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Maleic Anhydride
Specifications
| Item | Index | |
| Top grade | Qualified grade | |
| Content,%≥ | 99.5 | 99 |
| Appearance | White solid | White solid |
| Melting Color (Pt-Co), Hazen | 25 | 25 |
| Ignition residue, %≤ | 0.005 | 0.005 |
| Iron content,ppm≤ | 2 | 2 |
| Crystalization point, ℃≥ | 52.5 | 52.5 |
Packing & Storage
| Packing | In 25kg UN PE bag |
| Storage | 20℃, 2 years. |
| Shipping | Room temperature in China; may vary elsewhere |
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General Information
Chemical & Physical Information
Safety Information
Synthetic Route
Chemical & Physical Information
| Common Names | Maleic Acid Anhydride,2,5-Dihydrofuran-2,5-dione,Furane-2,5-dione,2,5-dioxofuran | ||
| Structure |  | ||
| CAS No. | 108-31-6 | Boiling Point (℃) | 202 |
| Molecular Weight | 98.1 | Melting Point (℃) | 52.8 |
| Appearance | White solid | Vapor Specific Gravity | 3.4 |
| HS Code | 291714 | Flash Point (℃) | 103.3 |
| Solubility | Readily soluble in water and methanol | Autoignition Temperature (℃) | 477 |
Safety Information
| Safety Phrases | / | ||
| RIDADR | UN2215 | ||
| WGK Germany | / | ||
| Packaging Group | III | ||
| Hazard Class | 8 | ||
| SYMPTOMS | PREVENTION | FIRST AID | |
| Inhalation | Cough. Sore throat. | Use local exhaust or breathing protection. | Fresh air, rest. |
| Skin | Redness. Burning sensation. Itching. | Protective gloves. | Remove contaminated clothes. Rinse and then wash skin with water and soap. |
| Eyes | Redness. Pain. | Wear safety goggles. | First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. |
| Ingestion | Abdominal pain. Nausea. Vomiting. | Do not eat, drink, or smoke during work. Wash hands before eating. | Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention. |
Synthetic Route
The n-butane oxidation process takes n-butane as raw material, and under the action of V2O5-P2O5 series catalyst, gas-phase oxidation reaction occurs to generate maleic anhydride.