Xylene (Mixed Xylene / BTX): Applications and Procurement for Solvents, PX and Downstream Chains

Xylene is a C8 arene mixture containing the ortho-, meta- and para-xylene isomers plus a small amount of ethylbenzene. Industrially it is produced and separated as "mixed xylene", and it is the key arene linking refining with bulk chemicals (the X in BTX).

As an Industrial Solvent

Mixed xylene is a general-purpose medium-boiling solvent for coatings, inks, rubber and adhesives, with strong solvency and moderate evaporation. Note, however, that it is a flammable hazardous chemical, so VOC and occupational health controls are required. As environmental rules tighten, waterborne alternatives are advancing, but xylene remains hard to replace in high-end solvent applications.

Ortho-Xylene to Phthalic Anhydride

Ortho-xylene is the sole feedstock for producing phthalic anhydride (PA). Oxidation gives phthalic anhydride, which then enters the plasticiser and alkyd resin chain — an important upstream link for coatings.

Para-Xylene (PX) to PTA to PET

Oxidation of para-xylene (PX) yields purified terephthalic acid (PTA), which is then esterified with ethylene glycol to give PET, the feedstock for polyester fibre and beverage bottles. The PX-PTA-PET chain is one of the largest arene chains by volume, and PX supply and price directly affect downstream textiles and packaging.

Key Procurement Indicators

As a solvent, watch distillation range, density, aromatic content, sulphur and impurities; as a chemical feedstock, watch isomer purity (ortho and PX content). Xylene is a hazardous chemical: storage must be explosion-proof, ventilated and away from ignition sources, and transport must follow flammable liquid regulations. Haiyu Zhonglong can supply xylene and other arene solvents and feedstocks with full compliance. Submit an Online Inquiry or Contact Us; more products in the Product Centre.