2-Acetyl-4-Bromophenol: Product Insight from the Source

From Our Process Line to the Formulator’s Bench

2-Acetyl-4-Bromophenol doesn’t turn many heads outside specialty chemical labs. Those who know it, though, know its value as both a building block and an active in targeted organic syntheses and advanced applications. We have put time into refining every batch at our facility, aiming to give chemists more than a raw material—offering consistency and purity that lets teams focus on what matters: their own results. Our own background in aromatic functionalization guides every run, and every lot is the result of continuous optimization.

Core Model and Specifications

As a chemical manufacturer, we regularly handle inquiries for 2-Acetyl-4-Bromophenol under its CAS 28311-87-9. Most demand a solid product, and our offering comes as an off-white to pale taupe crystalline powder. Purity by GC or HPLC typically exceeds 99%. Residual solvents run extremely low because we use neutral-pressure crystallization, limiting trapped impurities. Moisture content stays under 0.5%, confirmed by up-to-date Karl Fischer titration on each lot. We pack every order under nitrogen. For those with scaling projects or needs for greater throughput, we also support kilogram and multi-ton scale production; QC specifications stay tight at any batch size.

We follow established ICH guidelines for impurity profiles and pharmaceuticals work but deliver rapid COA turnaround to fragrance, agrochemical, or resins clients who just want solid, repeatable performance. Our labs confirm melting points in the standard 81–84°C range, and density checks reach 1.5 g/cm³. You won’t find stuck crystal growth or unpredictable powders in our drums. Where clients require a finer granulometry for faster dissolution or easier blending in solvent-based systems, we accommodate with custom milling and sieving.

Experiences from the Plant: Meeting Technical Demands Head-On

Producing 2-Acetyl-4-Bromophenol centers on a two-stage process: mono-bromination at the para position, then Friedel–Crafts acylation. Both present their share of headaches. Mismanaged bromine feeds, poor thermal control, or impure precursors create mixed isomers and unwanted byproducts—costly for downstream users. We watch each variable inside our automated reactors, using in-situ IR and GC tracking so every batch remains inside target window. In practice, this saves R&D labs endless time filtering out side-products, especially when downstream applications won’t tolerate chromatographic “cleanup.”

We have worked with formulators who needed guaranteed halide and ketone purity above the quoted 99%, requesting custom impurity specs for FDA drug master file compliance. Our QC workflow, from every incoming raw material inspection to finished product NMR, supports these needs. If challenges surface—such as residual iron pickup from reactor walls—we address it directly, sometimes introducing additional chelation or switching glass-lined reactors for critical lots. We want buyers to trust that what we produce today matches yesterday’s performance.

Applications across Industries: Making Connections

Some buyers know 2-Acetyl-4-Bromophenol as a bridge molecule, linking aromatic chemistry to more complex constructs. Others use it as a performance driver in flavor and fragrance, functional resins, and pharma intermediates. Every application values different aspects of this molecule.

Our own customers in custom fragrance compounding often chase the smoky, earthy, or faintly phenolic note that 2-Acetyl-4-Bromophenol imparts in functional samples. Even low addition levels, in the single-digit ppm range, influence accords in ways other substituted acetylphenols can’t reproduce. There’s a reason for this: the presence of a bromine at the 4-position subtly shifts volatility and impacts top and middle note displacement, allowing perfumers to fine tune the olfactory profile. Compounds without the bromo group lack the same persistence or aura.

Researchers in pharmaceutical R&D value a different property. The electron-withdrawing effect of the acetyl and bromine substituents together activate the phenol ring for cross-coupling, condensation, and further functionalization. Studies published in peer-reviewed synthesis journals point out that the unique reactivity of this molecule opens doors to more elaborate motifs, including anti-inflammatory candidate compounds and other drug leads. Some use it as a protected phenol starting point for Suzuki or Buchwald–Hartwig couplings, aiming for quick access to biaryls or heterocycle-bridged substances.

Those making high-performance polymers and advanced coatings count on reliable halogen content and manageable melting behavior. Once, a client produced next-generation polyaryletherketones, selecting our grade for its clean conversion and absence of trace metals, which had poisoned their catalysis in pilot runs with competitor material. In resin chemistry, such field performance beats any theoretical advantage—people simply want their catalyst to do its job without mysterious interruptions.

Comparisons: 2-Acetyl-4-Bromophenol and Its Siblings

It pays to compare this molecule with its close relatives. A chemist may ask: why go to the trouble of incorporating a bromo-acetylphenol, when options like 2-Acetylphenol or 4-Bromophenol might appear cheaper or more readily available? In real practice, 2-Acetyl-4-Bromophenol combines key benefits neither precursor offers alone. The unique substitution pattern changes reactivity, solubility, and final product properties.

Compared to 2-Acetylphenol without halogenation, our product holds up better under more forcing cross-coupling conditions and produces less polymeric tar during scale reactions. Its reactivity profile stands apart from pure phenols, unlocking new ways to bridge rings or install further substituents. Meanwhile, 4-Bromophenol lacks the ketone structure that enables specific linking reactions or the characteristic odor profile that matters to fragrance houses. We’ve tested both, and from experience, only the bromoacetyl species gives the full functionality needed for demanding synthesis.

Many manufacturers supply generic bromo-substituted or acetyl-substituted aromatics. It takes detailed control to guarantee substitution occurs only at the 2-acetyl, 4-bromo (para) positions, with minimal contamination from isomeric or polysubstituted side products. Inferior materials can contain up to several percent of other isomers or have off-odors and inconsistent physical properties, which wreak havoc in scaling or regulatory submissions. Because we run dedicated process lines and practice tight, end-to-end traceability, we eliminate most variables leading to inconsistency.

Real-World Issues and our Solutions

In actual duty, 2-Acetyl-4-Bromophenol presents a few practical challenges—ones that chemical companies like ours have learned to address head-on. Moisture pick-up can threaten some applications, especially where nucleophilicity matters. Because our plant sits in a humid region, we’ve implemented extra steps for rapid packaging and nitrogen blanketing, reducing risk. Many clients previously faced problems from caked powders or slow-wetting crystals. Feedback pushed us to optimize drying and handling from the process filter all the way to the filling station. Texture and flow can seem like mundane details, but in automated feed or batch reactors, they make the difference between a stoppage and an efficient shift.

Long-distance transport has its own risks. Early on, we learned that air freight can promote sublimation or discoloration if not tightly packaged. Now, every drum uses a multi-layer barrier, and our own short-term stability studies support shipment to the Americas and the EU. Our logistics teams watch port conditions, especially in peak hot or rainy months. We hold inventory at two locations to support rapid fulfillment—backed by on-file batch reserves for samples, re-testing, and claims support.

Disposal and environmental handling concern us, too, particularly based on customer feedback and periodic audits. Halogenated aromatics can be tricky in wastewater—many downstream users appreciate our technical support with effluent management, and we provide material compatibility advice for incinerators. By choosing bromination protocols that minimize excess byproducts and introducing in-house waste vapor scrubbing, we have cut downstream halogen burden for those partners who value environmental compliance.

Our team also supports customers with regulatory documents and traceability certificates. Whether the product enters a pharmaceutical, cosmetic, or industrial supply chain, traceable production records and responsive technical documentation mean less project downtime. Regulatory scrutiny has only increased over the years—especially for those exporting worldwide. By meeting these documentation needs upfront, we help projects stay on track.

Why Our Production Perspective Matters

Market chatter often fixates on finished product pricing or purity stats. But those numbers don’t tell the full story—the assurance that every lot will meet demanding specs, or the perspective to rapidly scale orders up or down, only comes from direct manufacturing experience. Because we run our own process, we respond to customer requests and process improvements that a trading company might miss or delay. Rapid response to shifting ingredient sources or global supply issues, for instance, has allowed us to maintain output for customers through turbulent shipping cycles.

Input choice at the molecular level shapes everything—from impurity profiles to handling properties and application suitability. Our engineering teams study each step, from bromination reactor kinetics to solvent washdowns; this vigilance lets research and production teams focus on innovation. Customers facing process upsets or mystery contaminants often send us their production samples for joint problem-solving. We don’t mind—technical support only strengthens both sides. Over the years, these customer interactions have led us to tweak our drying, change our packing routines, and revisit material compatibility for both pharma and industrial clients.

Working on the factory floor makes it clear: simplicity and repeatability matter. Uniform melting range, tightly defined particle size, and documented impurity limits all translate to fewer surprises in your lab. Achieving these standards comes through hands-on process engineering and feedback from dozens of users, not just through theoretical spec listings. Our investment goes into both process control and team training—it’s a mindset, not just a checklist item.

Sharing Lessons Learned: From Bench to Bulk

Working directly with chemical users as a manufacturer, we hear a range of requests and concerns. A fragrance customer found previous sources left a persistent metallic trace that interfered at sub-ppm levels. A resin developer learned the hard way that off-cut side-product crystals cut catalytic performance by a third. A pharmaceutical researcher delayed a project by months while backtracking contamination origins. These everyday lessons show how field performance closely tracks production discipline.

We have kept our process lines open to feedback from researchers and production buyers alike. Special packaging, milled grades for rapid dissolution, and certificates for new markets all have roots in real-world demands, not theory. Batch-to-batch reproducibility shapes the confidence major brand labs have in us as a go-to source. Direct collaboration with clients helps us address emerging needs, whether for new documentation, compliance with updated REACH rules, or bulk orders delivered on a tight schedule.

Belief in the Power of Production

After years making 2-Acetyl-4-Bromophenol, we know every bottleneck and shortcut in its synthesis. Transparency, hands-on controls, and active customer dialogue bridge the gap between best case and real field results. As regulatory and performance bars rise, the humble bromoacetylphenol finds new uses in specialty applications, and the story of its manufacture matters as much as any line of data. The commitment to doing things right—tight controls, ongoing feedback, and readiness to help—drives our ongoing journey with each lot that leaves our plant floor.