What is p-xylene (1,4-Dimethylbenzene CAS 106-42-3 )used for?

What is p-xylene (1,4-Dimethylbenzene CAS 106-42-3 )?

P-xylene (1,4-Dimethylbenzene CAS 106-42-3), a colorless transparent liquid with an aromatic odor, possesses distinct physical properties. Its density is 0.861, melting point is 13.2℃, boiling point reaches 138.5℃, and flash point is 25℃. This compound is readily miscible with organic solvents such as ethanol, diethyl ether, and acetone. Notably, p-xylene is flammable and slightly more toxic than ethanol. When its vapors mix with air, they form explosive mixtures within a concentration range of 1.1% to 7.0% by volume.

P-Xylene specifications

Industrial Applications of P-Xylene

• P-xylene (1,4-Dimethylbenzene CAS 106-42-3) has extensive industrial applications. It is primarily used in the production of terephthalic acid, a key raw material for further manufacturing polyester resins. Polyester resin plays a key role in the manufacture of polyester fibers, polyester sheets, and polyester hollow containers.
• Simultaneously, polyester fiber-currently China's largest synthetic fiber in production-relies on P-xylene (PX) as one of its raw materials. Additionally, PX is utilized in the production of coatings, dyes, and pesticides.

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p-xylene (CAS 106-42-3) together with other solvents and intermediates.

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