马来酸酐，简称顺酐，亦称“顺丁烯二酸酐”，是顺丁烯二酸的酸酐。室温下为有酸味的无色或白色固体，分子式C4H2O3。分子量98.06。由氯仿或乙醚中得针状结晶。熔点60℃，沸点82℃(Chemicalbook1.8665kPa)，相对密度1.31460。溶于丙酮、氯仿、乙醚,微溶于石油醚。溶于水中生成顺-丁烯二酸，溶于酒精中则形成酯，能与含有共轭双键的化合物进行双烯合成反应。有毒，强烈刺激粘膜。

Maleic anhydride, abbreviated as maleic anhydride, also known as maleic anhydride, is the anhydride of maleic acid. At room temperature, it is a colorless or white solid with a sour taste, with the molecular formula C4H2O3. Molecular weight 98.06. Needle shaped crystals obtained from chloroform or ether. Melting point 60 ℃, boiling point 82 ℃ (Chemicalbook 1.8665kPa), relative density 1.31460. Soluble in acetone, chloroform, and ether, slightly soluble in petroleum ether. Dissolve in water to form maleic acid, dissolve in alcohol to form esters, and can undergo diene synthesis reactions with compounds containing conjugated double bonds. Toxic, strongly irritating to mucous membranes.

马来酸酐可发生的反应有：水解生成顺丁烯二酸（cis-HO2CCH=CHCO2H），1:1醇解生成单酯：cis-HO2CCH=CHCO2CH3；用作狄尔斯Chemicalbook-阿尔德反应中的亲双烯体；与低价金属配位，配合物的例子如Pt(PPh3)2(MA)及Fe(CO)4(MA)。马来酸酐进行光化学二聚体反应时，形成CBDA。。

The reactions that can occur with maleic anhydride include hydrolysis to produce maleic acid (cis HO2CCH=CHCO2H), 1:1 alcoholysis to produce monoesters: cis HO2CCH=CHCO2CH3; Used as a diene in the Diels Chemicalbook Alder reaction; Examples of coordination compounds with low valence metals include Pt (PPh3) 2 (MA) and Fe (CO) 4 (MA). During the photochemical dimerization reaction of maleic anhydride, CBDA is formed..

马来酸酐用途：

Application of maleic anhydride:

1、用作生产1,4-丁二醇、γ-丁内酯、四氢呋喃、琥珀酸、不饱和聚酯树脂、醇酸树脂等的原料，也用于医药和农药。

1. Used for the production of 1,4-butanediol γ- Raw materials such as butyrolactone, tetrahydrofuran, succinic acid, unsaturated polyester resin, alkyd resin, etc., are also used in medicine and pesticides.

2、顺丁烯二酸酐又名顺酐、马来酐、失水苹果酸酐，是一种重要的不饱和有机酸酐基本原料，在农药生产上用于合成有机磷杀虫剂马拉硫磷的中间体顺丁烯二酸二乙酯、哒嗪硫磷的中间体Chemicalbook1-苯基-3，6-二羟基哒嗪，以及拟除虫菊酯杀虫剂胺菊酯、剂、克菌丹的中间体，此外，还用于生产不饱和聚酯树脂、油墨助剂、造纸助剂、涂料以及医药工业、食品工业等。

2. Maleic anhydride, also known as maleic anhydride, maleic anhydride, or dehydrated malic anhydride, is an important basic raw material for unsaturated organic anhydrides. It is used in the production of pesticides to synthesize the intermediate of organic phosphorus insecticide malathion, diethyl maleic acid, the intermediate of pyridazinon, Chemicalbook1-phenyl-3,6-dihydroxypyridazine, as well as the intermediate of pyrethroid insecticides such as pyrethroids, fungicides, and clotriman. In addition, it is also used in the production of unsaturated polyester resins, ink additives, paper additives, coatings, as well as pharmaceutical and food industries.

3、主要用于生产不饱和聚酯树脂、醇酸树脂、农药马拉硫磷、低毒农药4049、长效碘胺的原料。也是涂料、马来松香Chemicalbook、聚马来酐、顺酐-苯乙烯共聚物。也是生产油墨助剂、造纸助剂、增塑剂和酒石酸、富马酸、四氢呋喃等的有机化工原料。

3. Mainly used as raw materials for the production of unsaturated polyester resin, alkyd resin, pesticide malathion, high-efficiency and low toxicity pesticide 4049, and long-acting iodamine. It is also a coating, maleic rosin chemicalbook, polymaleic anhydride, maleic anhydride styrene copolymer. It is also an organic chemical raw material for the production of ink additives, papermaking additives, plasticizers, and tartaric acid, fumaric acid, tetrahydrofuran, etc.

4、用于有机合成，也用作合成纤维中间体。

4. Used in organic synthesis and also as an intermediate in synthetic fibers.

5、金属选矿中充当捕收剂。

5. Serve as a collector in metal beneficiation.

接枝，是指大分子链上通过化学键结合适当的支链或功能性侧基的反应，所形成的产物称作接枝共聚物。马来酸酐的重要作用就是用来接枝。如果您想进一步了解马来酸酐，

Grafting refers to the reaction of chemical bonding between appropriate branches or functional side groups on macromolecular chains, resulting in a product called graft copolymer. The important role of maleic anhydride is to be used for grafting. If you would like to further understand maleic anhydride,

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Thank you for reading. The source of this article is from the manufacturer of maleic anhydride. For more information and questions, please click: http://www.jnjhhg.cn We will continue to work hard to provide you with services. Thank you for your support!