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HS Code |
401360 |
| Product Name | 2-Chloro-4-(Trifluoromethyl)Benzenesulfonyl Chloride |
| Cas Number | 52875-06-6 |
| Molecular Formula | C7H3Cl2F3O2S |
| Molecular Weight | 297.07 |
| Appearance | White to off-white crystalline powder |
| Purity | Typically ≥98% |
| Melting Point | 48-52°C |
| Density | 1.64 g/cm³ |
| Solubility | Reacts with water; soluble in organic solvents like dichloromethane |
| Smiles | C1=CC(=C(C=C1S(=O)(=O)Cl)Cl)C(F)(F)F |
| Storage Conditions | Store in a cool, dry place; keep container tightly closed |
As an accredited 2-Chloro-4-(Trifluoromethyl)Benzenesulfonyl Chloride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging is a tightly sealed 100g amber glass bottle, labeled with hazard warnings and product information for 2-Chloro-4-(trifluoromethyl)benzenesulfonyl chloride. |
| Shipping | 2-Chloro-4-(Trifluoromethyl)benzenesulfonyl chloride is shipped in tightly sealed, corrosion-resistant containers, protected from moisture and direct sunlight. Classified as a hazardous material, it is transported in accordance with international regulations (such as IATA, IMDG, and DOT), ensuring safety with proper labeling and documentation. Suitable protective measures are mandatory during handling and transit. |
| Storage | 2-Chloro-4-(trifluoromethyl)benzenesulfonyl chloride should be stored in a cool, dry, well-ventilated area, away from moisture, heat, and incompatible substances like bases and strong oxidizers. Keep the container tightly closed and protected from light. Store under an inert atmosphere if possible, and ensure proper labeling to prevent accidental exposure or mixing. Use secondary containment to minimize spill risk. |
Applications of 2-Chloro-4-(Trifluoromethyl)Benzenesulfonyl Chloride in Industrial ManufacturingAs a specialized manufacturer of 2-Chloro-4-(Trifluoromethyl)Benzenesulfonyl Chloride, we supply this intermediate for a range of high-value downstream industrial applications. The following sections detail real-world use cases, compliance, formulation ratios, process integration, and end-user product types in core industries. 1. Pharmaceutical Intermediate Synthesis for Sulfonamide DrugsThis compound acts as a sulfonylation agent during the synthesis of advanced pharmaceutical intermediates, especially for third- and fourth-generation sulfonamide antibiotics. Its introduction occurs after the amine functionalization step, enabling the formation of sulfonamide linkages with complex heterocycles. Manufacturers adjust the reagent charge based on the targeted active pharmaceutical ingredient (API) structure and required purity profile. Downstream process steps include crystallization and high-performance liquid chromatography (HPLC) purification, meeting strict regulatory and batch consistency needs. Industry compliance standards
Typical usage ratio
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2. Agrochemical Active Ingredient ProductionUsed as an electrophilic sulfonylation reagent, this material enables the formation of substituted sulfonamide and sulfone functional groups in herbicide and fungicide actives. The compound is dosed during the multi-step synthesis of proprietary agrochemicals. Stringent quality controls target heavy metals and residual solvent impurities because of regulatory residue limits in food crops. The addition point varies with target molecule, followed by work-up under controlled pH and subsequent formulation into finished products such as granules or EC concentrates. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
3. Electronics-Grade Functional Polymer ModificationIntegrators in specialty polymer manufacturing use this chlorosulfonyl reagent during the grafting of sulfonated side chains onto aromatic resins and polyimides. This functionalization step enhances ionic conductivity, chemical resistance, and film-forming behavior in high-performance membranes and coatings for electronics. It is introduced under anhydrous, inert conditions, with feed ratios tuned for desired IEC (ion exchange capacity) and crosslink density. Post-grafting, the intermediates undergo acid trapping, filtration, and film casting steps; all operations must minimize residual halide content for device performance and long-term product stability. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
4. Advanced Dye and Pigment Intermediate ManufacturingIn industrial dye synthesis, this compound establishes sulfonated linkages for colorfastness and solubility enhancement. Used in the creation of triarylmethane and azo dye intermediates, it reacts with amino- or hydroxy-terminated cores during the mid-synthesis phase. Reaction conditions and stoichiometry adjustment depend on desired sulfonation depth and final chromatographic purity targets. QC labs test color value, residual inorganic, and sulfonyl chloride profile post-reaction. This integration phase precedes diazotization or metal complexation, with batch handling and waste minimization as operational priorities for environmental discharge compliance. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
5. Custom Synthesis for Fine Chemicals and Specialty Fluorinated CompoundsChemical processors value this material for introducing both chlorosulfonyl and trifluoromethyl groups into advanced molecular scaffolds. It enables the creation of high-value building blocks in organic synthesis, including pharmaceutical research and crop protection lead compounds. Reaction parameters vary with substrate; typical practice includes low-temperature addition and subsequent quenching to control exotherms and side reactions. The downstream process may involve stepwise derivatization or further nucleophilic substitutions, and strict oversight is required to ensure operator safety and environmental protection. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
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From years of experience understanding the priorities of fine chemical synthesis, our team recognizes the need for reliable, efficient reagents. 2-Chloro-4-(Trifluoromethyl)Benzenesulfonyl Chloride stands apart based on its behavior and advantages in modern process chemistry. Synthetic pathways for pharmaceuticals and agrochemicals have changed rapidly. Reagents no longer serve a single purpose: they are expected to offer selectivity, practical yields, and predictable behavior under scale-up conditions. After thousands of hours spent on continuous improvement and listening to process engineers and chemists, our focus rests on purity, traceability, and scalable consistency.
Some will ask: does yet another sulfonyl chloride truly make a difference? After years of practical work, we find that the combination of the chloro group at the 2-position and a trifluoromethyl at the 4-position creates specific and sometimes surprising properties. The electron-withdrawing trifluoromethyl, especially when paired with the ortho-chloro, tunes reactivity without making the compound overly aggressive. During sulfonamide formation or coupling steps, these subtle electronic effects bring higher yields, avoid side reactions, and give a cleaner profile even at higher concentrations.
We have run this material through real-world stress testing with a range of amines, alcohols, and even less common nucleophiles. Many find that, unlike plain benzenesulfonyl chloride, our compound responds with a narrower exotherm and a more manageable pH shift. It withstands temperature swings and remains pourable—no clumping, no unexpected byproducts. Each lot passes rigorous chromatographic checks, tracking not just purity but unwanted isomers or residual starting material. That’s not just theory; that’s what our own R&D technicians see every day in the pilot hall and on customer audits.
The regulatory bar keeps rising. Toxicological profiles, environmental risk, and waste stream management define production possibilities as much as chemistry does. We’ve built our process to avoid dioxin byproducts and optimizes for solvent recovery at every distillation. When using our 2-Chloro-4-(Trifluoromethyl)Benzenesulfonyl Chloride, teams find fewer headaches downstream—less halogenated residue shows up in the final product, and clean-up batches need less solvent. Engineers gain a little breathing room, knowing there’s less risk of equipment corrosion or blockages.
Most organizations want real answers before switching reagents: Will it dissolve fast enough for inline dosing? Will it handle elevated temperatures? We ran head-to-head trials, finding that our product dissolves smoothly in aprotic and protic solvents, tolerates mild moisture, and can be charged with controlled rates even during continuous flow. The sharp, biting smell often found with standard sulfonyl chlorides barely registers here, which speaks not only to its chemical stability, but also makes a difference for anyone working regularly with grams or kilograms.
Within the expanding portfolio of sulfonyl chlorides, this molecule claims a space that others cannot. Demand from the pharmaceutical sector for niche sulfonamides—especially those incorporating fluorinated motifs—continues its climb. Medicinal chemists, developing novel scaffolds with better bioavailability, rely on tools that minimize downstream purification. One crucial insight from our clients: the selectivity pattern offered by this compound means that protecting and deprotecting groups becomes less of a gamble. In our hands, even scaling up a ‘one-pot’ procedure or transitioning from glassware to steel reactors showed unexpected success.
Agrochemical synthesis also benefits, notably when regulatory filings now mandate documentation on trace impurities. The robust structure resists both hydrolysis and photolysis over storage and transport, so that a container opened four months after arrival behaves like one opened the first week. Polymer chemists have asked more recently about alternative sulfonyl chlorides for functionalization, often to get around patent barriers or to improve compatibility with complex monomers. Our experiments confirm that this molecule attaches predictably and leaves behind minimal residue.
Scale-up often uncovers hidden problems in a chemical thought to be ‘well understood’ at the bench. Sticking valves, volatile off-gassing, solidification, or erratic color changes have shut down more than one batch. We designed our process to avoid the usual pain points—starting with raw material selection and extending through purification. Finished lots show a controlled melting range, tight GC and NMR fingerprint, and no unpredictable degradation during transfer.
We do not rely on speculative post-processing tricks. The chemistry stems from a well-established sulfonation and chlorination route, refined to knock down trace side-products that become liabilities during regulatory filings. Customers have flown in for inspections and walked through our control labs. During one such visit, a customer remarked on how our batches showed ‘remarkable uniformity’ even after repeated exposure to variable humidity. This feedback repeats itself again and again—critical for those loading material into reactors that may sit for hours before processing.
Years ago, technical managers would judge a reagent solely by purity or certificate of analysis. We learned that those numbers do not tell the whole story. What matters more, whether dealing with kilogram or ton shipments, is the absence of dusting, slow degradation, and unreliable dissolution. Our 2-Chloro-4-(Trifluoromethyl)Benzenesulfonyl Chloride receives specific anti-caking treatment only if the application tolerates such additives—most customers take pride in a clean, untreated product, so we developed moisture-barrier packaging tested for puncture and static build-up throughout international shipping routes.
Every drum and container undergoes a retention sample program that tracks lot behavior for at least one year. In the rare instance of an out-of-specification event, we maintain a closed traceability record and can reproduce environmental exposure results for those reviewing compliance paperwork. When end users talk about their experience, packaging and handling rates as high as chemical purity. By integrating quality control with logistics and storage tests, we eliminate many of the headaches that traditional suppliers never see.
For those working in industries with plenty of alternatives—some generic, some proprietary—choosing the right sulfonyl chloride extends beyond catalog numbers. Plain benzenesulfonyl chloride, available widely, comes cheap but lacks selectivity and produces more side reactions, raising labor and disposal costs. Alternatives with bulkier or more reactive substituents often introduce unwanted toxicity or degrade in storage. We have worked directly with users, mapping reaction profiles and waste streams, and consistently find our molecule offers a sweet spot between reactivity and control that cuts waste at source.
In applications where fluorine content is valued, our product keeps pace with those featuring perfluorinated rings, but without the high cost or hazardous handling issues. Most other products fall short in environmental fate; they produce long-lived fluorinated or chlorinated byproducts flagged in international regulatory discussions. With our process, impurity profiles stay within defined limits, and recovered solvents can be reused—facts that matter for those asked to prove circular chemistry. Cost analysis over five years, comparing total operating costs (including waste and rework) favors our product even in settings with slim production margins.
Teams of chemists and engineers shape our manufacturing process every day. They bring troubleshooting experience, not just theoretical knowledge. A recent plant expansion saw the construction of equipment designed specifically for handling complex sulfonyl chlorides—a nod to the lessons learned from lost batches, corroded valves, and missed production targets. Each modification over the years has tackled a problem actually experienced, adding up to a process built on firsthand feedback rather than textbook advice. We listen—every plant shutdown, every customer complaint, every unexpected yield drop translates into new quality checks or equipment upgrades.
Technical support flows directly from our own internal use. Product managers routinely simulate customer-scale reactions to stress-test handling and reactivity. Formulation chemists receive not just a drum, but an entire handling protocol, giving them confidence to integrate the material without weeks of preliminary work. Anecdotes surface almost monthly: a direct customer produces a new sulfonamide API, credits a switch to our reagent for reducing column runs by half, or avoids a regulatory hold-up due to our consistent impurity management.
Regulatory landscapes shift quickly, sometimes unexpectedly. Persistent organic pollutants, process safety, and carbon footprint now command as much attention as synthetic yield or throughput. Our plant invests steadily in real-time process monitoring, non-halogenated solvent recovery, and clean-in-place systems. We’ve phased out legacy utilities that power inefficient chlorination units in favor of modular setups that scale energy use to demand. Suffice to say, this product emerged from a wider push for sustainability—waste capture, emissions reduction, and material traceability drive every process update.
Credibility grows with action, not slogans. Our sustainability efforts are quantifiable—annual audits confirm reductions in waste and emissions per ton produced. Customer partnerships have led to successful closed-loop disposal systems and minimized storage risks. This experience, evolving year by year, fortifies trust and builds a real foundation for chemical supply chains that last.
Chemical manufacturing never stands still. We field questions from research directors trying to meet an impossible deadline or supply chain managers coping with a late truck. Each call or inquiry receives attention anchored in firsthand experience. Chemists who face a clogged filter at 2am know how costly a mistake can be, so we provide transparent, actionable advice, not copy-paste answers. If a customer stumbles on an unexpected problem—dissolution rate, color drift, or byproduct formation—we retrace their process in our own lab before sending guidance. Professional support comes from real know-how, gained on the production floor and in dozens of customer facilities.
We hold ourselves to the standard we expect from our own partners—fast, accurate, and rooted in experience. It never matters how many tons leave our gates; even the smallest user deserves the same attention to quality and consistency. Feedback from those on the ground is always welcome and routinely sparks our next round of innovation. You will always find a voice ready to dive into the chemistry and logistics with you, instead of skimming a spec sheet.
Working directly as a manufacturer, with hands both on the levers of reaction vessels and in analytical labs, means discovering and fixing issues that matter most to industry users. Our 2-Chloro-4-(Trifluoromethyl)Benzenesulfonyl Chloride does not simply fill a space in an inventory list—it solves the daily challenges of regulatory compliance, yield reliability, process safety, and ease of handling. Real-world experience underpins its design and production, with every improvement anchored in what chemists, engineers, and operators encounter at full scale.
From bench-top discovery to 20-ton reactors, and from research breakthroughs to audited supply chains, we place our reputation behind each shipment. We see chemistry not as theory or abstract potential, but as a tool with real impact, for those doing the work and pushing the limits of what’s possible in synthesis and manufacturing.