聚酯树脂，醇酸树脂，农药，富马酸，纸张处理剂等。马来酸酐是一种重要的有机化学中间体，可用于制造塑料工业中的增塑剂。造纸工业中的纸张加工剂;合成树脂工业中的不饱和聚酯树脂;涂料工业中的醇酸涂料;中马拉硫磷的合成;制药行业磺胺药。近年来，主要用作原料的琥珀酸和酒石酸工业迅速发展，它们在工程建设，食品调味剂和生物溶剂中的应用也在扩大。由马来酸酐的下游衍生物，例如1，4-丁二醇，四氢呋喃，γ-丁内酯等也已得到很大发展。
Production of polyester resin, alkyd resin, pesticide, fumaric acid, paper treatment agent, etc. Maleic anhydride is an important organic chemical intermediate, which can be used to manufacture plasticizers in plastic industry. Paper processing agent in paper industry; Unsaturated polyester resin in synthetic resin industry; Alkyd coatings in coating industry; Synthesis of malathion in production; The pharmaceutical industry produces sulfa drugs. In recent years, succinic acid and tartaric acid industries, which are mainly used as raw materials, have developed rapidly, and their applications in engineering construction, food flavoring agents and biological solvents are also expanding. Downstream derivatives produced from maleic anhydride, such as 1,4-butanediol, tetrahydrofuran, γ- Butyrolactone has also been greatly developed.
顺丁烯二酸酐
Maleic anhydride
物化性质：室温下为白色颗粒，针状，薄片，棒状，块状或团块，具有强烈刺激性。相对密度1.48，熔点52.8°C，沸点202.2°C，在较低温度(60-80°C)下也能升华，溶于乙醇，乙醚和丙酮，与水形成马来酸。可燃物，其蒸气和粉尘与空气混合形成爆炸性混合物。
Physicochemical properties: at room temperature, it is white particles, needle, sheet, rod, block or mass, with strong irritation. The relative density is 1.48, the melting point is 52.8 ° C and the boiling point is 202.2 ° C. It can also sublimate at a lower temperature (60-80 ° C). It is soluble in ethanol, ether and acetone and forms maleic acid with water. Combustible, its vapor and dust are mixed with air to form explosive mixture.
琥珀酸酐
Succinic anhydride
性质：无色针状或粒状晶体，溶于乙醇，氯仿和四氯化碳，微溶于水和乙醚。可用热水将其水解为琥珀酸。mp119.6;bp261oC，d1.503。
Properties: colorless needle or granular crystal, soluble in ethanol, chloroform and carbon tetrachloride, slightly soluble in water and ether. It can be hydrolyzed to succinic acid by hot water. mp119.6; bp261oC，d1.503。
用途：GB2760-90中规定的食品加工助剂，用于合成药物，农药，酯和树脂，也可用于琥珀酸的合成和分析试剂。
Uses: food processing aids specified in gb2760-90 are used for the synthesis of drugs, pesticides, esters and resins, and also for the synthesis and analysis of succinic acid.
