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1,2,3,5-Tetramethylbenzene

    • Product Name 1,2,3,5-Tetramethylbenzene
    • Alias Durene
    • Einecs 202-540-6
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    761758

    Chemical Name 1,2,3,5-Tetramethylbenzene
    Cas Number 527-53-7
    Molecular Formula C10H14
    Molar Mass 134.22 g/mol
    Appearance Colorless liquid
    Melting Point −22.5 °C
    Boiling Point 207 °C
    Density 0.875 g/cm³ (at 25 °C)
    Solubility In Water Insoluble
    Flash Point 77 °C (closed cup)
    Vapor Pressure 0.4 mmHg (25 °C)
    Refractive Index 1.497 (20 °C)
    Pubchem Cid 12265

    As an accredited 1,2,3,5-Tetramethylbenzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A 500g amber glass bottle, tightly sealed with a screw cap, labeled with chemical name and hazard symbols, ensuring light protection.
    Shipping 1,2,3,5-Tetramethylbenzene should be shipped in tightly sealed containers, away from sources of ignition and oxidizing materials. It must be labeled correctly as a flammable liquid and handled according to local, national, and international transport regulations, such as DOT, IATA, or IMDG. Ensure temperature control and proper ventilation during transit.
    Storage **1,2,3,5-Tetramethylbenzene** should be stored in a tightly closed container in a cool, dry, and well-ventilated area, away from sources of ignition and incompatible materials such as strong oxidizers. Keep it away from heat, sparks, and open flames. Store in accordance with local regulations, and ensure proper labeling. Use explosion-proof equipment and grounded storage where required.
    Application of 1,2,3,5-Tetramethylbenzene

    Applications of 1,2,3,5-Tetramethylbenzene in Industrial Manufacturing

    1,2,3,5-Tetramethylbenzene, also known as isodurene, supports multiple high-value industrial processes by serving as an intermediate, functional fluid, and chemical precursor. Our manufacturing focus ensures consistent quality and traceable production, which is critical for regulated downstream sectors. Below, we detail genuine use cases with specific technical considerations and processing requirements.

    1. Synthesis of Aromatic Carboxylic Acids for Plastics and Fiber Production

    Manufacturers use 1,2,3,5-tetramethylbenzene as a starting material to produce pentamethylbenzoic acid and 3,5-dimethylphthalic anhydride, essential in the synthesis of specialty polyesters and aramid fibers. The controlled oxidation process requires high feedstock purity, with consistent methyl group positioning to ensure predictable carboxylation yields and polymer end-use properties. Producers must comply with polymer additive regulations, documented under global chemical control inventories, while maintaining strict process parameters during catalytic oxidation and downstream purification.

    Industry compliance standards

    • REACH Annex XVII (EU) for intermediates
    • ISO 9001:2015 for quality management
    • 21 CFR Part 177 (US FDA for indirect food contact plastics)
    • China GB 4806 series (resins and food contact materials)

    Typical usage ratio

    • 10–25% of feedstock mix for oxidation, adjusted for desired acid/anhydride yield
    • Proportion varies with target polymer properties; higher ratios for enhanced thermal stability polymers

    Downstream process integration

    • Introduced to catalytic oxidation reactors for carboxylation using cobalt-manganese or cobalt-bromide systems
    • Integration at the esterification or polymerization stage for copolymer synthesis
    • Intermediate purification via distillation to ensure monomer grade purity
    • Final product blending into polymer melt or fiber spinning lines

    Final product types

    • Specialty PET (polyethylene terephthalate) resins
    • Meta-aramid fiber precursors
    • High-heat-resistant polyester films
    • Copolyester engineering plastics with defined methyl substitution patterns

    2. Manufacturing of Performance Fuel Additives and Octane Improvers

    Refineries employ 1,2,3,5-tetramethylbenzene as a blending agent and precursor in the production of high-octane fuel formulations. The molecule’s high aromaticity and methyl configuration enhance anti-knock performance in gasoline. Blending ratios align with national fuel standards, and all usage scenarios demand robust control of aromatic hydrocarbon emissions and safe handling of volatile organic compounds during processing and blending.

    Industry compliance standards

    • ASTM D4814 (US Gasoline Fuel Quality)
    • EN 228 (European Standard for Unleaded Petrol)
    • China GB 17930 (Motor Gasoline)
    • Emission limits: US EPA 40 CFR Part 80, EU Fuel Quality Directive (2009/30/EC)

    Typical usage ratio

    • 1–3% by volume in high-octane fuel blends
    • Varies by refinery process; increased dosage for specialty racing and aviation gasoline

    Downstream process integration

    • Direct addition in the blending stage of gasoline production
    • Co-blended with other alkylates and aromatics for octane-rating optimization
    • Quality control testing to adjust ratio for compliance with regional anti-knock specifications
    • Removal of impurities through distillation prior to final blending

    Final product types

    • Premium unleaded gasoline
    • High-octane aviation fuels
    • Specialty fuel additives for motorsport applications
    • Octane-boost enhancement packages for refinery use

    3. Catalyst Carrier and Solvent for Chemical Synthesis

    Process chemists select 1,2,3,5-tetramethylbenzene as a reaction medium and carrier solvent in the production of fine chemicals, agrochemical intermediates, and dyes. The compound’s unique boiling point and chemical inertness provide controlled environments for halogenation, sulfonation, and nitration reactions requiring high aromatic content and low water solubility. Traceability and process monitoring ensure compliance with occupational and environmental limits.

    Industry compliance standards

    • OECD Good Manufacturing Practice for Chemicals
    • ICH Q7 for active pharmaceutical ingredient intermediates
    • OSHA 29 CFR 1910 for handling flammable solvents
    • EU RoHS for restricted hazardous substances in downstream electronics uses

    Typical usage ratio

    • 20–60% as the main solvent or diluent within reaction mixtures
    • Adjusted down for batch processes with concentrated reactants

    Downstream process integration

    • Dosed directly into reaction vessels under inert atmosphere
    • Used as an extraction phase for organic intermediates post-reaction
    • Acts as a heat carrier and dispersion medium for solid catalyst systems
    • Recovered and recycled through distillation post-synthesis

    Final product types

    • Pharmaceutical intermediates
    • High-purity pesticide active ingredients
    • Sulfonated dye bases and pigments
    • Photoresist precursors for microelectronics

    4. Intermediate for Specialty Organic Pigment Manufacture

    Pigment producers convert 1,2,3,5-tetramethylbenzene into tailored quinone and phthalocyanine derivatives for the manufacture of high-performance organic colorants. The methyl substitution pattern affects color hue, solubility, and stability in inks, plastics, and coatings. Strict quality systems monitor both the incoming feedstock and pigment intermediates, with batch-to-batch consistency validated to end-use standards in printing and coatings.

    Industry compliance standards

    • ISO 1248 (Color Pigments—General Requirements)
    • EU REACH, Annex XVII for pigment intermediates
    • EN 71-3:2019 (Safety of toys, migration of certain elements, for pigments in children's products)
    • ASTM D3722 (Color and Strength of Color Pigments)

    Typical usage ratio

    • 15–40% in precursor reaction mixtures for quinone pigment synthesis
    • Modified according to target pigment shade and crystal structure requirements

    Downstream process integration

    • Feeding into oxidation and cyclization steps for quinone formation
    • Combination with metal salts for phthalocyanine pigment synthesis
    • Blending with dispersing agents for pigment slurry formation
    • Quality control analytical checks for pigment purity and performance metrics

    Final product types

    • Organic pigments for plastics compounding
    • High-heat-resistant printing inks
    • Specialty colorants for automotive coatings
    • Color concentrates for fiber, film, and masterbatch industries
    Free Quote

    Competitive 1,2,3,5-Tetramethylbenzene prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    Introducing 1,2,3,5-Tetramethylbenzene: A Reliable Choice in Specialty Aromatics

    At our plant, each batch of 1,2,3,5-Tetramethylbenzene comes off the line following strict process control and a history rooted in careful chemical craftsmanship. Many years in aromatic hydrocarbons have taught us that consistency and traceability matter just as much as high purity. Our product, sometimes known in the market by the name isodurene, finds its main role as an intermediate for advanced organic syntheses, including specialty polymers, dye intermediates, and certain high-value chemical applications.

    Product Model and Key Characteristics

    The model currently in focus, 1,2,3,5-Tetramethylbenzene, holds the CAS number 527-53-7. As a direct manufacturer, we keep process specifications in-house, governed by our quality-control checkpoints. A typical assay for our material holds steady at a minimum of 99% by GC, which allows downstream users to avoid unnecessary purification and focus on their application goals with confidence.

    This compound presents itself as a colorless crystalline solid under ambient conditions. Its molecular formula, C10H14, yields a molecular weight of 134.22 g/mol. Boiling right around 196-197°C and with a relatively low melting point of near 80°C, it flows well in controlled systems after simple melting, a key advantage for blending in chemical syntheses.

    Why We Focus on High Purity for Downstream Applications

    Over time, our work with specialty intermediates has highlighted how trace impurities—even at half a percent—can interfere with catalyst systems, alter polymerization profiles, or tint sensitive dyes. We produce 1,2,3,5-Tetramethylbenzene under conditions that minimize byproduct formation, like 1,2,4,5- or 1,2,4,6-isomers, and actively invest in refining fractionation protocols. This extra diligence avoids future headaches for our customers, especially for those in colorant and electronic chemical sectors, where product purity directly affects end-use reliability.

    We use fractional distillation and crystallization to produce material narrow in specification: typical water content is kept under 0.1%, and heavy-metal contamination sits below detectable limits. Aside from lab testing, we draw on feedback from repeat clients in pigment and resin manufacturing. Their challenges—batch-to-batch color drift, trace artifact formation—helped us shape specifications that genuinely support reliable operations downstream.

    Application Experience: More Than an Intermediary

    1,2,3,5-Tetramethylbenzene sees regular demand as an intermediate for specialty chemicals. Its value starts with its methyl-substituted benzene structure. In practice, methyl groups activate the aromatic ring for later transformations, so chemists prefer tetramethylbenzenes where they need controlled reactivity and defined substitution patterns. Unlike more common xylenes or trimethylbenzenes, the 1,2,3,5-isomer enables regioselectivity in oxidation and halogenation steps.

    We've watched our product flow into synthesis of polyimides and advanced resins. The four methyl groups allow for specialty cross-linking density in polymer networks, especially where engineers want stability at elevated temperatures. Some research groups have explored it in the formation of high-performance liquid crystals or charge-transport compounds, with results depending on the ability to maintain isomeric purity.

    Other clients request it for dye intermediate production. Color chemistries demand starting benzene rings that resist byproduct formation under heat and pressure. We take pride hearing from end-users in pigment manufacturing who confirm reduced side coloration and improved batch reproducibility with our material compared to alternatives sourced from outside China or from merchant traders with less control over purification.

    What Sets 1,2,3,5-Tetramethylbenzene Apart from Other Isomers?

    Some buyers ask whether different tetramethylbenzene isomers can be substituted interchangeably. The reality looks different. The 1,2,3,5-isomer provides four methyl groups in a symmetrical arrangement, yielding a distinct boiling point and melting point compared to 1,2,4,5- or 1,2,3,4-tetramethylbenzene. These physical property differences influence downstream crystallizations and separation steps.

    We've learned, after supporting customer troubleshooting, that substitution pattern drives far more than just product name. The 1,2,3,5-skeleton resists oxidation at meso positions, making selective functionalization possible at the remaining positions. By contrast, 1,2,4,5-tetramethylbenzene tends to promote side reactions in sulfonation and acylation programs, leading to lower yields. The ability to reliably source pure 1,2,3,5-Tetramethylbenzene unlocks options for R&D chemists and process engineers building new molecules with specific performance targets.

    We keep our isomer streams separate, avoid crossing lines between 1,2,3,5- and other tetramethylbenzenes, and archive test data for all shipped product batches. Over the years, institutional buyers have come to trust this track record, having seen first-hand how off-spec product upstream can end up ruining hours of downstream processing.

    Manufacturing Experience: The Human Side of Production

    Producing 1,2,3,5-Tetramethylbenzene relies on a close-knit team of chemical technicians, line engineers, and lab analysts. Each operator picking up a shift knows the differences in cracking patterns during methylation reactions. Our plant relies on fixed-bed catalyst reactors followed by high-precision distillation and crystallization. Even minor tweaks to column temperature can make the difference between material fit for electronic chemicals and one destined for solvent blends.

    Plant start-ups and maintenance require deep experience with hydrocarbon handling. Regular training sessions cover not just standard operating procedures but real stories—learning from batches that failed because of unnoticed traces of iron inside the reactor or a subtle sight-glass calibration drift. Transparency in corrections is valued as much as statistical yield increases. We practice open communication between the production and quality-control teams.

    Documenting production variables matters. Operators keep handwritten logs in addition to digital records—pressure drops, changes in distillate color, even odd noises during late-night runs. This human record augments formal testing, guiding decisions on process tuning during campaign shifts.

    Addressing Industry Needs and Looking Forward

    End users contact us not just for material but for advice: changing process pressures, adapting older plants to bromination with modern feedstocks, or troubleshooting unexpected byproducts in downstream units. Because of this, we invest resources into regular in-plant testing of new purification media and collaborate with instrument suppliers to optimize analytical techniques. For every batch released, a segment stays archived and available for retesting if questions arise months later. This promise supports customer claims and deepens trust.

    We frequently consult with technical groups at customer sites. The reality of production rarely matches the world of neat chemistry in the lab. Feedstock variability, trace catalyst poisoning, and outgassing during packaging all become practical concerns influencing real-world yields and final product performance. We've learned to approach these conversations with openness—sharing not just what worked but what didn’t, and how it shaped our current protocols.

    Most polymer intermediates projects require supply chain reliability. We keep in-house inventory buffers for regular clients to ease stress during raw material shortages or shipping delays. For clients scaling up pilot programs, we're prepared to ship production-scale lots with consistent QA and to adapt packaging modes, whether fiber drums for bulk use or smaller containers for sensitive R&D needs.

    Focus on Environmental Health and Safety

    Our commitment extends beyond batch release. Stringent measures limit fugitive emissions and minimize operator exposures. Closed handling, regular equipment leak testing, and solvent recovery cycles all reduce our environmental impact. Staff receive thorough training, not just on standard procedures but on incident response and chemical stewardship practices.

    We partner with local and international regulators to stay ahead of compliance changes, particularly surrounding VOC management. Regular investment in detection and abatement technology pays off for both our environmental footprint and the peace of mind of neighboring communities. We maintain transparent reporting and rapid response teams for any detected incident. This builds acceptance and trust not just with auditors, but with families living near production sites.

    Packaging, Storage, and Shipping—Lessons from the Loading Dock

    Safe, predictable transit of 1,2,3,5-Tetramethylbenzene remains a top priority after quality assurance. Given its moderate melting and boiling points, seasonal temperature swings may require heated transport or storage. Over the years, we've moved away from steel drums prone to residue formation and now favor polymer-lined containers that eliminate contamination risks.

    Warehouse crew double checks seal integrity and labeling, keeping inventory in temperature-controlled sections, separated from incompatible classes. We use time-stamped loading and delivery records, not just regulatory paperwork, for full traceability. Logistics partners receive thorough background checks and onboarding, and we perform regular driver training focusing on handling specifics and route risk assessment.

    Our sales and logistics teams coordinate directly with buyers' site managers, sharing updates on estimated arrival times and holding back-up stock at regional depots during peak buying cycles. These practices directly reflect experiences with weather delays, policy checks, and all-too-human error during busy seasons.

    Continuous Improvement—Driven by the Realities of the Plant

    Daily production of 1,2,3,5-Tetramethylbenzene brings opportunities for learning and advancement. Process engineers regularly review operational data, looking for energy optimization points and new catalyst candidates. Technicians collect feedback from each run—yield consistency, off-odors, filtration behavior—feeding it into monthly evaluations. While research and development teams explore greener synthesis routes, our scale-up group tracks the net impact of proposed changes on throughput, downtime, and waste.

    Feedback from partners and end-users rounds out this cycle. We've adapted collection schedules and adjusted support shifts following a client’s urgent production spike, and built in rapid-response sampling kits for labs needing to confirm purity overnight. Thanks to this feedback loop, continuous improvement shapes every facet of our manufacturing—from the first step of methylation through purification, sampling, and final shipment.

    Sharing these experiences fosters a reality-based relationship with customers. Trust, in the end, grows from open discussion, fast response, and a history of problems solved together as much as it does from the technical merits and certificates attached to each shipment.

    The Value of Source Transparency

    Being the actual manufacturer gives us control and delivers accountability that traders or middlemen rarely match. Customers value knowing exactly where and how the chemical is produced, which materials feed into the reactors, and who stands behind each batch. We welcome plant tours, share operational documentation (within confidentiality agreements), and provide analytical reports upon request. This gives partners assurance against risk and strengthens business ties.

    Long-term supply relationships benefit both sides, not only through price stability but through mutual understanding—alerting each other to changing needs, new application testing, and even industry trends. Our role as source manufacturer enables deep technical troubleshooting, custom packaging adjustments, and advisement on quality specs outside the reach of generic offerings.

    Challenges and Solutions: A Daily Part of Our Work

    Not every production campaign goes to plan. Learning from equipment breakdowns or off-spec raw materials is part of our reality. Sometimes an overnight reactor fouling or supply chain hiccup forces a halt. We've established reserve capacity in auxiliary equipment and trained extra operators to step in on short notice for recovery operations. Raw material audits and backup supplier qualification are regular, not just crisis measures.

    Customers sometimes face unusual requirements—regulatory certifications, supply for high-purity prototype runs, or shipment to challenging territories. Our technical and compliance teams guide partners through documentation, regulatory test protocols, and customized labeling. Complex problems—like needing to guarantee absence of specific microcontaminants for a pharma or electronics project—receive individual attention from our R&D and QA groups.

    Real experience has taught us: only through adaptation and responsiveness can supply disruptions and shifting market needs be managed with minimum disruption. This keeps production lines running smoothly, not just at our site but throughout the value chain. For us, this is more than production; it’s a promise to deliver reliability and partnership with every order, large or small.

    Conclusion—Trust Built Over Production, Batch by Batch

    Manufacturing 1,2,3,5-Tetramethylbenzene goes beyond merely providing a compound. It means carrying responsibility for the next link in the chain—whether enabling cleaner pigment runs, more stable polymers, or new innovation in R&D labs worldwide. Years on the ground have given us a healthy respect for detail, clear labeling, strong process documentation, and the value of honest feedback.

    From careful selection of raw materials, conscientious equipment maintenance, technical transparency, and a responsive support team, we strive to embody professionalism rooted in daily practice and genuine pride in production. End-users recognize this not just in words but every time they open a drum, sample a lot, or solve a problem together with us on the phone or in the plant.

    This is the product of experience, real teamwork, and an open-door approach. We look forward to new challenges and new opportunities as industry demands evolve, always anchored by the real-world needs of our customers who trust us as their manufacturing partner.