Maleic anhydride, also known as maleic anhydride, maleic anhydride, 2,5-furandione and so on. Oblique crystal colorless acicular or lamellar crystals. Has a strong stimulating odor, soluble in ethanol, ether and acetone, insoluble in petroleum ether and carbon tetrachloride. Maleic acid with hot water.
Appearance:
white flaky crystal, powdery, acicular, flaky, pelleted, stick-like, lumpy or melted material, with a strong stimulating odor.
| Characteristics | Units | Guaranteed Values | Results |
| Appearance | White briquettes | White briquettes | |
| Purity(by MA) | WT% | 99.5 min | 99.72 |
| Molten Colour | APHA | 25 Max | 15 |
| Solidifying Point | °C | 52.5 Min | 52.6 |
| Ash | WT% | 0.005 Max | <0.001 |
| Iron | PPM | 3 Max | 0.32 |
Maleic anhydride is an important basic organic chemical raw material. It is the third largest anhydride raw material in the world after acetic anhydride and phthalic anhydride. Its downstream products have quite extensive development and application prospects. Maleic anhydride is mainly used in the synthesis of unsaturated polyester resin, which is the raw material for the manufacture of automotive parts, ships, corrosion resistant chemical equipment and daily necessities. Maleic anhydride is also an important intermediate in the production of lubricating oil additives, coatings, pesticides, fumaric acid, copolymers, food additives and so on. Its hydrogenated derivatives include succinic anhydride, 1.4-butanediol, R-J-lactone and tetrahydrofuran.
1. Maleic anhydride mainly used for the production of unsaturated polyester resin, alkyd resin.
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