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 | In 25kg UN PE bag |
Storage | 20℃, 2 years. |
Shipping | Room temperature in China; may vary elsewhere |
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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 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. |
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.