acetic anhydride

1. This may be readily converted to the anhydrous salt by reaction with a readily hydrolysed material, such as acetic anhydride.
   这和易水解的物质如醋酸酐反应可以很容易转变为无水盐。
2. Sulfur method replaced by acetic anhydride method for chloroacetic production is the trends in domestic.
   指出在国内用醋酐法代替硫磺法生产氯乙酸的必然趋势。
3. Oxidation desulphurization of coker gas oil by H_2O_2/ acetic anhydride Depressive Effect of Polyacrylate ( PA) Pour Point Depressant on Waxy Crude Oils
   双氧水/乙酸酐对焦化蜡油的氧化脱硫作用聚丙烯酸酯降凝剂对含蜡原油降凝规律的研究
4. Preparation for cassava starch acetate with low degree of substitution by acetic anhydride
   醋酸酐制备低取代度木薯淀粉醋酸酯醋酸纤维素模制材料
5. The hydrophobic gardenia blue pigment was prepared with the water-soluble gardenia blue pigment esterified by acetic anhydride, and catalyzed by hydrochloric acid.
   以浓盐酸为催化剂，采用乙酸酐酯化处理水溶性栀子蓝色素，制备了憎水性栀子蓝色素。
6. Study on the pilot plant of carbonylation of multicomponent to synthesize acetic anhydride and acetic acid
   多组分羰基合成醋酐联产醋酸的模试研究
7. The p-nitroacetanilide was synthesized by using p-nitroaniline, acetic anhydride and acetic acid as raw materials.
   以对硝基苯胺、乙酸酐和乙酸为原料合成对硝基乙酰苯胺。
8. Reserch on Tar Component in Carbonylation Synthesis for Acetic Anhydride
   羰基合成醋酐工艺中焦油生成机理的探索
9. Acetylation of hydroxy radical catalyzed by Zn ( AcO)_2 using acetic anhydride as solvent
   在乙酸酐为溶剂条件下Zn（AcO）2催化的羟基乙酰化反应
10. Monochloroacetic acid was prepared by using acetic anhydride or sulfur as catalysts to chlorinate acetic acid respectively. Ceramics, which contain compounds of Both metallic and nonmetallic elements, are usually relatively resistant to severe mechanical, thermal, and chemical conditions.
    对以醋酐为催化剂和以硫磺为催化剂的醋酸氯化合成氯乙酸的优劣进行了比较研究。陶瓷是由金属和非金属元素的化合物构成，通常能抗恶劣的机械、温度和化学环境。
11. The time for the reaction to go to completion depends on both the amount of catalyst and acetic anhydride used.
    该酰化反应进行到完全所需的时间取决于催化剂用量和乙酐用量。
12. The yields of peracetic acid is studied from two different preparation methods using hydrogen peroxide and acetic acid or acetic anhydride.
    比较了用乙酸和乙酸酐分别与过氧化氢反应制备所得的过氧乙酸的浓度。
13. The regioselective nitration of toluene and chlorobenzene with nitrates and supported nitrates on solid acid catalysts and supports in the presence of acetic anhydride is studied.
    该文讨论了应用固体酸催化剂和载体，在醋酐存在下，采用硝酸盐和载体硝酸盐硝化甲苯和氯苯的选择性。
14. The effects of the amount of catalyst, the amount of acetic anhydride, reaction time, and addition of solvents etc. on the acylation reaction were investigated.
    考察了催化剂用量、乙酐用量、应时间和溶剂的加入等因素对该酰化反应的影响。
15. Study on Hydrolyzing and Modifying Brown Rapeseed Isolated Protein by Enzymes and Acetic Anhydride
    褐变菜籽分离蛋白质酶水解及乙酰化修饰研究
16. Study of chain transfer to acetic anhydride in the polymerization of tetrahydrofuran
    四氢呋喃在苯中聚合向醋酸酐链转移的研究
17. The kinetics of esterification of linalool with acetic anhydride was studied.
    研究了芳樟醇与乙酸酐酯化反应动力学。
18. The synthesis of γ-n-pentyl-butyrolactone in one step reaction using γ-heptene, acetic anhydride as raw materials, manganic acetate as oxidizing agent, and glacial acetic acid as solvent has been investigated.
    用α-庚烯、醋酐作原料，以醋酸锰作氧化剂，在冰醋酸溶剂中一步合成γ-壬内酯。
19. Effect of Calcination Conditions on Activity of Ni-Sn-Cr/ AC Catalyst in Vapor Phase Carbonylation of Methyl Acetate to Acetic Anhydride
    焙烧条件对Ni-Sn-Cr/AC催化乙酸甲酯气相羰基化合成醋酐反应性能的影响
20. Study on Treating with Acid and Surface Modification by Acetic Anhydride for Cellulose
    纤维素的酸处理及醋酸酯化表面改性研究
21. Methanol is a basic organic chemical raw material, which can be used to synthesize dimethyl ether, formaldehyde, HAc and acetic anhydride, etc.
    甲醇是基本有机化工原料，可进一步加工为二甲醚、甲醛、醋酸、醋酐等。
22. Use: It is used for chemical reagents, pharmaceutical, electroplating and other fields, also used as food additives, meat preservatives, and raw materials of acetic anhydride.
    用作化学试剂，医药，电镀等领域。用作食品添加剂、肉类防腐剂、制乙酸酐的原料。
23. The effects of acylating agents, acetic anhydride and ketene on synthesis of linalyl acetate from linalool were studied.
    阐述了乙酸酐和乙烯酮作为酰化剂对芳樟醇合成乙酸芳樟酯反应的影响；
24. Innovation on process of chloroacetic acid by acetic anhydride method was introduced.
    介绍了醋酐法氯乙酸生产工艺的改进。
25. N acetyl morpholine is synthesized with morpholine and acetic anhydride as raw materials.
    对以吗啉和醋酐为原料，在脱水剂的作用下合成N乙酰吗啉进行了研究。
26. Acetylation of thiophene, obtained in coke-oven benzene extraction-purification process, with acetic anhydride over solid-acid catalysts was investigated.
    采用固体酸催化剂，以乙酸酐和精制焦化苯工艺过程中得到的浓缩噻吩为原料合成了2-乙酰噻吩。
27. Sulfonated EPDM ionomers ( S-EPDM) were prepared with concentrated sulfuric acid and acetic anhydride.
    用浓硫酸和醋酸酐与三元乙丙橡胶（EPDM）反应制备了磺化三元乙丙橡胶离聚物（S-EPDM）。
28. The synthesis of cellulose esters using acetic anhydride as a co reagent of fatty acid was studied.
    采用乙酸酐为共反应剂合成了纤维素高级脂肪酸酯。
29. Acetyl salicylic acid was synthesized from salicylic acid and acetic anhydride catalysed by pyridine.
    用吡啶催化剂，以水杨酸和乙酸酐为原料合成乙酰水杨酸。

noun

1. a compound that is needed in order to refine opium into heroin