Maleic acid anhydride
General Product Information
| Article | Maleic acid anhydride |
| Synonyms | Furan-2,5-dione, cis-Butenedioic anhydride, 2,5-Furanedione, Maleic anhydride, Toxilic anhydride |
| CAS No. | 108-31-6 |
| EEG No. | 607-096-00-9 |
| EINECS No. | 203-571-6 |
| IMO | Class 8 (A). |
| Tariff Code | 29171400 |
| UN No. | 2215 |
| VLG/ADR | Class 8, Packing Group III |
Description
Maleic anhydride is an organic compound that occurs in solid form as colorless to white crystals with a distinctive, pungent odor. It is an important industrial raw material, used primarily at the production of unsaturated polyester resins, lubricant additives and other polymers. It reacts rapidly with water, forming maleic acid.
Characteristics
- Odor: Pungent, pungent.
- Hygroscopic: Yes.
- Color: White to Colorless.
- Grade: Technical.
- Solubility: Soluble in water.
- Shape: crystals or flakes.
Physical & Chemical Properties
| Chemical Structure | C4H2O3 |
| Molar Weight | 98.06 g/mol |
| Melting Point | 52,8 °C |
| Boiling Point | 202 °C |
| Density | 1.48 g/cm³ |
| Refractive Index | – |
| pH | – |
Applications
Maleic anhydride is applied in various ways, for instance:
1. Lubricants
Used as an additive in engine oils for improved performance and protection.
2. Plastics Industry
Indispensable for the production of unsaturated polyester resins (UPR), widely used in building materials, shipbuilding, automotive parts and plumbing.
3. Coatings & Resins
Shape base for alkyd resins, epoxy hardeners and surface treatments.
4. Paper & Textile Industry
Used in treatments to improve fiber properties.
Interessing Links
- CAS Common Chemistry – Maleic Anhydride
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Maleic Anhydride – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Maleic anhydride