What is the CAS number of p-xylene
The CAS number for p-xylene (1,4-dimethylbenzene) is 106-42-3. Paraxylene is also known as p-Xylene and primarily serves as a building-block chemical to create PET plastics and polyester. p-Xylene is flammable, so proper storage and handling is vital to avoid potential ignition.
Other Names: 1,4-Dimethylbenzene, p-xylol, paraxylene.
CAS number: 106-42-3
Structure:
What is CAS number 106-42-3 p-xylene used for?
CAS 106-42-3 p-xylene is widely used as a feedstock (or "building block") to manufacture other industrial chemicals, notably terephthalic acid (TPA), purified terephthalic acid (PTA) and dimethyl-terephthalate (DMT). TPA, PTA and DMT are used to manufacture polyethylene terephthalate (PET) polyesters, a kind of plastic.
How is para-xylene produced?
- p-Xylene is usually produced by the hydrocracking of xylene or the demethylation of xylene.
- Hydrocracking: Xylene reacts with hydrogen under the action of a catalyst to produce p-xylene and hydrogen.
- Demethylation reaction: Xylene reacts with a catalyst such as aluminum chloride to remove a methyl group, producing p-xylene.
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