m-Xylene, also known by its CAS number 108-38-3, is a significant aromatic hydrocarbon that plays a crucial role across various industries. As one of the three isomers of dimethylbenzene, its unique structural arrangement, with methyl groups at the 1 and 3 positions on the benzene ring, dictates its specific chemical and physical properties. Understanding these characteristics is key to appreciating its wide-ranging applications.

The physical properties of m-Xylene are well-documented. It presents as a colorless liquid with a characteristic aromatic odor. With a melting point of -48°C and a boiling point of 139°C, it remains liquid under typical ambient conditions, making it convenient for handling and processing. Its density is approximately 0.868 g/mL, and it is miscible with many organic solvents but only slightly soluble in water. These properties make it an effective solvent for a variety of organic compounds.

Industrially, m-Xylene is a cornerstone for the production of isophthalic acid. This acid is a critical monomer used in the manufacture of high-performance polymers such as polyethylene terephthalate (PET) and unsaturated polyester resins. The catalytic oxidation of m-Xylene to isophthalic acid is a well-established industrial process that underscores its importance in the materials science sector. Beyond this primary application, m-Xylene also serves as a vital precursor in the synthesis of other chemicals like 2,4- and 2,6-xylidine, which are used in the production of dyes and pharmaceuticals.

In laboratory settings, m-Xylene is frequently employed as a solvent. Its effectiveness in dissolving fats, oils, and resins makes it useful in analytical procedures, including histology, where it is used for tissue preparation and clearing. When considering the purchase of such chemicals, seeking a reliable supplier in China can ensure access to high-quality products essential for reproducible scientific results. The availability of m-Xylene for purchase from reputable manufacturers is critical for research institutions and chemical companies alike.

Safety considerations are paramount when handling m-Xylene. It is a flammable liquid and vapor, and exposure can lead to various health effects, including irritation of the skin, eyes, and respiratory tract, as well as potential central nervous system effects. Adhering to strict safety protocols, including proper ventilation and personal protective equipment, is essential to mitigate risks. Understanding the m-Xylene chemical properties and following recommended safety data sheets are crucial steps for any user.

In summary, m-Xylene's versatility as both a chemical intermediate and a solvent solidifies its importance in modern industry. From the creation of advanced polymers to enabling precise laboratory analyses, the demand for this compound remains high. For those seeking to buy m-Xylene, identifying a dependable manufacturer that prioritizes quality and safety is key to successful application.