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1.acetic anhydride;
2.PRESENT SITUATION AND THE LASTEST DEVELOPMENT IN THE PREPARATION OF ACETIC ANHYDRIDE
制备的现状与新进展收藏指正
3.A STUDY ON THE KINETICS OF THE REACTION TO ACETIC ANHYDRIDE HYDROLYSIS BY USE OF CSTR
水解反应的宏观动力学探讨收藏指正
4.(1) The condensation of guaiacol with acetic anhydride using polyphosphoric acid (PPA) as catalyst gave either acetovanillone (Ⅰ) or the acetate of isoacetovanillone (Ⅱ), depending on the amount of acetic anhydride used.
(1)用PPA作接触剂使??木酚和进行?合,因用量不同得到?芍纸Y果:第一,当??木酚和之量为当量时,产物为香??乙酮(Ⅰ); 第二,当大过量时,产物为?香??乙酮(Ⅱ)的酯。收藏指正
5.Acetylene has become increasingly prominent as a raw material for a whole series of organic compounds, among them acetaldehyde, acetic acid, and acetic anhydride.
对于整个系列的有机化合物,包括乙醛、乙,乙炔已经成为越来越重要的原材料。收藏指正
6.The effects of acetic anhydride on the enzyme activity for the hydrolysis of pNP-NAG have been studied. The results show that acetic anhydride can lead to reversible non-competitive inhibition at appropriate concentrations,and the IC_ 50 is estimated to be 9.0 mmol/L.
表明在浓度低于20.0mmol/L,酶的抑制作用是可逆的,测得对酶抑制的IC50为9.0mmol/L.收藏指正
7.Acetate of potato starch can be produced by reaction between the starch and acetic anhydride in alkaline solution, then crosslinking acetated starch can be obtained by crosslinking reaction between acetated starch and crosslinking agent.
马铃薯原淀粉在水相体系、碱性条件下与作用,生成马铃薯淀粉酯,然后与交联剂进行交联反应,得到马铃薯交联淀粉酯。收藏指正
8.STUDY OF CHAIN TRANSFER TO ACETIC ANHYDRIDE IN THE POLYMERIZATION OF TETRAHYDROFURAN
四氢呋喃在苯中聚合向链转移的研究收藏指正
9.Scale inhibitors, composed of maleic anhydride-vinyl acetate-sodium allyl sulfonate copolymers(MAP) and aminocarboxylate chelants (PEPA) were synthesized in the lab to prevent the formation of sulfate scales in oil field water.
室内合成了处理油田水硫盐垢的马来 -乙烯酯 -烯丙基磺钠三元聚合物防垢剂MAP和氨羧溶垢剂PEPA。收藏指正
10.The effect of the catalysts, e.g., concd. sulfuric acid, p-toluenesulfonic acid, dodecylbenzenesul-fonic acid on the esterification of starch was studied with cassava starch as the raw material, acetic anhydride as the esterifying agent and acetic acid as the dispersion medium.
摘要以木薯淀粉为原料,用为酯化剂,以乙为分散递质,探索了以浓硫、对甲基苯磺、十二烷基苯磺为催化剂对淀粉酯化反应的影响。收藏指正
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