O-Xylene – Industrial Aromatic Solvent for Chemical Manufacturing and Specialty Applications
Introduction
O-Xylene, also known as Ortho-Xylene or 1,2-Dimethylbenzene, is an aromatic hydrocarbon with the chemical formula C₈H₁₀. It is one of the three xylene isomers and is typically supplied as a clear, colorless liquid with a characteristic aromatic odor. O-Xylene is primarily used as a chemical intermediate in the production of phthalic anhydride and in selected solvent-based industrial applications.
Its chemical structure, solvent properties, and role as a manufacturing feedstock make it an important raw material for the chemical industry. Product suitability depends on purity, composition, and the requirements of the intended industrial process.
Industrial Applications
O-Xylene is primarily used in the production of phthalic anhydride, an important chemical intermediate for manufacturing plasticizers, alkyd resins, polyester resins, and other industrial chemical products. This application represents one of its major commercial uses.
In the coatings and chemical processing industries, O-Xylene may be used as an aromatic solvent in selected formulations where its solvency and evaporation characteristics are appropriate. It can help dissolve compatible resins, oils, and organic compounds.
O-Xylene is also used in laboratory research, chemical synthesis, and specialty manufacturing processes. Industrial users should select the appropriate purity grade and ensure compatibility with process equipment and applicable safety requirements.
Key Benefits
- Chemical intermediate: Important raw material for phthalic anhydride production.
- Aromatic solvency: Dissolves various compatible organic substances and resins.
- Industrial versatility: Used in chemical synthesis, coatings, and selected manufacturing processes.
- Liquid processing: Suitable for controlled industrial solvent-handling systems.
- Defined chemical composition: Available in grades with specified O-Xylene purity.
- Manufacturing utility: Supports the production of several downstream chemical products.
Product Specifications
| Parameter | Details |
|---|---|
| Product Name | O-Xylene |
| Alternative Names | Ortho-Xylene, 1,2-Dimethylbenzene |
| Chemical Formula | C₈H₁₀ |
| CAS Number | 95-47-6 |
| Molecular Weight | 106.17 g/mol |
| Appearance | Clear, colorless liquid |
| Odor | Characteristic aromatic odor |
| Boiling Point | Approximately 144°C |
| Melting Point | Approximately −25°C |
| Density | Approximately 0.88 g/cm³ at 20°C |
| Water Solubility | Very slightly soluble in water |
| Flash Point | Approximately 17–32°C, depending on test method |
| Chemical Family | Aromatic hydrocarbons |
| Primary Functions | Chemical intermediate, industrial solvent |
| Common Applications | Phthalic anhydride production, chemical synthesis, coatings, specialty solvents |
| Packaging | As specified by the supplier |
Specifications may vary by manufacturer and purity grade. Confirm the current technical data sheet (TDS), certificate of analysis (COA), isomer content, purity, and packaging details before purchase or use.
Storage and Handling
O-Xylene is a flammable liquid and vapor. Exposure may cause irritation, dizziness, headache, and other adverse health effects. Repeated or prolonged exposure can present additional health risks.
Store O-Xylene in tightly closed, approved containers in a cool, well-ventilated area away from heat, sparks, open flames, and other ignition sources. Use properly grounded and bonded transfer equipment and suitable explosion-protected electrical installations where required.
Avoid inhaling vapors and prevent direct contact with the skin and eyes. Use appropriate chemical-resistant gloves, protective clothing, and eye protection. Industrial operations should provide effective ventilation and follow applicable occupational exposure limits.
Consult the supplier's safety data sheet (SDS) for handling, spill response, fire protection, and emergency procedures. Prevent releases into drains, soil, and waterways.
Quality and Supply
Consistent O-Xylene quality is essential for chemical manufacturing processes that require controlled isomer composition and reliable feedstock performance. Buyers should verify purity, moisture content, color, and the presence of other aromatic hydrocarbons before ordering.
A reliable supplier should provide current technical documentation, including the TDS, COA, and SDS. Confirm the required grade, packaging, transport classification, and delivery conditions to ensure suitability for the intended industrial application.
Conclusion
O-Xylene is an important aromatic hydrocarbon primarily used as a feedstock for phthalic anhydride production and in selected industrial solvent applications. Its chemical properties make it valuable in the manufacture of resins, plasticizer intermediates, and specialty chemicals. Selecting the correct purity grade and following appropriate flammable-liquid handling procedures help ensure consistent performance and safe industrial use.
