Description
Maleic anhydride is colorless crystal with strong pungent smell. Its freezing point is 52.8 ºC, boiling point is 202 ºC, and it is easy to sublimate. It is mainly prepared by oxidation of n-butane or butene in benzene or C4 fraction. It is the raw material for unsaturated polyester production and organic synthesis.
Product nature Colorless orthogonal acicular crystal or white crystalline powder. Soluble in water, acetone, benzene, chloroform and other organic solvents. Solubility in the following solvents at 25 ºC (gloog): acetone 227, ethyl acetate 112, chloroform 52.5 I benzene 50 I toluene 23.4; O-xylene 19.4; Carbon tetrachloride 0 60; Petroleum ether 0.25. Dissolve in alcohol to form ester. Soluble in dioxane. Sublimation by heat. In case of high heat, open fire or contact with oxidant, it may cause combustion. Corrosive. Slowly hydrolyze in cold water to form maleic acid. Contact with strong oxidants can cause combustion and explosion. If the temperature exceeds 66 ºC, polymerization will occur in contact with amines or alkali metals.
| Molecular weight | 98.0581 |
| Density | 1.48 |
| Melting point | 52-55ºC |
| Boiling point | 200 °C (lit.) |
| Flash point | 218 °F |
| Water solubility | 79 g/100 mL (25ºC) |
| Vapor pressure | 0.16 mm Hg ( 20 °C) |
1.The pharmaceutical industry is used to manufacture long-actingsulfa drugs. The pesticide industry is used to manufacture pesticidemarathon, high-efficiency and low toxicity pesticide 4049, etc.
2.It is used in the production of unsaturated polyester resin, ink addi-tives, papermaking additives, coatings, pharmaceutical industryfood industry, etc
3.The coating industry is used to manufacture insulating paint, whiteenamel, baking paint, varnish, etc
Zouping Xiangyu Chemical Co., Ltd. is a reputable and thriving chemical enterprise located in Zouping County, Binzhou City, Shandong Province. Situated within an influential petrochemical industry hub, our company has capitalized on the region's abundant chemical resources and established itself as a leading provider of comprehensive chemical solutions. With a history spanning several decades, we have successfully evolved into a prominent organization that seamlessly integrates research and development, production, sales, and international trade.
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