p-Xylene
p-Xylene (CAS: 106-42-3), also known as 1,4-dimethylbenzene, is an aromatic hydrocarbon with the formula C6H4(CH3)2. It is a colourless liquid with a characteristic sweet odour, primarily utilised as a solvent and in the synthesis of other chemicals. With a molecular weight of 106.17 g/mol, p-Xylene serves as a crucial building block in various industrial processes and research applications, including the production of terephthalic acid for polyester manufacturing.
- IUPAC
- 1,4-Dimethylbenzene
- Synonyms
- 1,4-Dimethylbenzenepara-Xylenep-XylolBenzene, 1,4-dimethyl-
Solvent Applications
p-Xylene is an effective solvent for various organic compounds, resins, and coatings. Its aromatic nature makes it suitable for applications requiring good solvency power in industrial cleaning and as a component in solvent blends.
Chemical Synthesis Intermediate
It is a key intermediate in the production of terephthalic acid (PTA), a primary component in the manufacturing of polyethylene terephthalate (PET) plastics and polyester fibres. This makes p-Xylene vital for the textile and packaging industries.
Laboratory Reagent
Utilised in analytical chemistry and research laboratories, p-Xylene serves as a solvent and standard. Its defined properties are valuable for chromatography and other analytical techniques, supporting scientific investigation.
Research and Development
p-Xylene is employed in R&D settings for exploring new chemical reactions and material synthesis. Its availability as a high-purity reagent facilitates accurate experimental outcomes in diverse scientific fields.
| Molecular weight | 106.17 |
|---|---|
| Linear formula | C6H4(CH3)2 |
| Assay | ≥99.0% |
| Grade | puriss. p.a. |
| Boiling point | 138 °C(lit.) |
| Density | 0.861 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.495(lit.) |
| Melting point | 12-13 °C(lit.) |
| Vapour pressure | 9 mmHg (20 °C) |
| Vapour density | 3.7 (vs air) |
| Autoignition temp | 984 °F |
Hazard statements
- H226Flammable liquid and vapour
- H312Harmful in contact with skin
- H315Causes skin irritation
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 25 °C / 77 °F |
| Transport (UN / ADR) | UN 1307 3 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 10-20/21-38 |
| Safety statements (S) | 25 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Expl Lim | 7 % |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is p-Xylene used for?
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p-Xylene is primarily used as a solvent and as a key intermediate in the synthesis of terephthalic acid (PTA), which is essential for producing PET plastics and polyester fibres. It also finds application as a laboratory reagent in analytical and research settings.
What is the CAS number and chemical formula for p-Xylene?
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The CAS number for p-Xylene is 106-42-3, and its chemical formula is C6H4(CH3)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies p-Xylene with an assay of ≥99.0% and a grade of puriss. p.a. This product is not represented as meeting USP, BP, or EP pharmacopoeia standards.
How should p-Xylene be handled safely?
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p-Xylene is flammable (flash point 25 °C) and harmful if swallowed, inhaled, or in contact with skin (H226, H312 + H332). It can cause skin irritation (H315). Appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection, is essential. Handle in a well-ventilated area away from ignition sources.
Is p-Xylene available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of chemicals, including p-Xylene, serving customers worldwide.
How can I request a sample or quote for p-Xylene?
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To request a sample or a quote for p-Xylene, please contact our sales team through the website or by phone, providing your specific requirements.
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