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Maleic anhydride (CAS 108-31-6)
Maleic anhydride (chemical formula C₄H₂O₃) is a cyclic anhydride of maleic acid.
It is a white crystalline solid at room temperature and has a characteristic pungent odor.
It is produced on a large scale industrially for use in coatings and polymers.
- Industrially, maleic anhydride is mainly produced on a large scale through n-butane gas phase oxidation.
- This process converts n-butane molecules into carboxylic anhydride structures through catalytic oxidation, and completes main chain dehydrogenation, ultimately generating maleic anhydride with conjugated double bonds.
- This route has become the current mainstream industrial production method in the world due to its high atom economy and environmental friendliness.
- In the early days, the oxidation method of benzene and other aromatic hydrocarbons was also used to prepare it.
- However, with the advancement of technology and the improvement of environmental protection requirements, since 2006, only a few small units still use this traditional process.
Maleic anhydride Information
Industries: Paints and varnishes, Adhesives, oils, greases, Building chemistry, Resins, plastics, polyurethanes
CAS number: 108-31-6
Chemical formula: C4H2O3
Molar mass: 98,06 g/mol
ADR: UN2215
Other physical property data:
pH value (approximate): approx. 1 (50 g/l aqueous solution)
Melting point/freezing point: 52°C
Boiling point/boiling range: 202°C (1013 hPa)
Relative density: 1.31 g/cm3 (15°C)
Solubility in water: 550 g/100 g (20°C)
Product packaging
Use special barrels or containers for packaging and ensure that the packaging is intact.
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