顺酐:目前次于苯酐和醋酐的第三大酸酐，主要用于不饱和聚酯树脂、醇酸树脂。

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.

另外还用于农药、医药、涂料、油墨、润滑油添加剂、造纸化学品、纺织品整理剂、食品添加剂以及表面活性剂等领域。

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.

以顺酐为原料可以1，4-丁二醇（BOD)、v-丁内酯(GBL）、四氢呋喃（THF)、马来酸、富马酸和四氢酸酐等一系列重要的有机化学品和精细化学品，开发利用前景十分广阔。

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.

我国2003年表观消费量约为21.1万吨。其消费结构为:不饱和聚酯树脂对顺酐的需求量约占总需求量的71.1%，涂料约占6.2%，酒石酸约占3.8%，润滑油添加剂约占0.9%，农用化学品约占1.4%，琥珀酸及断约占2.4%，BDO、TFH等加氢产品约占2.8%，其他方面约占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%.