Product Introduction
Maleic anhydride is the acid anhydride of maleic acid. The molecular formula is C4H2O3 and the molecular weight is 98.06. It is mainly prepared by the oxidation of n-butane or butene in benzene or C4 fraction. The solid toxilic anhydride is white briquettes, easy to sublimate, soluble in alcohol, ether and acetone and It is easy to deliquesce in water to form maleic acid.
Product Properties
|
Product Name： |
Maleic anhydride |
|
CAS No.： |
108-31-6 |
|
Molecular Formula: |
C4H2O3 |
|
Structural formula: |
|
Products Description
|
Items |
Standard |
Results |
|
Appearance |
White briquettes |
White briquettes |
|
Purity(by MA) |
99.5% min |
99.71% |
|
Molten Colour |
25 APHA Max |
13 |
|
Solidifying Point |
52.5 Min |
52.5 |
|
Ash |
0.005% Max |
＜0.001 |
|
Iron |
3 ppm Max |
0.32 |
| Maleic Acid | ≤0.5 | 0.29 |
Product Application
Production of Unsaturated Polyester Resins: Maleic anhydride is mainly used to produce unsaturated polyester resins. These resins are widely used in fiber-reinforced plastics (FRP), coatings, adhesives, and casting materials.
Coatings and Paints: MA is also used as a precursor in the synthesis of alkyd and acrylic resins, which are further processed into various baking varnishes, lacquers, inks, and similar products. These resins impart properties such as high hardness, weather resistance, and gloss.
Pesticides and Pharmaceutical Intermediates: In the pesticide industry, it is used in the production of certain insecticides and fungicides. In pharmaceuticals, it acts as a starting material for synthesizing various drugs, including antibiotics, analgesics, and hormonal agents.
Plasticizers and Lubricant Additives: it's reaction products with specific alcohols can serve as plasticizers, enhancing the flexibility and processability of plastic products. Additionally, certain ester derivatives are used as additives in high-performance lubricants, improving their effectiveness.
Product Packaging & Storage
Packaging:
The product is lined with plastic bags and covered with woven bags. The net weight is 25 kg, 50 kg, or 500 kg, and can also be customized according to the customer's requirements.
Storage:
Store in a cool, dry, well-ventilated place. Keep away from heat, sparks, and open flames. Keep the container tightly sealed.
FAQ
Q: Does toxilic anhydride dissolve in water?
A: Yes, Toxilic anhydride dissolves in water and forms maleic acid. In addition, it is soluble in ethanol, acetone, and glacial acetic acid, slightly soluble in benzene, and insoluble in trichloromethane.
Q: Is maleic anhydride exported as dangerous goods?
A: Yes, It is classified as dangerous goods when exported. According to the Regulations on the Safety Management of Hazardous Chemicals, it is considered a hazardous chemical. During export, it requires special packaging for dangerous goods and may also need commodity inspection.
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