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HS Code |
499703 |
| Chemical Name | 1,2,3,4-Tetrachlorobenzene |
| Cas Number | 634-66-2 |
| Molecular Formula | C6H2Cl4 |
| Molecular Weight | 215.89 g/mol |
| Appearance | White crystalline solid |
| Melting Point | 149-150 °C |
| Boiling Point | 278-279 °C |
| Density | 1.658 g/cm3 (20 °C) |
| Solubility In Water | Insoluble |
| Flash Point | 138 °C |
| Iupac Name | 1,2,3,4-Tetrachlorobenzene |
| Odor | Odorless |
| Refractive Index | 1.595 |
| Pubchem Cid | 12213 |
As an accredited 1,2,3,4-Tetrachlorobenzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | A 500-gram amber glass bottle with a tightly sealed cap, labeled “1,2,3,4-Tetrachlorobenzene,” hazard symbols, and safety instructions. |
| Shipping | 1,2,3,4-Tetrachlorobenzene should be shipped in tightly sealed containers, clearly labeled with appropriate hazard warnings. It is classified as a hazardous material and must comply with regulations for handling and transportation, including placarding, documentation, and protective measures to prevent spills or exposure. Store in a cool, well-ventilated area away from incompatible substances. |
| Storage | **1,2,3,4-Tetrachlorobenzene** should be stored in a tightly sealed container, away from direct sunlight, heat sources, and incompatible substances such as strong oxidizers. Keep the container in a cool, dry, well-ventilated area, and ensure it is clearly labeled. Prevent moisture ingress and avoid storage near food or drink. Follow all applicable safety and regulatory guidelines for hazardous chemicals. |
Applications of 1,2,3,4-Tetrachlorobenzene in Industrial ManufacturingWe consistently supply 1,2,3,4-Tetrachlorobenzene to chemical manufacturers operating in highly controlled and regulated production chains, where this compound is required for specific synthetic and transformation steps. Its unique chlorination pattern supports use in several focused industrial downstream applications, as detailed below. All application scenarios reflect actual industrial practice based on stringent quality, regulatory, and process requirements in the global chemicals sector. 1. Intermediate for Agrochemical Synthesis (Herbicide Production)Major agrochemical manufacturers employ 1,2,3,4-Tetrachlorobenzene as a key chlorinated aromatic intermediate when synthesizing specific classes of selective herbicides, including acetanilide and phenoxyalkanoic derivatives. Producers introduce it at the initial condensation or halogenation stage, where its high chlorination ensures consistent reaction yields and purity profiles. Downstream formulation facilities incorporate this intermediate under strictly controlled environmental and operator safety protocols. Industry compliance standards
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2. Precursor in the Manufacture of Specialty DyesIndustrial dye manufacturers use 1,2,3,4-Tetrachlorobenzene as a controlled halogen donor in the synthesis of several chlorinated azo and phthalocyanine dye families, primarily to enhance the light fastness and solvent stability of pigment preparations. This compound enters the synthesis at the diazotization or coupling phase; its unique chlorine positional arrangement imparts the desired spectral properties and color depth within the target dye molecule. Industry compliance standards
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3. Raw Material for the Synthesis of Polychlorinated Biphenyl Derivatives (PCB Intermediates)Chemical producers requiring high-chlorine content aromatics use 1,2,3,4-Tetrachlorobenzene as a starting material in the controlled preparation of polychlorinated biphenyl (PCB) intermediates, which serve in non-dielectric technical applications. This compound enables consistent halogenation and structural uniformity within downstream condensation and dehydrochlorination reactions, facilitating strict batch-to-batch quality control and traceability measures. Industry compliance standards
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4. Chemical Feedstock for Synthesizing Higher Chlorinated BenzenesChlorinated aromatics manufacturers harness 1,2,3,4-Tetrachlorobenzene as a platform molecule to obtain higher homologs such as pentachlorobenzene and hexachlorobenzene through carefully phased monochlorination in the presence of Lewis acid catalysts. This pathway allows tight control over isomer purity, minimizing byproduct formation and meeting output specifications for electronic and specialty chemical sectors requiring precision-chlorinated aromatic compounds. Industry compliance standards
Typical usage ratio
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Stepping onto the plant floor, the air hums with the steady rhythm of synthesis. We know every corner of this process—sourcing top-grade feedstock, steady control of chlorination reactors, rigorous condensation steps. This is how 1,2,3,4-tetrachlorobenzene, with the model number TCB-134, begins its journey from crude raw material to finely detailed chemical compound. No step happens by accident. Every distillation tower, every holding tank, and each filtration unit operates in sync, guided by experience, oversight, and testing at every stage.
Our product enters the world as off-white to pale yellow crystals, recognized by anybody with years behind a chemical bench. As soon as we see, feel, and smell the batch—persistent, faint aromatic—we know we’ve built in the type of purity that plant workers and our customers rely on. Freight managers and warehouse staff expect 1,2,3,4-tetrachlorobenzene to move out in fiber drums or lined bags, ranging in size from a research-use container up to metric tons for industrial runs. Precise melting and boiling points matter here. They can spell the difference between a material that works and one that fails in a customer’s application.
All chlorinated benzenes share the same hexagonal backbone, but subtle differences in their substitution pattern change everything down the production line. From the very first batch, we paid close attention to isomeric purity, because every application—dye making, agrochemicals, PCB manufacturing—demands a consistent material. We see the distinction firsthand. In quality control, our chemists run gas chromatographs and NMR scans, searching for signs of the wrong isomers or trace byproducts that could gum up a synthesis or affect downstream safety.
Take 1,2,3,4-tetrachlorobenzene compared to its close cousin, 1,2,4,5-tetrachlorobenzene. Switching just one chlorine from the 5- to the 3-position changes the molecule’s melting point, its reactivity, its utility in chemical formulations. We have learned—sometimes the hard way—that a batch with the wrong isomeric ratio leads to headaches in downstream halogenation or catalytic conversions. That’s why our process tightens the margins, stacking analytics throughout the flow. For those in industrial synthesis or specialty chemical manufacture, getting 1,2,3,4-tetrachlorobenzene with low levels of polychlorinated dibenzodioxins or furans is non-negotiable. Our scrubbers and multi-stage crystallizations handle this, batch after batch.
Early on, we heard plenty from clients about the downstream struggles: solvents picking up impurities, catalysts poisoned by unpredictable residues, or inconsistent yields in pigment production. Since then, we’ve engineered every kilogram of TCB-134 to avoid those pitfalls. In fine chemicals work, the aromatic ring’s position allows efficient nucleophilic substitution, making it an effective building block for agrochemical intermediates or as a feedstock in synthesis of specialty flame retardants.
Customers in the dye industry, often under heavy pressure for color consistency and process safety, have told us how much small variations matter. Too much non-volatile residue and their mixing kettles clog. Poor melting point control, and filtration times shoot up. Years of tight QC and packaging improvements have locked these non-conformances down. Our warehouse keeps stocks clean and traceable, giving our clients uninterrupted supply and minimized handling loss.
Tech transfer doesn’t always run smoothly, though. We once worked with a customer switching up from another manufacturer’s mixed tetrachlorobenzene blend. Their yield curve flattened unexpectedly, making us trace minute differences in isomer composition. Careful batch matching and blending brought the process back online. Whatever the end-use—be it herbicide precursor, dielectric formulation, or a raw material for deodorant-grade phenol derivatives—something as small as side isomer content makes a world of difference to those who stake their plants’ performance and safety on every drum received.
Few people outside of production realize the fine balance required in chlorination. Too cold, and you build up intermediates; too hot, and over-chlorination leads to waste products or environmental headaches. Automation has helped, but nothing replaces the sight and smell that comes from years of batching and blending. The same attention to detail runs through our utility systems—scrubbing off-gases, recycling chlorinated byproducts, and handling aqueous waste as strictly as any regulatory inspector would demand.
Handling of 1,2,3,4-tetrachlorobenzene raises its own environmental questions. We’ve worked to cut fugitive emissions and reduce persistent contaminants through better containment and scrubbing. Meeting international standards on persistent organic pollutants is never a checkbox exercise. Auditor visits and customer traceability require records going back years, with every deviation logged and corrected. Our quality assurance people have learned to be relentless, knowing the consequences of small errors.
On the shop floor, regular monitoring and cross-training help the crew keep fresh eyes on safety. Working with material at scale means keeping controls tight—ventilation, PPE, emergency spill drills, and regular medical checks for chlorinated aromatic exposure. Even for those who work in shipping and logistics, the importance of labeling and container integrity can’t be forgotten. Clear markings, tamper-proof closures, and regular audits guard against confusion in a crowded warehouse or on a busy loading dock.
Surges in demand—for example, when a pesticide formulation hits a new market or a specialty dye plant scales up—can challenge any supply chain. We’ve expanded storage, kept alternative packaging lines, and sustained close communication with transport providers to avoid bottlenecks. Raw material price swings, usually tied to upstream chlor-alkali pricing, have forced us to optimize reactor efficiency and energy management.
Nobody knows the meaning of “supply interruption” like a plant manager with an idle unit or an order backlog. That’s why resilience and transparency run through our operation. We keep technician teams on-call, stack inventories where possible, and keep a close relationship with upstream and downstream players. Whenever incidents arise—weather disruptions in transport, regulatory audits, or even geopolitical shifts affecting precursor availability—our team circles the wagons. Regular scenario planning with logistics and supply staff has probably prevented more missed shipments and dry runs than anyone outside manufacturing could imagine.
We know regulators push hard on chlorinated aromatic compounds due to environmental and safety risks. Our documentation runs deep—each lot leaves the plant with comprehensive certificates, GC-MS spectra, and documented QA signoffs. Safety Data Sheets (SDS) leave with each shipment, updated in line with latest local and global regulatory changes.
For customers in the EU, US, and Asia-Pacific, we undergo REACH, TSCA, and other regulatory checks. We’ve opened up plant tours, external audits, and remote traceability checks for those who expect industry-best transparency. Every client deserves assurance that what arrives matches what’s promised in technical discussions—and their own teams’ safety, environmental, and downstream process dependability depend on it.
Errors and recalls cost everyone. Down the years, we’ve invested in automation, continuous flow reactors for critical steps, and more sensitive impurity controls. Better root cause analysis and preventive maintenance have helped us reduce unplanned shut-downs. The technical team won’t sign off on shipments unless every box is checked: not just for product consistency, but also for container safety, labeling clarity, and paper trail. It’s not just compliance; it’s respect for the technicians on the receiving dock and the chemists on the synthesis line.
Customers sometimes ask about other chlorinated benzenes. We’ve run the tests ourselves. For those building agrochemical intermediates, 1,2,3-trichlorobenzene or other tetrachlorobenzene isomers may look enticing—sometimes slightly cheaper, sometimes broader in supply. Yet performance data and process feedback often prove otherwise. Side reactions multiply. Non-target isomers complicate purification in downstream fine chemical plants.
Even subtle changes—such as switching from our 1,2,3,4-variant to 1,2,4,5-tetrachlorobenzene—can bump up byproduct levels on some catalytic runs by 15 to 20% or more, based on feedback from our largest industrial customers. This isn’t just lab theory. Customers who have performed process validation on their own lines have told us about increased need for rework and scrapping when variant blends slip in. In the world of regulated chemicals, errors multiply quickly into costs, compliance risk, and plant downtime. Working with our material means fewer interruptions, greater peace of mind, and better fit for demanding syntheses.
Some of our customers, especially larger multinationals, have asked for joint work on further purification steps or tailored resorting to ultra-pure 1,2,3,4-tetrachlorobenzene grades. Our engineering and lab teams have collaborated directly with end-users to create tailored grades meeting extreme thresholds for solvent residues, heavy metals, or water content. In industrial practice, these ultra-pure batches have extended platform run-times in sensitive applications and simplified waste management protocols.
Every year, the global drive for greener manufacturing amps up. Handling chlorinated aromatics prompts tough questions around effluent, fugitive emissions, and lifecycle impact. On our end, we’ve adopted closed-loop processes, improved heat integration, and invested in better onsite effluent treatment. Solvent recycling and energy recovery from exothermic steps feed back into the plant’s own system.
Our production engineers trial new catalysts and alternative chlorinating agents, focusing on yield improvement and fewer unwanted oligomers. Research into continuous processes—especially for steps that have lingered as batch operations for decades—has moved from concept to reality, increasing throughput and reducing waste mass. While not every innovation pays off immediately, continuous improvement gives us an adaptable, forward-thinking operation that has weathered price volatility, regulation changes, and demanding customers.
Besides process tweaks, reduction of off-spec material makes a real difference. Plant experience shows that regular skills upgrades for operators, sharper sensors, and better data tracking all help catch drifts before they become big enough to impact waste or batch loss. We share our learnings with sector partners, knowing that raising the bar across the supply chain helps everyone prevent costly recalls and meet increasing government scrutiny on environmental disclosures.
We rarely work in isolation. Customer R&D teams reach out with specific supply or regulatory challenges. Sometimes it’s about stricter impurity limits. Other cases concern custom packaging for automated dosing. Technical exchanges, plant visits, and pilot batch productions have forged long-term partnerships across the globe. By keeping lines of communication open, we avoid surprises—for both sides.
Feedback from application engineers guides us in refining production. We’ve adopted new analytical techniques, revalidated shelf life claims after extended storage studies, and even responded to customer requests for updated hazard labeling as definitions shifted. Trust builds up over repeat orders and years of technical service calls, bolstered by genuine field knowledge rather than empty sales rhetoric.
Industry standards don’t stand still. New environmental protocols, increased transparency about supply chain origins, and deeper documentation all bring challenges. But over the years, by investing in plant upgrades, third-party audits, and direct communication with technical teams at customer sites, we have stood shoulder to shoulder with users who want not only good product, but peace of mind and dependable partnership.
Managing a multi-ton batch of 1,2,3,4-tetrachlorobenzene means discipline—a strong hand on process control, deep documentation, and trust between production, QA, and shipping crews. Mistakes have consequences beyond the plant fence. Extra cleaning cycles, emergency disposal, or customer production lines standing idle weigh on every batch released. The margin for error narrows as regulatory and market pressures grow.
We've seen customer operations ride on flawless chemistry. Their business—often in pigment, electronics, or crop protection—depends on finely tuned performance, repeatable behavior, and purity. That’s why every link in our chain, from laboratory technician to shipping coordinator, values candid communication. If we spot a variation or new impurity, customers hear it straight from us, no surprises. Such openness builds bonds that last longer than any procurement cycle.
Beyond product, our know-how in scale-up, impurity troubleshooting, and tailored packaging often makes the difference in a crowded chemical marketplace. Our track record tells its own story in lower non-conformance rates and repeat clients who know they can count on a direct line back to the know-how behind their deliveries.
1,2,3,4-tetrachlorobenzene has proven its staying power as an essential building block for modern chemistry—textiles, specialty coatings, agricultural ingredients, heat transfer media, and more. Every year, the bar rises on quality, documentation, and environmental performance. We look ahead with eyes open to new regulatory realities, tighter purity windows, and tougher customer audits.
Plant modernization and operator training continue to get attention and investment. Production management reviews emerging purification and analysis technologies. Technical exchanges, both domestic and global, ensure up-to-date standards and shared best practices. Those who order TCB-134 from us aren’t just acquiring a chemical—they’re accessing decades of field-tested expertise and hands-on operational assurance.
1,2,3,4-tetrachlorobenzene stands out among chlorinated benzenes for its consistency, performance, and adaptability. This is the result of daily diligence, decades of chemical insight, and mutual trust with every end user. As new markets open and customer needs evolve, we’re right there, boots on concrete, ready to meet new challenges head-on, drawing on both proven processes and a commitment to find a stronger, cleaner, and more responsive way forward.