CAS 106-42-3 Paraxylene (P-Xylene) is an aromatic hydrocarbon. It is one of the three isomers of dimethylbenzene known collectively as xylenes.
Paraxylene is a colorless, transparent liquid with aromatic odor, specific gravity 0.861g/cm3, and boiling point 138.3°C. It is one of the basic raw materials for the petrochemical industry.
- Chemical Name: p-Xylene, Paraxylene, 1,4-Dimethylbenzene
- CAS Number: 106-42-3
- Molecular Formula: C₈H₁₀
- Structure: A benzene ring with two methyl groups in the para (1,4) position.
- Isomers: One of the three xylene isomers, alongside ortho-xylene and meta-xylene.
What is the raw material for paraxylene (P-Xylene)?
The main raw materials for paraxylene (p-xylene) are naphtha (derived from crude oil) and pyrolysis gasoline (a byproduct of ethylene production). The specific process is:
Naphtha is processed via catalytic reforming to produce "reformate" (rich in BTX aromatics: benzene, toluene, xylenes).
Pyrolysis gasoline (from ethylene cracking units) is another source of the C8 aromatic fraction (which contains mixed xylenes, including p-xylene).
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