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- A one-pot process catalyzed by Mg-Al composite is used to synthesize 1,2-propylene glycol diacetate(PGDA) by inserting propylene oxide (PO) into acetic anhydride(AA) directly. 用Mg-Al基复合物催化环氧丙烷(PO)一步嵌入乙酸酐(AA)合成了1,2-丙二醇二乙酸酯(PGDA),经红外光谱、电喷雾质谱鉴定得到了预期产物。
- Influence of pH on Yield of DPT Prepared Without Acetic Anhydride. 非醋酐法合成DPT与pH值的关系
- Subject to control the chemicals acetic anhydride, ephedrine etc. . 受管制化学品乙酸酐、麻黄碱等.
- Add the crystalline dihydrate(5g)to acetic anhydride(10??in a beaker. 向盛有10?蟠姿狒?的烧杯内加入5g二水合物结晶。
- 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。
- 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。
- 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、乙酸、醋酸酐,乙炔已经成为越来越重要的原材料。
- 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)。
- The experiment used acetic oxide to dispose of the pollen in honey of Sesaaum Indcum and Fagopyrum esculentum to distinguish the quality of honey. 本文以芝麻蜜、荞麦蜜为材料 ,以醋酸酐分解法为手段 ,探讨了利用蜂蜜中的花粉来鉴别蜂蜜质量优劣的问题。
- By the improved method, proglumide was synthesized in acetic anhydride with toluene as the dehydrating agent. 本文报道合成抗溃疡药丙谷胺的改进工艺。
- An alcohol evaporator for production of acetic acid and acetic anhydride exploded during operation. 一种用于生产醋酸和醋酸酐的酒精蒸发釜在服役中发生了爆炸。
- Abstract: The kinetics of esterification of linalool with acetic anhydride was studied. 摘 要: 研究了芳樟醇与乙酸酐酯化反应动力学。
- New progress for phenylacetone synthesis from organic zinc reagent and acetic anhydride was studied. 实验研究了以氯化苄为原料合成药物中间体苯基丙酮的新工艺。
- Acetyl-isolongifolene was prepared by C-acetylation reaction with isolongifolene and acetic anhydride. 以异长叶烯和醋酐为原料,经乙酰化反应合成乙酰基异长叶烯。
- In October 1988, the relevant government departments issued a document on the control of exports of acetic oxide, ether and chloroform, which can be used for synthesis of heroin and other narcotic drugs. 中国有关部门于1988年10月发文,对醋酸酐、乙醚、三氯甲烷三类可供制造海洛因等毒品的化学品实行出口管制。
- DME is a preferred substitute for chlorofluorocarbons and can derive a number of products with high value such as dimethyl carbonate,acetic acid,acetic anhydride and formaldehyde. 二甲醚是氯氟烃的替代品,用它可以开发一系列高附加值产品,例如碳酸二甲酯、醋酸、醋酐、甲醛等;
- In October 1988,the relevant government departments issued a document on the control of exports of acetic oxide,ether and chloroform,which can be used for synthesis of heroin and other narcotic drugs. 中国有关部门于1988年10月发文,对醋酸酐、乙醚、三氯甲烷三类可供制造海洛因等毒品的化学品实行出口管制。
- In this paper, 1,1-Diacetate was synthesized from furfural and acetic anhydride by acidic bentonite friendly to environment as catalyst with excellent yield(87.6%). 摘要利用对环境友好的酸性皂土做催化剂,糠醛与乙酸酐发生缩合反应合成了1;1-二乙酸酯,产率高达86.;6%25。
- In this paper,1 acetylaminoanthraquinone was synthesized by using 1 aminoanthraquinone and acetic anhydride as starting materials and by using acetic acid as solvent. 本文以1?氨基蒽醌和乙酐为原料,乙酸作溶剂,合成了1?乙酰氨基蒽醌。
- By analysis to the old flow of alcoholysis liquid waste processing.In our work. a new flow was set up.The product of acetic oxide can be obtained by the technology of rectification and carbonylation. 对现有醇解废液处理的工艺进行了分析并提出了一种新的醇解废液处理工艺,通过萃取精馏将醋酸甲酯提纯,再利用羰基化合成技术生产醋酐产品。