聚酯樹脂，醇酸樹脂，農藥，富馬酸，紙張處理劑等。馬來酸酐是一種重要的有機化學中間體，可用于制造塑料工業中的增塑劑。造紙工業中的紙張加工劑;合成樹脂工業中的不飽和聚酯樹脂;涂料工業中的醇酸涂料;中馬拉硫磷的合成;制藥行業磺胺藥。近年來，主要用作原料的琥珀酸和酒石酸工業迅速發展，它們在工程建設，食品調味劑和生物溶劑中的應用也在擴大。由馬來酸酐的下游衍生物，例如1，4-丁二醇，四氫呋喃，γ-丁內酯等也已得到很大發展。
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.
順丁烯二酸酐
Maleic anhydride
物化性質：室溫下為白色顆粒，針狀，薄片，棒狀，塊狀或團塊，具有強烈刺激性。相對密度1.48，熔點52.8°C，沸點202.2°C，在較低溫度(60-80°C)下也能升華，溶于乙醇，乙醚和丙酮，與水形成馬來酸。可燃物，其蒸氣和粉塵與空氣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
性質：無色針狀或粒狀晶體，溶于乙醇，氯仿和四氯化碳，微溶于水和乙醚。可用熱水將其水解為琥珀酸。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中規定的食品加工助劑，用于合成藥物，農藥，酯和樹脂，也可用于琥珀酸的合成和分析試劑。
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.
