Maleic Anhydride
CAS Number: 108-31-6
Maleic anhydride (MAH) is a highly reactive electron-poor monomer used in alternating copolymerization, maleic anhydride grafting, and unsaturated polyester synthesis. It serves as a reactive handle for polymer functionalization through its anhydride group, which readily reacts with amines, alcohols, and epoxides for crosslinking and compatibilization.
Technical Specifications
| appearance | White crystalline solid or flakes |
| purity (%) | ≥99.5 |
| color (APHA) | ≤10 |
| moisture (%) | ≤0.1 |
| melting point (°C) | 52.5–53.5 |
Applications
- Unsaturated polyester resin (UPR) synthesis for FRP composites
- Maleic anhydride grafted polyolefin (MAH-g-PP/PE) compatibilizer
- Styrene-maleic anhydride (SMA) copolymer production
- Scale and corrosion inhibitor copolymers for water treatment
- Reactive diluent in alkyd and oil-based resin formulations
Key Features
- Electron-poor double bond enables alternating copolymerization with electron-rich monomers
- Reactive anhydride group allows post-polymerization functionalization with diverse nucleophiles
- Low color product for light-colored resin and coating applications
- Solid flake form reduces vapor pressure exposure during handling
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CAS Number
108-31-6
Category
Polymer Synthesis ChemicalsAvailability
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