乙酸

It is easily soluble in water, acetone and alcohol, slightly soluble in ether, ethyl acetate, chloroform, and pyridine, unsoluble in benzene.

熔点151℃～154℃。易溶于水、丙酮与醇，微溶于醚、乙酸乙酯、氯仿和吡啶，不溶于苯。

Various fractions of tannins with different polarities and relatively narrow molecular weight distribution were obtained by extractions using ether and ethyl acetate sequently.

通过乙醚和乙酸乙酯萃取可得到极性不同的组分。分析表明，各级分的分子量分布范围不同，且相对较窄。

Thus, 3 mol of Ethyl acetoacetate were treated with 2 mol of formaldehyde to yield 80% of I.

用2摩尔的甲醛处理3摩尔的乙酰乙酸乙酯可得到80%的I。

According to the thermal analysis, the thermal stability were greatly improved than the europium complex.

热分析结果表明当铕萘乙酸配合物掺入后热稳定性得到提高。

The catalysts for the combustion of ethyl acetat ewer eprepared using Fe,Co,Cu,Cr,and Mn metal oxides as active components supported on Al2O3-Ce0.5Zr0.5O2 mixed oxides and characterized by X-ray diffraction,temperature programmed reduction,oxygen storage capacity measurement,BET surface area,XPS measurement,and activity test.

制备了Fe，Co，Cu，Cr和Mn金属氧化物催化剂，所用载体为Al2O3-Ce0.5Zr0.5O2复合氧化物。利用X射线衍射，程序升温还原，储氧量测试，BET比表面测试和光电子能谱表征了催化剂。并利用活性测试表征了各种催化剂对乙酸乙酯催化燃烧能力。

The paper introduces method and step of determination formic acid and acetic acid in exhaust gas by ion chromatography.

阐述了离子色谱法测定废气中甲酸、乙酸含量的方法和步聚。

Influence of different carbon substrates （acetate, glucose, peptone and fecula） on the formation and characteristics of aerobic granules in Sequencing Batch Reactor is studied.

研究了不同的碳源基质（乙酸钠、葡萄糖、蛋白胨、淀粉）对序批式活性污泥法反应器中形成的好氧颗粒污泥的外观形态和特性的影响。

Influence of different carbon substrates(acetate,glucose,peptone and fecula) on the formation and characteristics of aerobic granule s in Sequencing Batch Reactor is studied.

研究了不同的碳源基质(乙酸钠、葡萄糖、蛋白胨、淀粉)对序批式活性污泥法反应器中形成的好氧颗粒污泥的外观形态和特性的影响。

Vitamin A and its derivatives are important medicine as well feedstuff, in which VA acetate is the most important.

维生素A及其衍生物是一类重要的药品和饲料添加剂，最常用的维A衍生物是其乙酸酯。

Potassium ferricyanide and dithiothreitol were used to control redox potential from －100 mV to －450 mV in 3 L fermenter.

在3 L发酵罐上利用铁氰化钾和二硫苏糖醇调节发酵体系氧化还原电位值在－100～－450 mV，结果表明－350 mV为菌体生长和产丁二酸的最佳电位，丁二酸生产速率由0.75 g/提高到1.18 g/，产物丁二酸与副产物乙酸的质量浓度比由2.5提高到3.9。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新