1. It is used as raw material for the production of 1,4-butanediol, γ-butyrolactone, tetrahydrofuran, succinic acid, unsaturated polyester resin, alkyd resin, etc., and also used in medicine and pesticides.
2. Acting as a collector in metal beneficiation.
3. Used in organic synthesis, and also used as a synthetic fiber intermediate.
4. Maleic anhydride is an important basic raw material of unsaturated organic acid anhydride. It is used in the production of pesticides to synthesize the intermediates of the organophosphorus insecticide malathion, diethyl maleate and pyridazinphos. Intermediate 1-phenyl-3,6-dihydroxypyridazine, as well as intermediates of pyrethroid insecticide tetramethrin, fungicide, captan. In addition, it is also used to produce unsaturated polyester resin and ink Auxiliaries, papermaking auxiliaries, coatings, pharmaceutical industry, food industry, etc.
5. Mainly used to produce raw materials for unsaturated polyester resin, alkyd resin, pesticide malathion, high-efficiency and low-toxic pesticide 4049, and long-acting iodoamine. It is also paint, maleic rosin, polymaleic anhydride, maleic anhydride-styrene copolymer. It is also an organic chemical raw material for the production of ink additives, paper additives, plasticizers, tartaric acid, fumaric acid, and tetrahydrofuran.
6. Maleic anhydride is a commonly used important basic organic chemical raw material. It is the third largest raw material for acid anhydride in the world after acetic anhydride and phthalic anhydride. Its downstream products have quite extensive development and application prospects. It is mainly used to synthesize unsaturated polyester resin, which is a raw material for manufacturing automobile parts, ships, corrosion-resistant chemical equipment and daily necessities. Maleic anhydride (108-31-6) is also an important intermediate for the production of lubricant additives, coatings, pesticides, fumaric acid, copolymers, and food additives. Its hydrogenated derivatives include succinic anhydride, 1.4-butanediol, r-J lactone and tetrahydrofuran.
