anhydride

arsenous acid anhydride...

亚砷酸酐,

4-Methyl tetrahydro phthalic anhydride;

甲基四氢邻苯二甲酸酐;

In the presence of catalyst phosphoric acid,isomeric addition of bipentene with cis-butenedioic anhydride can form terpenyl bu tenedioic anhydride compound as expoxylite firming agent.

磷酸做催化剂，催化工业双戊烯与顺丁烯二酸酐进异构加成反应。

The synthetic technique of new type high molecular ashless dispersant of polybutene (PBP) and dimaleic anhydride was described.

介绍了新型高分子聚异丁烯双马来酸酐无灰分散剂的合成工艺。

Acetylsalicylic acid was synthesized from salicylic acid and acetic anhydride catalyzed by chloride acidation bentonite.

以杨酸和乙酸酐为原料,在自制酸化膨润土催化下合成了阿司匹林;

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。

Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride in an overall yield of 23.4%.

以氯苯和邻苯二甲酸酐为起始原料，经四步工序合成马吲哚，总收率为23．4％。

The test for treatment of waste water from acetic acid and acetic anhydride production by using anaerobic digestion-aerophile biochemical method is described.

介绍对醋酸、醋酐生产中的有机废厌氧好氧生化处理方法的试验。

In this paper, the synthesis of 2 - chloranthraquinone and 2 - aminoanthraquinone was studied.It was prepared from phthalic anhydride by acetyiation, hydrolysis and cyclization.

以苯酐和取代苯为原料,经过乙酰化、解及环合反应,合成了2-氯蒽醌和2-氨基蒽醌,并对影响收率的工艺条件进了研究。

The diisoamyl glutarate in catalysis of silicotungsticacid was preparated by esterification of isoamyl alcohol and glutaric anhydride seperated from dicarboxylic acid.

硅钨杂多酸为催化剂,以从二羧酸中分离出的戊二酸酐和异戊醇为原料合成了戊二酸二异戊酯。

Amino phthalhydrazide was synthesized from phthalic anhydride by four steps of nitrationidehydration, hydrazinolysis and reduction reactions in this paper.

以邻苯二甲酸酐为原料,经硝化、脱、肼化、还原等步骤合成了3-氨基邻苯二甲酰肼。

The optimum technological conditions for the synthesis of lemonile were: molar ratio n(citral oxime)∶n(acetic anhydride)=1∶.

从山苍子提取出的柠檬醛,与硫酸羟胺反应生成柠朦肟,脱后可得到柠檬腈。

Acylation activity of hydroxyl groups in methyl cholicate has been determined by the use of methacryloyl chloride, methacryloyl anhydride and methacrylic acid as the acylating agents.

以甲基丙烯酰氯、甲基丙烯酸酐和甲基丙烯酸作酰化剂，研究了胆酸甲酯分子中羟基的反应活性。

it expounds method of benzene anhydride monochloride production by liquid phase air oxidation with mixed o-xylene monochloride as raw material.

论述了以混合单氯代邻二甲苯为原料,液相空气氧化法制取单氯代苯酐的方法。

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。

3.In the presence of acetic acid and polyethylene glycol, chromic anhydride and acenaphthene react under mild condition and acenaphthene can completely convert into acenaphthenone.

在醋酸、聚乙二醇存在下 ,铬酸酐和苊在温和的条件下反应 ,苊可以完全转化为苊酮。

This study focused on the recovery of aromatic polycarboxylic acids from the mother liquor of manufacturing trimellitic anhydride and it's application for making mixed plastifier.

本研究对生产偏酐所产生的母液中含有的芳香族羧酸加以回收，于生产混合酯增塑剂。