純凈狀態(tài)下的順酐為無色或白色固體，同時(shí)帶有難聞的氣味。并且它是一個(gè)了不起的分子，因?yàn)樗哂袃煞N類型的化學(xué)官能團(tuán)，所以使得它在化學(xué)合成和應(yīng)用中特別有用。其次，作為一種多種的化學(xué)中間體，使得它在化學(xué)工業(yè)的多個(gè)領(lǐng)域中都有應(yīng)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(huì)向裝有迪安-斯達(dá)克榻分水器、冷凝器和機(jī)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(nèi)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(huì)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(shí)由于其特殊的特性，使得順酐被廣泛的運(yùn)用于制造不飽和聚酯樹脂的雜環(huán)化合物。并且順酐還擁有廣泛的其它應(yīng)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(chǎn)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.
