When purchasing xylene for an industrial process, the key question is often not simply whether the solvent is pure enough, but whether the selected isomer matches the reaction, separation, evaporation, or downstream synthesis requirements. High Purity Xylene Isomers include o-Xylene, m-Xylene, and p-Xylene, which share the molecular formula C₈H₁₀ but have different molecular structures and physical properties. These differences directly affect boiling behavior, solvency, reaction selectivity, and downstream product quality.
Shandong Aolansu Environmental Protection Technology Co., Ltd. supplies individually separated xylene isomers with purity of ≥99.5%. Through controlled C8 aromatic hydrocarbon separation and purification, AOLANSU helps industrial buyers avoid the uncertainty associated with mixed xylene and select a more suitable raw material for their specific production process. As a qualified hazardous chemical supplier, we also provide the documentation and technical support required for compliant procurement.
The three xylene isomers should not be treated as interchangeable solvents. Their different molecular arrangements give them different boiling points, densities, and application characteristics. For buyers who require predictable reaction conditions or stable solvent evaporation, purchasing a defined isomer can provide better process control than using a mixed aromatic solvent.
| Isomer | CAS No. | Boiling Point | Density at 20°C | Typical Selection Logic |
|---|---|---|---|---|
| o-Xylene | 95-47-6 | 144.4°C | 0.880–0.885 g/cm³ | Suitable where higher boiling behavior and strong solvency are required |
| m-Xylene | 108-38-3 | 139.1°C | 0.868–0.872 g/cm³ | Suitable for solvent applications requiring balanced volatility and dissolving performance |
| p-Xylene | 106-42-3 | 138.4°C | 0.861–0.865 g/cm³ | Primarily selected as a feedstock for PTA, DMT, and polyester production |
This distinction is particularly important for procurement departments purchasing raw materials for continuous production. Instead of selecting a product only by price per ton, buyers can evaluate the isomer according to its role in the production chain, reducing unnecessary separation work and minimizing fluctuations caused by inconsistent feedstock composition.
AOLANSU controls the separation and purification process to maintain a purity of ≥99.5% for each individual isomer. Moisture and trace impurities are also controlled to reduce their influence on downstream reactions, solvent performance, and product appearance.
Each production batch is subject to quality inspection before shipment. Buyers can obtain product specifications and COA documentation for incoming-material verification, making it easier to establish consistent raw-material acceptance criteria for long-term procurement.
| Parameter | Specification |
|---|---|
| Product Name | High Purity Xylene Isomers |
| Isomers | o-Xylene, m-Xylene, p-Xylene |
| CAS No. | o-Xylene: 95-47-6; m-Xylene: 108-38-3; p-Xylene: 106-42-3 |
| Purity | ≥99.5% for each isomer |
| Appearance | Colorless transparent liquid without visible impurities |
| Density at 20°C | o-Xylene: 0.880–0.885 g/cm³; m-Xylene: 0.868–0.872 g/cm³; p-Xylene: 0.861–0.865 g/cm³ |
| Boiling Point | o-Xylene: 144.4°C; m-Xylene: 139.1°C; p-Xylene: 138.4°C |
| Flash Point | o-Xylene: 30°C; m-Xylene: 25°C; p-Xylene: 27°C, closed cup |
| Moisture | ≤0.03% |
| Packaging | 170kg galvanized iron drum, 1000kg IBC tank |
| UN No. | 1307 |
| Solubility | Immiscible with water and miscible with many organic solvents |
o-Xylene is commonly selected as a feedstock for phthalic anhydride production. Its value for industrial buyers comes from its defined composition and suitability for controlled oxidation processes. The resulting phthalic anhydride is further used in plasticizers, alkyd resins, unsaturated polyester resins, coatings, and related chemical products.
A European coating manufacturer purchased o-xylene from our factory for phthalic anhydride synthesis. The production process achieved a reaction yield of 99.2%, approximately 0.5% higher than when ordinary mixed xylene raw materials were used. The higher-purity feedstock reduced by-product formation and lowered production waste by 12%, while improving the weather resistance and durability of the final coatings.
m-Xylene provides a useful balance between volatility and solvency, making it suitable for applications where controlled evaporation and effective dissolution are both important. It is used in isophthalic acid production and can also serve as a solvent in inks, coatings, industrial cleaning formulations, and selected chemical synthesis processes.
A Southeast Asian ink manufacturer selected our m-xylene as a solvent for high-gloss printing inks. Its moderate volatility supported more uniform ink drying, reduced surface cracking, and improved printing clarity. The manufacturer's production defect rate decreased by 18% year-on-year after the formulation was optimized around the purified solvent.
p-Xylene occupies a different position in the industrial chain. It is a major feedstock for producing purified terephthalic acid (PTA) and dimethyl terephthalate (DMT), which are subsequently used to manufacture polyester fibers, films, and PET resin. For this application, feedstock consistency is particularly important because variations in raw-material quality can affect continuous downstream production.
A large Middle Eastern polyester manufacturer established a long-term cooperation arrangement for p-xylene supply to support a 500,000-ton-per-year PET resin production line. Product purity remained consistently at ≥99.7%, helping maintain stable PTA production and reducing finished-product quality deviations by 90%. The material also met the company's requirements for international food-grade PET packaging production.
Mixed xylene can be appropriate for general-purpose solvent applications, but it may not provide the composition control required by chemical synthesis or polyester feedstock production. When a production line is designed around a specific aromatic raw material, a single-isomer supply allows procurement teams to establish clearer specifications for purity, moisture, density, and boiling range.
For long-term purchasing, this can simplify incoming inspection and reduce the need for additional separation or formulation adjustments. AOLANSU supports both individual-isomer procurement and repeat bulk supply, allowing buyers to select o-Xylene, m-Xylene, or p-Xylene according to their actual process requirements.
AOLANSU supports small-scale testing before long-term cooperation, allowing buyers to evaluate solvent behavior, reaction compatibility, or downstream production performance using samples. For qualified applications, the company can arrange drum, IBC, or larger-volume supply according to the buyer's procurement plan.
Standard packaging includes 170kg galvanized iron drums and 1000kg IBC tanks. Packaging specifications can be adjusted according to transportation requirements. As the product is classified as a flammable hazardous chemical, transportation and handling must follow applicable dangerous-goods regulations in the exporting and importing countries.
High Purity Xylene Isomers are flammable liquids and their vapors can form combustible or explosive mixtures with air. They should be stored in a cool, dry, well-ventilated area away from ignition sources, heat, oxidizers, and incompatible materials. Containers should remain tightly closed when not in use, and appropriate grounding and ventilation measures should be considered during transfer operations.
Operators should use suitable protective equipment, including chemical-resistant gloves and eye protection, and follow the applicable Safety Data Sheet before handling the material. AOLANSU holds a hazardous chemical business license and can provide SDS, COA, customs documentation, and other relevant export documents to support compliant procurement.
The three materials have the same molecular formula but different molecular structures. Their boiling points and physical properties are therefore different, which affects their suitability for specific processes. o-Xylene is commonly associated with phthalic anhydride production, m-Xylene is widely used in solvent and intermediate applications, while p-Xylene is a major feedstock for PTA and polyester production.
Individual-isomer supply provides a more clearly defined composition. This is useful when the production process requires controlled reaction conditions, predictable evaporation, or a specific chemical feedstock. Buyers can select the appropriate isomer instead of accepting the variable composition of a mixed-xylene stream.
Yes. AOLANSU can provide samples for buyers who need to verify purity, solvent behavior, reaction compatibility, or downstream process performance before confirming a larger order. The specific sample quantity and shipping arrangement can be discussed according to the application and destination.
AOLANSU can provide COA and SDS documentation together with applicable export and customs documents. For hazardous chemical shipments, transportation arrangements are made according to the relevant dangerous-goods requirements of the shipping route and destination market.
Shandong Aolansu Environmental Protection Technology Co., Ltd. focuses on the supply of industrial chemical raw materials for international buyers. For xylene procurement, our approach is based on product specification, application compatibility, batch consistency, and supply reliability rather than simply offering a general-purpose solvent.
With controlled purification, batch testing, flexible packaging, and hazardous chemical compliance support, AOLANSU provides buyers with a practical sourcing option for applications requiring high-purity individual xylene isomers. Before purchasing, buyers can provide their target process, required isomer, purity specification, packaging preference, and estimated annual volume so that the appropriate supply solution can be evaluated.
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