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Hydroxycitric acid is obtained by aconitic acid with oxidation,which is obtained by citric acid with dehydration. 该文以柠檬酸为原料,经过脱水制取乌头酸,再由乌头酸氧化制取羟基柠檬酸。
Aconitic acid content in sorghum stem juice was controlled by 2group genes,Frequency of gene distribution was unbalanced. 高粱茎秆汁液中乌头酸的含量受两组基因控制。基因的分布频率不均衡。
Microspheric trans aconitic acid imprinted polymers were synthesized via a precipitation polymerization with acetonitrile as dispersion solvent. 以乙腈为分散剂,采用沉淀聚合法合成了反乌头酸分子印迹聚合物微球。
N-Carboxy-alanine acid anhydride (NCA) was synthesized by L-alanine and Triphosgen. 摘要利用L-丙氨酸和三聚光气反应制备了N-羧基-丙氨酸-环内酸酐(NCA)。
Phosphorus Pentoxide, also called Phosphoric Acid Anhydride, is a white, spiculate crystal. 五氧化二磷又名磷酸酐，白色针状晶体。
The organic compounds are mainly benzoic acid anhydride, benzophenone, and so on. 生成的有机化合物成分比较复杂,主要成分有苯甲酸酐、二苯甲酮等。
Compared with the amine curing agent, the casting epoxy resin cured by the acid anhydride has higher flashover voltage. 实验结果表明:酸酐固化的试样比胺类固化试样闪络电压要高；
The effects of the poly(l,2-butadiene) oligomer carboxylated with maleic acid anhydride (MLPB) on the cork powder filled NBR and on the IIR recipes were researched in this paper. 本文简要介绍了马来酸酐化聚丁二烯(MLPB)在软木填充丁腈橡胶制品和丁基橡胶配方改性中的应用效果。
Maleic anhydride is the important organic chemical material, is the third largest acid anhydride behind the phthalic anhydride and acetic anhydride. 顺丁烯二酸酐，简称顺酐或者马来酐，是重要的有机化工原料，是仅次于苯酐和醋酐的第三大酸酐。
Abstract: The simuhaneous determination of organic acids, such as oxalic acid, aconitic acid, malic acid and citric acid by capillary electrophoresis was discussed. 文章摘要: 研究了毛细管电泳法分离测定草酸、乌头酸、苹果酸、柠檬酸等有机酸的条件。
Phthalein acid anhydride Photophobic pharmaceutical and has special protective action on the ultraviolet ray. It can cure sunlight dermatitis, eczema, etc. 酞酐避光剂，对紫外线具有特殊的保护功效，可治疗日光性皮炎，湿疹等。
A lot of decomposition products are formed, such as dioxoimidazole, dioxopiperazine, acid anhydride, cyanuric acid, ammonium, four, five and six-membered ring lactam etc. 可能产生二氧咪唑环、毗嗪二酮、尿氰酸、铵盐及四元环、五元环和六元环内酰胺结构的产物。
Keywords Microspheric molecularly imprinted polymer;cis and trans aconitic acid;precipitation polymerization;batch adsorption method; 分子印迹聚合物微球;顺、反乌头酸;沉淀聚合法;振荡吸附法;
The adhesive made of epoxy resin, polyazelaic acid anhydride, 2,4-methylimidazole and modified agent.It can be solidified quickly at the middle temperature. 以环氧树脂、酸酐、咪唑等为主要原料并添加改性剂，配制了一种能在中温下快速固化的胶粘剂；
In this paper, the various kinds of accelerators which were used for curing epoxy resin with acid anhydride, and the accelerative mechanism in the epoxy resin curing system were introduced. 摘要评述了几类用于酸酐固化环氧树脂的促进剂及其在酸酐/环氧体系中的固化促进机理。
Arsenous oxide;Arsenic trioxide;Arsenious acid anhydride;White arsenic;acide arsenieux;anhydride arsenieux; ... 氧化亚砷;三氧化二砷;亚砷酐;砒霜;白砒香港
The plasticizer-butyl benzyl phthalate(BBP) is synthesized by orthogonal experiments designed using benzoic acid anhydride, butanol and benzyl chloride with cetyltrimethyl ammonium bromide(CTMAB) as phase transfer catalyst. 以CTMAB为相转移催化剂,苯酐、正丁醇和苄氯为原料合成BBP的新方法。通过设计正交实验,对原料配比、反应时间、催化剂用量、pH值和加水量等影响因素以及催化剂的回收利用进行了研究。
The effects of the poly(1,2-butadiene)oligomer carboxylted with maleic acid anhydride(MLPB) on the cork powder filled with NBR and on the IIR formula were researched in this paper. 简要介绍了马来酸酐化聚丁二烯(MLPB)在软木填充丁腈橡胶制品和丁基橡胶配方改性中的应用效果。
Acylation by acid chloride or acid anhydride and DCC methods were involved in the preparaion to avoid the tedious operation of isolation, because the pure compound could be prepared by the routine crystallization. 为避免各步反应产物不易分离带来的麻烦,分别用酰氯法、酸酐法和DCC法合成这些化合物,用常规结晶方法即可精制产物。
Keywords Scale inhibitor;Aconitic acid;Copolymer;Biodegradation; 阻垢剂;乌头酸;共聚物;生物降解;