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順酐:目前次于苯酐和醋酐的第三大酸酐，主要用于不飽和聚酯樹脂、醇酸樹脂。

Maleic anhydride: currently the third largest anhydride after phthalic anhydride and acetic anhydride, mainly used in the production of unsaturated polyester resin and alkyd resin.

另外還用于農藥、醫藥、涂料、油墨、潤滑油添加劑、造紙化學品、紡織品整理劑、食品添加劑以及表面活性劑等領域。

In addition, it is also used in fields such as pesticides, pharmaceuticals, coatings, inks, lubricant additives, papermaking chemicals, textile finishing agents, food additives, and surfactants.

以順酐為原料可以1，4-丁二醇（BOD)、v-丁內酯(GBL）、四氫呋喃（THF)、馬來酸、富馬酸和四氫酸酐等一系列重要的有機化學品和精細化學品，開發利用前景十分廣闊。

A series of important organic and fine chemicals, such as 1,4-butanediol (BOD), n-butyrolactone (GBL), tetrahydrofuran (THF), maleic acid, fumaric acid, and tetrahydroanhydride, can be produced from maleic anhydride as a raw material. The development and utilization prospects are very broad.

我國2003年表觀消費量約為21.1萬噸。其消費結構為:不飽和聚酯樹脂對順酐的需求量約占總需求量的71.1%，涂料約占6.2%，酒石酸約占3.8%，潤滑油添加劑約占0.9%，農用化學品約占1.4%，琥珀酸及斷約占2.4%，BDO、TFH等加氫產品約占2.8%，其他方面約占11.4%。

The apparent consumption in China was approximately 211000 tons in 2003. Its consumption structure is as follows: the demand for maleic anhydride in unsaturated polyester resin accounts for about 71.1% of the total demand, coatings account for about 6.2%, tartaric acid accounts for about 3.8%, lubricating oil additives account for about 0.9%, agricultural chemicals account for about 1.4%, succinic acid and succinic acid account for about 2.4%, hydrogenation products such as BDO and TFH account for about 2.8%, and other aspects account for about 11.4%.