Industrial Maleic Anhydride High Purity Chemical Raw Material
Major Application Fields
In the chemical industry, maleic anhydride is a key raw material for producing unsaturated polyester resins (UPR). These resins have excellent mechanical properties, chemical resistance, and weather resistance and are widely used in the production of glass fiber-reinforced plastics (GFRP), such as boats, automotive parts, and wind turbine blades. Additionally, maleic anhydride can be used to synthesize alkyd resins, which have good gloss and durability and are widely used in the coatings and inks industries.
In the plastics industry, maleic anhydride is used to produce maleic anhydride-modified plastics. By copolymerizing with different monomers, maleic anhydride can improve the properties of plastics, such as increasing heat resistance and mechanical strength. For example, maleic anhydride grafted polystyrene, copolymerized with styrene, has excellent heat resistance and mechanical properties and is widely used in the electronics and automotive industries.
In the rubber industry, maleic anhydride is used to produce rubber additives. It can react with rubber to form cross-linked structures, enhancing the heat resistance and wear resistance of rubber. Maleic anhydride is also used to produce rubber vulcanizing agents and anti-aging agents, extending the service life of rubber products.
In the fragrance and pharmaceutical industries, maleic anhydride is used as an intermediate in organic synthesis. It can be used to synthesize a variety of fragrance compounds, such as diethyl maleate, which is widely used in perfumes and cosmetics. Additionally, maleic anhydride can be used to synthesize certain pharmaceutical intermediates, such as derivatives of maleic anhydride, for the production of antibiotics and cardiovascular drugs.
In water treatment, maleic anhydride is used to produce water treatment agents. It can react with calcium and magnesium ions in water to form insoluble precipitates, thereby reducing water hardness. Maleic anhydride can also be used to produce corrosion inhibitors and scale inhibitors to prevent corrosion and scaling in water systems.
Despite its wide range of applications, maleic anhydride is acidic and corrosive, and its use and storage require strict safety precautions. Maleic anhydride easily absorbs moisture in humid environments, so it needs to be stored in a sealed container. Additionally, solutions of maleic anhydride are somewhat corrosive, and appropriate protective equipment should be worn during use to avoid contact with skin and eyes. In industrial production, the use of maleic anhydride typically occurs in closed systems to minimize environmental impact.
Specifications
| Product Name | Maleic Anhydride | |||||||||
| Chemical Formula | C4H2O3 | |||||||||
| Molecular Weight | 98.06 g/mol | |||||||||
| Appearance | White briquettes | |||||||||
| Melting Point | 52.8°C | |||||||||
| Boiling Point | 202°C | |||||||||
| Density | 1.48 g/cm³ | |||||||||
| CAS NO | 108-31-6 | |||||||||
| HS Code | 2917140000 | |||||||||
| EINECS NO | 203-571-6 | |||||||||
| Application | Applied in unsaturated polyester resin, coatings, pesticides | |||||||||
Quality Control Sheet
| Product Name | Maleic Anhydride | ||||||
| ITEM | STANDARD VALUE（%） | TEST VALUE（%） | |||||
| Appearance | White briquettes | White briquettes | |||||
| Purity(by MA) | 99.5WT% min | 99.72WT% | |||||
| Molten Colour | 25APHA Max | 15APHA | |||||
| Solidifying Point | 52.5℃ Min | 52.6℃ | |||||
| Ash | 0.005WT% Max | ＜0.001WT% | |||||
| Iron | 3PPM Max | 0.32PPM | |||||
In summary
In summary, maleic anhydride, as an important organic chemical raw material, plays a key role in multiple industries. It not only enhances product performance and quality but also supports the development of modern industry. With continuous technological advancements, the application prospects for maleic anhydride will be even broader.