研究了微波辐射作用下丝光沸石催化氯乙酸与异戊醇的酯化反应。
Isoamyl chloroacetate is synthesized from chloroacetic acid and isoamyl alcohol with mordenite as catalyst and benzene as water carrying agent under the irradiation of microwave.
本文报道在苯—氢氧化钠水溶液中,由苯酚和氯乙酸缩合制取苯氧乙酸的良好结果。
This work introduces nice results for the preparation of phenoxyacetio acid in benzene-sodium hydroxide aqueous system through condensation of phenol with chloroacetic acid.
从理论上分析了硫磺法生产的氯乙酸溶于水后的溶液混浊的原因,并找出了解决办法。
It is theoretically analyzed that why the water solution formed by the liquor from chloroacetic acid produced by sulphur catalyst method is turbid, and the solutions are found out.
以苯酚和氯乙酸为原料,四丁基碘化铵为催化剂合成了苯氧乙酸,收率达96 2 %。
Phenoxyacetic acid was synthesized with phenol and chloroacetic acid as raw material and tetrabutylammonium iodide as catalyst, the yield can reach 96.2%under the optimun conditions.
主要分别介绍用亚硫酸钠与氯乙酸乙酯合成磺酸乙酸钠和亚硫酸钠与氯乙酸合成磺酸乙酸钠。
A method for synthesizing sodium sulfoacetic is discussed, which sodium sulfoacetic is synthesized with sodium sulfite and ethyl monochloro acetate, with sodium sulfite and chloroacetic acid.
在有无硫酸铁水合物催化剂的情况下,分别测定了2-氯乙酸与六种伯醇的酯化反应速率常数;
The rate constants of esterification of 2-chloroacetic acid with 6 species of the primary alcohols were determined in the presence of and in the absence of catalyst, the hydrate of ferric sulphate.
今后市场对高纯度氯乙酸产品的需求将保持旺盛,含量在98%以下的低纯度产品市场将日益缩减。
For the future, the demand of high-purity chloroacetic acid will be strong, the market of low-purity products with content being less than 98% will increasingly drop.
香鳞毛蕨擦剂可促进鼠尾鳞片表皮模型颗粒层形成,可改善三氯乙酸所致兔耳痤疮模型的表面症状。
Results Dryopteris fragrans liniment can promote the granulations formation of rattail scaled epidermis model and improve symptoms of rabbit ear acne model.
本文介绍了氯乙酸的合成技术进展情况以及可制造的下游产品,并对今后几年的市场消费进行了预测。
This article mainly introduced the synthesizing technology of chloroacetic acid and the downstream products could be manufactured, forecasted the market consumption for the following years.
指出我国传统的硫磺法氯乙酸生产工艺要进一步节能降耗、提高产品质量及治理环境,以提高竞争力。
The chloroacetic acid traditional production process by sulfur method should be improved for competition, including energy efficiency, products quality improvement, and environment control.
结论:二氯乙酸是肝细胞的DNA损伤剂,致癌作用可能与其dna损伤作用有关,属于遗传致癌物。
Conclusion: DCA is an agent of DNA damage to hepatocyte, and belongs to genetic carcinogen. Its carcinogenesis may be related with its action of inducing DNA damage.
结果表明,生物样品加入三氯乙酸去蛋白后即可直接进样上机检测,在优化分离条件下,环丙沙星富集倍数可达600倍。
The sample pretreatment required only the precipitation of protein contents, and allowed up to 600-fold accumulation concentration of ciprofloxacin under the selected conditions.
氯乙酸作为一种重要的有机化工中间体,广泛应用于农药、医药、染料、CMC、香料、食品防腐剂和多种精细化工产品中。
Monochloroacetic acid is an important organic chemical intermediates, which is widely used in pesticides, medicine, dyes, CMC, spices, food preservatives and various fine chemical products.
反应后甲烷磺酸亚铈经过简单的相分离就可重复使用,用甲烷磺酸亚铈催化合成其它氯乙酸酯,酯化率均在98 0%以上。
And the cerous methanesulfonate an be reused by simple phase-separation. Cerous methanesulfonate can be used as the catalyst in synthesizing other chloroacetate, the yield is over 98.0%.
氯乙酸是一种重要的有机化工原料,对皮肤具有较强的腐蚀性,可经破损皮肤吸收,引起脑、肝、肾、肺、心脏等多种器官损害。
Chloroacetic acid is an important material used in the organic-chemistry industry. It has strong corrosiveness to skin and can cause brain, liver, kidney, lung and myocardium injuries via burned skin.
在环流反应器中考察了光照下不同反应温度对乙酸氯化反应的影响,实测了不同温度下,乙酸、氯乙酸和二氯乙酸的浓度随反应时间的变化关系。
The effects of different temperature on the chlorination of HAc were researched. The relations between the concentration of HAc, MCA and DCA and time were measured.
398中性蛋白酶3种食品级内切蛋白酶对牦牛血红蛋白进行酶解,以水解度及三氯乙酸可溶性氮为评价指标,采用酶解-活性炭法对水解液进行脱色,筛选出AS1。
398 to hydrolysis yak hemoglobin by degree of hydrolysis and TCA-NSI as the evaluation index, and this experiment adopts hydrolysis-activated carbon method to decolourization, and neutrase AS1.
398中性蛋白酶3种食品级内切蛋白酶对牦牛血红蛋白进行酶解,以水解度及三氯乙酸可溶性氮为评价指标,采用酶解-活性炭法对水解液进行脱色,筛选出AS1。
398 to hydrolysis yak hemoglobin by degree of hydrolysis and TCA-NSI as the evaluation index, and this experiment adopts hydrolysis-activated carbon method to decolourization, and neutrase AS1.
应用推荐