查询词典 acetic acid

Diphenylbenzidine was synthesized by diphenylamine using glacial acetic acid and water as solvent in acidic condition.

摘 要：以二苯胺为原料，水和冰醋酸为溶剂，在酸性条件下一步合成二苯基联苯二胺，该方法具有操作简单，原料易得等优点。

Replaces the carbon dioxide with the acetic acid to carry on the disproportionation,The production rate and the purity have improved.

用醋酸代替二氧化碳进行歧化，产率和纯度均有所提高。

They were fed with medicine intragastrically. The earlap inflammation caused by bimethylbenzene, the effect on pain induced glacial acetic-acid, the influence on the penetrability of capillary vellset in the abdominal cacity and the weight of rat cotton-ball granuloma were observed. 2.Acute toxicity test: Twenty mice were fed with the rhinitis capsule solution of most concentration and volume by intragastrically. All the actions and the appearance of major organs were observed in twenty-four hours and one week.

分别灌胃给药，观察该药对小鼠二甲苯性耳壳炎症、冰醋酸致痛作用及冰醋酸致腹腔毛细血管通透性增高和大鼠棉球肉芽肿的影响。2、急性毒性实验：20只小鼠灌胃给以最大浓度和最大剂量鼻炎胶囊溶液，用药24小时和1周后观察动物的一切活动及各主要脏器的外观形态。

Results 1 .There were significant difference of the earlap inflammation caused by bimethylbenzene, the pain induced glacial acetic-acid, the penetrability of capillary vellsel in the abdominal cavity and the weight of rat cotton-ball granuloma between rhinitis capsule groups and vacant control groupp

结果 与空白对照组相比，大小剂量鼻炎胶囊组对小鼠二甲苯性耳壳炎症、冰醋酸致痛作用及其腹腔注射后导致毛细血管通透性增高和大鼠棉球肉芽肿均有抑制作用p

The experimental data also shows that the energy gap for electron transition of acetic acid molecules does not change in various molecular associations.

实验数据还表明：不同的分子缔合结构并不改变乙酸分子中的电子跃迁能级间隔。

Electropolar solvent such as THF may destroy the polyetherimide layer,while non-electropolar solvent such as petroleum ether cannot solve vinyl acetic acid cobalt.

极性溶剂如四氢呋喃会溶解PEI层，而非极性溶剂如石油醚又不能溶解丁烯酸钴。

N-methylacetamide was used as entrainer in separating acetic acid from water with extractive distillation ,and the interaction mechanism in this process was studied by using the density functional theory.

文献[1-4]认为萃取精馏分离乙酸水溶液过程中萃取剂与乙酸之间的氢键作用改变了溶液中乙酸和水的活度系数关系，从而改变了两者之间的相对挥发度，使得水和乙酸的分离变得相对容易。

The results show that the yield of butyl acetate using the catalysts prepared with the concentration of H2SO4 by 0.5 mol·l-1 and the calcination temperature of 550℃ is the best,which is up to 52.5% when the molar ratio of butyl alcohol to acetic acid is 1:1.3 and without addition of entrainer in the hermetic reactor.

结果表明采用硫酸浸渍液浓度为0.5mol/L，焙烧温度为550℃时所制备的催化剂在正丁醇和乙酸的物质的量比为1.3及不添加任何带水剂的密闭条件下酯化效果最好，酯化率为52.5%。

Particular reaction for the esterification of acetic acid and menthol is carried out.

对於醋酸与甲醇的酯化特定反应被推导出。

A method for determining contents of seven kinds of residual organic solvents such as methanol, ethanol, methylene chloride, ethyl aetate, toluene, tetrahydrofuran and acetic acid in a new pharmaceutical-developing (UP0044) was established by capillary gas chromatography.

建立了测定新药UP0044中甲醇、乙醇、二氯甲烷、乙酸乙酯、甲苯、四氢呋喃、乙酸7种有机溶剂含量的方法，以确定它们在药物中的残留量和比例。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。