亚洲国产一区二区乱999、聚乙二醇等發(fā)生醇-酯交換反應(yīng)，可以在顆粒表面接枝不同分子鏈長度的末端羥基亚洲国产福利精品；磁性聚醋酸乙烯酯顆粒經(jīng)過醇解或皂化反應(yīng)可以獲得表面羥基91三级毛片在线观看不卡无风险；磁性聚丙烯酸甲酯顆粒通過乙二胺或1，6己二胺的胺解反應(yīng)可以得到表面氨基又黄又大又粗的视频，繼而與一氯乙酸反應(yīng)可以引入亞胺二乙酸基團无码粉嫩小泬无套在线观看免费。

Production technology of synthesis of allantoin are reviewed, including glyoxal oxidation, electrochemical synthesis, calcium glyoxylate synthesis, dichloroacetic acid synthesis, acetochloral method, and oxidative decarboxylation.

評述了乙二醛氧化法国产又狠又黄精品视频、電化學(xué)法、乙醛酸鈣法亚洲中文久久精品无码无卡、尿素三氯乙醛合成法特级黄色一级片、尿酸二氯乙酸法和尿酸氧化脫羧法等合成尿囊素的各種工藝。

By single factor experiment,experiment studied on the effect on the dosage of NaOH717理论午夜福利电影、CHPTMA又硬又大又爽又无遮挡的视频、sodium chloroacetate 、temperature and time to reaction.

并通過單因素實驗討論了NaOH用量欧美特级婬片免费播放口、氯乙酸鈉用量国产精品大陆、3-氯-2-羥丙基三甲基氯化銨用量、反應(yīng)溫度和反應(yīng)時間等對合成反應(yīng)的影響亚洲中文字幕一区二区三区营。

Ethyl phenoxyacetate has been synthesised by the reaction of phenol with ethyl chloroacetate under the condition of solid-liquid phase transfer catalysis using PEG-400 as the catalyst.

于固一液相轉(zhuǎn)移催化條件下国产乱轮性爱，以PEG-400為催化劑，通過苯酚與氯乙酸乙酯反應(yīng)合成了苯氧基乙酸乙酯欧美性爱网站啊啊啊。與85％的水合肼作用得到相應(yīng)的酰肼欧美性爱男人皇宫。

The article introduced that α-Naphthaleneacitic acid was synthesized from naphthalene and chloroacetic acid in presence of aluminium powder.

介紹了萘和氯乙酸在鋁粉催化下合成α—萘乙酸的研究。