純凈狀態下的順酐為無色或白色固體，同時帶有難聞的氣味。并且它是一個了不起的分子，因為它具有兩種類型的化學官能團，所以使得它在化學合成和應用中非常有用。其次，作為一種多種的化學中間體，使得它在化學工業的多個領域中都有應用。
The maleic anhydride in pure state is colorless or white solid, with bad smell. And it's a remarkable molecule, because it has two types of chemical functional groups, which makes it particularly useful in chemical synthesis and applications. Secondly, as a variety of chemical intermediates, it has applications in many fields of chemical industry.
通常工廠會向裝有迪安-斯達克榻分水器、冷凝器和機械攪拌器的燒瓶中加入116克順酐和120毫升四氯乙烷。然后將內容物加熱，將水作為共沸物蒸出，并將殘余物在減壓下蒸餾，從而得到純度約為89.5％的酸酐。接下來，會將其加熱到較高的溫度，從而得到較高純度的順酐。
Normally, 116 grams of maleic anhydride and 120 ml of tetrachloroethane are added to a flask equipped with a dean stark water separator, condenser and mechanical stirrer. Then the contents were heated, water was evaporated as azeotrope, and the residue was distilled under reduced pressure to obtain anhydride with purity of about 89.5%. Next, it is heated to a higher temperature to obtain maleic anhydride with higher purity.
同時由于其特殊的特性，使得順酐被廣泛的運用于制造不飽和聚酯樹脂的雜環化合物。并且順酐還擁有廣泛的其它應用，例如：它用于合成表面活性劑、殺蟲劑、除草劑和殺真菌劑等產品。
At the same time, because of its special characteristics, maleic anhydride is widely used in the manufacture of unsaturated polyester resin heterocyclic compounds. And maleic anhydride also has a wide range of other applications, such as: it is used in the synthesis of surfactants, pesticides, herbicides and fungicides and other products.
