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China and Germany are the leading exporters of diethyl maleate, collectively accounting for a majority of global shipments, while the United States, South Korea, and India represent the largest importers. Diethyl maleate prices have remained relatively stable amid consistent demand from polymer and pharmaceutical intermediates sectors. Exports from China have shown modest growth over the past two years, while U.S. imports have plateaued following a slight decline in 2023.
Diethyl maleate is a colorless to pale yellow liquid with a mild, fruity odor and moderate volatility; it has a boiling point of approximately 199–201 °C and a melting point near −19 °C. It is an unsaturated diester of maleic acid and is classified as an organic chemical intermediate. Primarily used in organic synthesis, it serves as a Michael acceptor in reactions such as Diels–Alder cycloadditions and conjugate additions, enabling the production of specialty chemicals, pharmaceuticals, and agrochemical intermediates. Its applications span pharmaceutical active ingredient synthesis, polymer modification (e.g., copolymerization with vinyl monomers), and the preparation of fine chemicals for coatings and functional materials.
Diethyl maleate is unsaturated polyester resins that are used in applications, such as reinforced glass fiber for boats, piping, bathtubs, roof panels, etc.,and as protective coatings, finishes, and lacquers.
colourless liquid
This chemical is included in Fine Chemicals. See more about what is Diethyl Maleate and Diethyl Maleate SDS information.
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