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m-Xylene, also known as 1,3-dimethylbenzene, is a significant aromatic hydrocarbon with the chemical formula C8H10. It is one of the three isomers of dimethylbenzene, distinguished by the meta-positioning of its two methyl groups on the benzene ring. This colorless, flammable liquid is a fundamental component in the chemical industry, valued for its versatile properties and wide-ranging applications.
The production of m-Xylene typically involves the catalytic reforming of petroleum or coal carbonization. It naturally occurs in crude oil and aviation fuels. Commercially, it is synthesized through the methylation of benzene and toluene. The resulting commercial xylene mixtures usually contain a significant percentage of m-Xylene, along with its isomers o-xylene and p-xylene, and ethylbenzene. The specific isomer ratios can be adjusted through processes like the UOP-Isomar process to favor the highly valued p-xylene.
One of the primary industrial uses of m-Xylene is in the production of isophthalic acid. This process involves the catalytic oxidation of m-Xylene, and the resulting isophthalic acid serves as a crucial copolymerizing monomer. It is used to modify the properties of polyethylene terephthalate (PET), enhancing its performance in various applications.
Beyond its role in polymer production, m-Xylene is an indispensable industrial solvent. Its ability to dissolve a broad spectrum of organic substances makes it effective in the formulation of paints, lacquers, varnishes, and adhesives. The buy m-Xylene online market sees consistent demand from manufacturers who rely on its solvency power. High purity m-Xylene ensures optimal performance and predictable results in these applications.
As a chemical intermediate, m-Xylene is also a precursor for other chemicals like 2,4- and 2,6-xylidine, and isophthalonitrile through ammoxidation. The reliable supply of m-Xylene from reputable manufacturers is critical for industries that depend on these downstream products. When considering purchase options, exploring competitive pricing for bulk m-Xylene can offer significant cost advantages for large-scale operations.
Understanding the physical properties of m-Xylene, such as its melting point of -48 °C, boiling point of 139 °C, and density of 0.868 g/mL at 25 °C, is crucial for safe handling and effective application. Its flash point of 27 °C also underscores its flammability, requiring appropriate storage and handling protocols.
In summary, m-Xylene is a cornerstone chemical with a broad spectrum of uses. From its critical function in polymer synthesis to its utility as a potent industrial solvent, the demand for m-Xylene remains robust. Companies looking to source this chemical can find numerous suppliers offering various grades and quantities, catering to different industrial needs.
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