What Is p-Xylene (CAS 106-42-3) ?
CAS 106-42-3 p-Xylene, also known as 1,4-dimethylbenzene or para-xylene, is a colorless, flammable liquid aromatic hydrocarbon with the chemical formula C₈H₁₀ and a molecular weight of 106.16 g/mol. It is one of the three isomeric forms of xylene (alongside o-xylene and m-xylene) and serves primarily as a key feedstock in the chemical industry.
What Are the Main Applications of p-Xylene (PX CAS 106-42-3)?
Polyethylene Terephthalate Production
This represents the most significant application for p-Xylene, accounting for approximately 97% of its total demand. Paraxylene is used to produce purified terephthalic acid (PTA), which undergoes polymerization to form polyethylene terephthalate resin. This resin serves as the core material for manufacturing beverage bottles, food packaging products, and plastic films.
Polyester Fiber Manufacturing
PTA and dimethyl terephthalate (DMT), both derived from p-Xylene (PX), serve as key raw materials for polyester fiber production. Further processed, polyester fibers find applications across diverse sectors including apparel, home textiles, and various industrial goods.
Polyester Resin and Film Production
p-Xylene (CAS 106-42-3) is also used to manufacture polyester resins and various types of films. The resulting polyester resins can be processed into high-performance plastics and coatings, while film products encompass diverse categories, including photographic film meeting specialized application requirements.
Chemical Intermediate Production
Paraxylene serves as a fundamental feedstock for producing specialty chemicals, enabling the manufacture of industrial solvents, agrochemicals, and other chemical products.
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