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HS Code |
663711 |
| Chemical Name | 4-Bromo-Benzenesulfonic Acid Potassium Salt |
| Molecular Formula | C6H4BrKO3S |
| Molecular Weight | 291.16 g/mol |
| Appearance | White to off-white powder |
| Cas Number | 25098-01-9 |
| Melting Point | 283-287 °C (decomposes) |
| Solubility In Water | Soluble |
| Storage Temperature | Room temperature |
| Purity | Typically >97% |
| Synonyms | Potassium 4-bromobenzenesulfonate |
As an accredited 4-Bromo-Benzenesulfonic Acid Potassium Salt factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | White plastic bottle with a tight-sealing screw cap, labeled "4-Bromo-Benzenesulfonic Acid Potassium Salt, 100g," displaying hazard and safety information. |
| Shipping | 4-Bromo-Benzenesulfonic Acid Potassium Salt is shipped in sealed, chemical-resistant containers to prevent moisture and contamination. Transport complies with relevant regulations for non-hazardous solid chemicals. Packages are labeled clearly and accompanied by a safety data sheet. Storage during transit should be cool and dry, avoiding exposure to extreme temperatures or incompatible substances. |
| Storage | 4-Bromo-Benzenesulfonic Acid Potassium Salt should be stored in a tightly sealed container, away from moisture and incompatible substances such as strong oxidizers. Keep it in a cool, dry, and well-ventilated area, protected from light and heat sources. Proper labeling and secondary containment are recommended to prevent contamination and accidental mixing with other chemicals. |
Applications of 4-Bromo-Benzenesulfonic Acid Potassium Salt in Industrial ManufacturingAs a direct manufacturer of 4-Bromo-Benzenesulfonic Acid Potassium Salt, we supply industrial producers with consistent, high-purity material for critical downstream applications. Our material supports advanced synthesis requirements across specialized sectors, with full traceability through audited quality systems and defined industrial standards. Below, we detail the core applications in which this material has proven performance, including industry-specific formulation, compliance, and downstream process integration information for each. 1. Dye Intermediate Production for Reactive DyesOur material is widely used as a sulfonation intermediate in reactive dye synthesis, where the bromine functionality facilitates targeted aromatic substitutions and coupling reactions. Producers of textile dyes apply this intermediate during azo coupling steps, enabling manufacture of water-soluble colorants with controlled sulfonate content. Consistent batch characteristics are essential to ensure reproducibility of both color shade and dyeing performance on cellulose fabrics. Automated dosing and in-process controls help meet regulatory absences of restricted aromatic amines in finished dyes. Industry compliance standards
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2. Pharmaceutical Intermediate Synthesis—Sulfonic Acid-Substituted Building BlocksPharmaceutical manufacturers incorporate our product as a brominated sulfonic acid source in the multi-step synthesis of complex drug intermediates, particularly where strict control of aromatic substitution is required. The high aqueous solubility and defined reactivity of the potassium salt enable selective formation of sulfonated and brominated scaffolds under cGMP environments. Downstream controls focus on residual inorganic and organic impurities to meet pharmacopeial limits for further API processing. Industry compliance standards
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3. Manufacture of Electroplating Additives—Brightener and Grain Refiner PrecursorsElectrochemical industries use this material in the preparation of brightener and grain refiner formulations for metal finishing baths, especially nickel and copper. The compound supports the introduction of sulfonate groups into aromatic additive scaffolds, influencing deposit structure and surface gloss. Controlled dosing, trace metal monitoring, and solution stability are necessary to prevent interference with electroplating efficiency and minimize introduction of banned elements in final deposits. Industry compliance standards
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4. Synthesis of Specialty Surfactants—Aromatic Sulfonate Surfactant IntermediatesProducers of industrial surfactants use brominated aromatic sulfonates as intermediates for specialty anionic surfactant synthesis, often in emulsion polymerization or oilfield formulations. The bromine substituent imparts targeted reactivity for further organic modification, enhancing surfactant solubilizing power and interfacial performance in demanding conditions. In-house QC controls focus on bromide and sulfate residues to align with performance and environmental targets. Industry compliance standards
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5. Advanced Polymers—Functional Monomer for Conducting Polymer SynthesisProducers of advanced functional polymers incorporate this compound as a monomer precursor in the synthesis of electrically conducting polymers and copolymers. The aromatic sulfonic acid group provides ionic conductivity, while the bromine position allows for further cross-linking or grafting, essential for fine-tuning polymer film properties. Stringent control of polymerization kinetics and raw material purity is required to achieve batch-to-batch uniformity and prevent introduction of conductive defects. Industry compliance standards
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6. Photographic Chemical Manufacturing—Sulfonated Sensitizer and Coupler SynthesisProducers of specialty chemical components for analog photographic and radiographic films employ this compound to introduce brominated sulfonic groups into dye couplers and spectral sensitizers. The careful management of halogen substitution via controlled addition maintains the sharp spectral response and dye stability demanded by high-performance imaging applications. Residual halide and sulfonate contaminants are tightly specified in finished compounds destined for the photographic sector. Industry compliance standards
Typical usage ratio
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In the chemical industry, certain compounds hold importance because of their consistent performance and predictable results in the lab and on the production line. Among these, 4-Bromo-Benzenesulfonic Acid Potassium Salt continues to play a significant role for formulators and researchers working with sulfonated aromatic compounds. From day-to-day operations at our manufacturing plant to the technical discussions with long-term buyers, we’ve seen this compound prove its worth in many synthesis projects.
The material, which appears as a white to off-white powder, shows impressive solubility in water and demonstrates good chemical stability under a typical range of laboratory conditions. Potassium salts like this one often edge ahead of sodium or ammonium variants because potassium has a sharper solubility profile. This property affects how reactions proceed and how easily the salt can be rinsed away or crystallized for purification. Our own production lines use controlled temperatures and strictly monitored bromination to ensure every batch matches a stable set of specifications for 4-bromo content, sulfonation efficiency, and potassium counterion purity.
There’s nothing quite like real-world application to separate useful chemistry from everything else. For years, we’ve supplied both sodium and potassium salts of substituted benzenesulfonic acids, and the choice often comes down to nuances that only show up after upscaling reactions or running them in continuous batches. Potassium variants often dissolve more rapidly and reach equilibrium more predictably compared to sodium analogues.
Sulfonic acid groups add hydrophilicity to the aromatic ring, and by swapping in a potassium cation, the resulting salt resists caking and clumping during storage in humid conditions. Large-scale users who order in drum quantities notice the difference immediately. This property alone makes handling and weighing the solid more consistent and less prone to error or loss, especially important when operating under ISO or GMP requirements in pigment and pharmaceutical synthesis.
From our own inspection logs, potassium salts also show lower tendency toward hygroscopic behavior than their sodium cousins. This advantage translates into longer shelf life and greater assurance of batch-to-batch results — a practical outcome that directly affects both inventory management and product quality.
For the user, consistency isn’t just a buzzword: it’s about chemical lots that behave the same every time. Our typical specification for 4-Bromo-Benzenesulfonic Acid Potassium Salt includes a high level of purity and low inorganic residue, and we prioritize the same equipment and analytical methods with every run. Years spent troubleshooting alongside our customers have shown that minor contaminants can cause unexpected color shifts in dye synthesis or introduce byproducts downstream. That’s why each batch passes through strict HPLC and ion chromatography to check for trace metals and monitor sulfonic acid group integrity.
We don’t just rely on the certificates that come out of the QA lab. Many of us who work in production have spent hours checking off lists, sampling incoming raw material drums, and talking to suppliers directly when anything seems off. This hands-on approach keeps the lines running smoothly — and keeps our customers happy, whether they operate in textile dyeing, pharmaceutical research, or specialty material manufacturing.
Chemists have more than one choice when it comes to brominated benzenesulfonic compounds. We’ve worked with various salts: sodium, lithium, even organic amines, depending on specific application demands. Pure 4-Bromobenzenesulfonic Acid sometimes shows up in catalogs, but it tends to be more reactive, harder to handle, and less stable for long-term use. The potassium salt remains free-flowing even after months in sealed bags, making it more practical on the factory floor and in bench-scale synthesis.
Other sulfonic acid salts like para-toluenesulfonate or the unsubstituted benzenesulfonic acid potassium salt hold value in different scenarios. In dye intermediates work, the specific halogen — bromine in this case — injects a strong activating effect on the aromatic ring. This change enables selective coupling or bridging in multi-step syntheses. Some customers switch to the potassium salt version precisely because of fewer issues with byproduct precipitation or downstream processing when filtering out the end products.
We’re frequently asked about switching between potassium and sodium salts. The switch often boils down to solubility and isolation after reaction. Imagine filtering a slurry after adding a brominated sulfonate: potassium versions settle well and can be washed down without leaving stubborn residues behind, ticking the boxes for clean separations and easier analytic checks.
Demand for 4-Bromo-Benzenesulfonic Acid Potassium Salt comes mostly from sectors that deal with dye intermediates, special polymers, and, in rarer cases, pharmaceutical intermediates. In azo dye synthesis, many classic recipes rely on this compound to introduce a stable sulfonate group together with a bromine, which creates both a reactive handle and water solubility for the intermediate. The potassium salt formulation allows the process chemist to control pH during diazotization or coupling — something much harder to manage using the acid or sodium salt alone.
Technical uses like sulfonation agents in polymer work or additives in specialty coatings also benefit from the potassium variant. On our shop floor, we’ve scaled up custom syntheses for research groups who need a clean, single-step path to bromo-substituted building blocks. For these chemists, the need for a reliable, reproducible product outweighs marginal price differences between sodium and potassium salts. Years of experience taught us that chasing the lowest-cost version often leads to more headaches than savings.
Products like 4-Bromo-Benzenesulfonic Acid Potassium Salt respond to a grounded need: efficiency in handling, reliability in synthesis, and safety in long-term storage. We’ve handled plenty of special requests from customers with niche requirements — from drum-to-tote repackaging to double-lining bags for humidity protection in monsoon-affected regions. Requests like these shaped how we improve not just the product, but the packaging, labeling, and logistics that surround it.
Shifts in global trade have also affected demand for brominated intermediates. With tighter regulations on toxic metals and persistent organic pollutants, fine-chemical companies pay more attention to the minor details. Potassium’s larger ionic radius, combined with extremely low reactivity, helps reduce risk of unwanted reactions with other salts in mixed reactors. Our technical staff works closely with end users to optimize cleaning protocols and disposal, especially where waste regulations are strict.
Small changes, such as moving from one counterion to another, can impact downstream environmental audits and worker safety. Many end-users appreciate data from our real-world observations: potassium salts require less respiratory protection during handling and produce less fine dust in our blending rooms, compared to sodium or acid variants. Simple facts like these can become major points during safety meetings or when drafting site-specific standard operating procedures.
We’ve seen a lot over the years — from trial-scale glassware cluttered with sticky residues to unmixed drums discovered at the back of a warehouse. Lessons from each scenario add up and change how we approach both manufacturing and technical support. Chemists new to using 4-Bromo-Benzenesulfonic Acid Potassium Salt appreciate application notes or firsthand tips, not just spec sheets or regulatory numbers. For example, potassium salts store better in low-humidity conditions, and any caked material can be broken down with a rubber mallet or transferred to a fluidized bed for larger operations.
Smaller-scale users sometimes overlook how sensitive many organosulfonates are to minor impurities, say, a half-point extra on residual moisture. Our QC staff use Karl-Fischer titration instead of relying on loss-on-drying tests, as this yields more reliable figures for water content. This embeds consistency into every batch, whether it ships in laboratory glass or in 500-kg drums.
Operators running synthesis lines like to know what happens over long periods, not just in the first week. Potassium salts notoriously resist yellowing or color shifts, even after weeks exposed to warehouse conditions. For pigment applications, this characteristic means less variation in finished color tone, fewer reruns, and less scrap. Such details rarely get much play in catalogs, yet for our customers, they can be the difference between hitting technical targets or having to tweak recipes week after week.
As manufacturers, the most valuable resource we have is not just analytical reports but feedback from people who use our product on the ground. Over the past decade, we’ve worked with dye houses operating batchwise and in continuous lines, specialty chemical producers focused on tight impurity control, and R&D labs scaling up from grams to tons per year. The result is a product that reflects hundreds of small improvements — moving to anti-static liners for powder, adjusting particle size distribution, even adjusting mixing times based on actual downstream processing needs.
Each improvement comes directly from the field — like requests for finer or coarser grades, or insights gained when switching from glass-lined reactors to stainless equipment. Our technical team shares best practices, such as dissolving the salt in deionized water first to avoid microprecipitation, or specifying bespoke packaging for temperature- or moisture-sensitive shipments headed overseas.
We’ve seen firsthand how even a slight uptick in insoluble matter can force a rework, or how an easily overlooked particle size mismatch can clog lines during filtration. Lessons like these shape our own internal communication between production, quality, and logistics, ensuring the end user receives a well-prepared, reliable product every time.
It’s easy to underestimate the ripple effect a single intermediate can have on broader chemical manufacturing. Certain dye and pigment makers rely on a clean input stream of 4-Bromo-Benzenesulfonic Acid Potassium Salt to feed multi-step syntheses. For these operations, any off-spec batch delays production, raises costs, or even knocks out entire lines of downstream products.
Consistency is more than just keeping the color the same — it’s about translating lab-scale techniques into the reality of industrial machines and unpredictable storage facilities. In our own facility, batch traceability and accountability go hand-in-hand with data from packing and dispatch, making real-world experience as important as any laboratory test.
Supporting quality R&D means being available for technical consultation long after the initial shipment leaves the plant. Customers in advanced applications sometimes require modifications, such as ultra-low metal content for high-purity synthesis, or custom blending with a cosolvent. Our willingness to take on bespoke requests reflects both our expertise and our decades-long investment in staff development.
Years spent honing our manufacturing process for 4-Bromo-Benzenesulfonic Acid Potassium Salt have shown that cutting corners on raw material quality or process control never pays off. Suppliers occasionally approach us with cheaper alternatives for brominated intermediates, tempting us to trial unknown sources or accept less documentation for the sake of price. Almost always, minor savings in procurement turn into visible disruptions in production — not just for us, but for every customer down the chain.
Predictable output, safe handling, and minimal environmental impact come from setting strict parameters and holding every batch to those marks. We regularly update our analytical methods based on advances in detection, whether spotting trace halides or ensuring potassium content matches declared values. Engineering improvements sometimes follow deep dives into actual production mishaps — learning to adjust pH tolerance for specific reactors, or redesigning storage rooms to fight humidity intrusion.
For those working in high-purity fields, tracking impurity drift and understanding long-term product decomposition are just as important as price per kilogram. We provide test data from lots held in simulated warehouse conditions for extended periods to ensure that what goes out the door holds up through storage, transport, and end-use, even when conditions fall outside the ideal.
Our experience with 4-Bromo-Benzenesulfonic Acid Potassium Salt includes more than just filling orders. We’ve walked clients through switching from sodium to potassium salt, finding them faster dissolution rates and better results in critical coupling reactions. For new users, we recommend running bench tests using actual plant water and standardizing drying times, as small variations can impact both reaction times and isolated yields at scale.
Operators facing frequent humid conditions have benefited from using double-layer packing and desiccants, practices we developed specifically to keep batch consistency intact. Those less familiar with handling sulfonic acid salts sometimes overlook the importance of sealed storage and batch tracking across long supply chains. We see repeat customers stick with our product less because of price, and more because of the repeatable outcomes they gain in their own production.
For troubleshooting or scaling up to new production lines, clean solvent selection and agitation timing matter. Small improvements, like keeping solution pH in a certain range or pre-warming tanks, cut down on runtime variabilities. From our side, we keep documentation on archive, and provide guidance based on the dozens of similar projects we’ve supported over the years, ensuring that our partners get past common hurdles quickly.
Chemistry keeps evolving, and so must chemical manufacturing. Regulatory shifts and end-use applications are becoming more specialized, and high information transparency is increasingly important to our clients. Our approach means integrating real user feedback from research chemists and plant operators, and remaining vigilant for small process tweaks that yield better products.
As compound performance grows in importance for electronics, specialty polymers, pigment precursor synthesis, and analytical applications, we aim to ensure that future lots of 4-Bromo-Benzenesulfonic Acid Potassium Salt remain fit for new technologies. Our customers value responsiveness and on-the-ground knowledge as much as any technical bullet point.
We will keep pushing to improve every aspect, from the source chemicals and process safeguards, to logistics and technical guidance. The end result is a chemical product that delivers reliable results, makes life easier for users in production and lab settings, and adapts as the chemical landscape continues to change. That’s how real-world manufacturing meets modern industry demands, and why we stand behind the materials we make today and in the future.