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4'-Chloro-3,4-Dihydroxybenzophenone stands out as a chlorinated derivative of benzophenone, bearing two hydroxyl groups on its aromatic frame. This compound goes by the molecular formula C13H9ClO3, revealing its arrangement of carbon, hydrogen, chlorine, and oxygen atoms. Each molecule packs a chlorinated phenyl ring directly into a benzophenone structure, which shapes its reactivity and chemical behavior. Unlike more generic benzophenone variants, the combination of chlorine and hydroxyl clusters tunes this compound’s solubility, electronic effects, and suitability for particular chemical applications. For those working in specialty chemicals, it emerges as a useful raw material, providing a starting point for more sophisticated reactions. Physical characteristics set it apart in both lab and plant settings, guiding how people choose to handle and apply this compound in practice.
In terms of physical presence, 4'-Chloro-3,4-Dihydroxybenzophenone typically shows up as a solid at typical lab temperatures. Color ranges from pale yellow to a light tan, sometimes almost beige, depending on purity and storage. This material can be handled on the benchtop in flakes, fine powders, or occasionally compressed into crystalline pellets for easier measurement. It keeps a sharp melting point, often found at 196-199°C, letting anyone working with it gauge quality and identity through basic thermal analysis. Density falls close to 1.42 g/cm³, neither too light nor too heavy, adding to its easy weighing and mixing in research work. While not soluble in water, the substance tends to mix well in organic solvents such as ethanol, acetone, or dichloromethane, set apart from some less reactive benzophenone analogues. If you spill a bit during weighing, the dust does not travel far, but smart lab practice calls for gloves and goggles.
The chemistry behind 4'-Chloro-3,4-Dihydroxybenzophenone draws interest for more than one reason. Those hydroxyls on the aromatic ring create points for hydrogen bonding, increasing the ease with which this compound interacts with other molecules in synthesis. Its benzophenone core, mixed with the drawn electron-pulling action of a chlorine atom, changes out the reactivity pattern common to the parent compound. This design supports pathway development for polymer additives, UV absorbers, or pharmaceutical intermediates. The compound’s stability under ambient conditions means shelf life stays robust, provided it lives in a sealed, dry place, away from direct sunlight or strong oxidizers. On the downside, mixing with strong bases or acids unlocks more aggressive chemical shifts, sometimes breaking down the core molecule or unzipping side groups. When exposed to heat or light, photo-reactivity does not reach the runaway levels seen in simpler benzophenones, which keeps handling risks manageable in scale-up or extended storage.
Industry tracks 4'-Chloro-3,4-Dihydroxybenzophenone under multiple aliases, with the Harmonized System (HS) Code being most often referenced as 2914.39. The material finds a home in catalogues under custom batch numbers, purity ratings, and reference spectra for easy identification. Laboratory and industrial stocks may come packaged in airtight HDPE bottles, moisture-proof pouches, or glass containers sized from a few grams up to kilogram blocks. Downstream buyers and quality assurance teams pay close attention to certification, purity (usually listed at 98% or above), and batch consistency. Crystalline, flaked, and powder forms all circulate, which shapes storage methods and dosing machinery design. No matter the geometry, this benzophenone derivative stays solid over broad handling temperatures, which lowers transportation headaches compared to less stable goods. Production batches connect back to a manifest that details synthesis route, hazard rating, contaminant screen, and recommended storage.
4'-Chloro-3,4-Dihydroxybenzophenone sits within chemical safety frameworks alongside other chlorinated aromatics. Actual harm hinges on contact time, dose, and exposure route. As a dust, it does not raise explosive risk, but breathing or swallowing crumbles asks for medical attention, especially in prolonged professional use. Direct skin or eye contact often triggers irritation rather than major wounds, yet everyone in industrial or academic labs needs to follow simple rules: wear gloves, goggles, and protective coats, and measure in ventilated areas. The Safety Data Sheet (SDS) lists it as irritating if mishandled; it lacks the acute toxicity flagged for some of its heavier chemical cousins, but long-term buildup remains discouraged. Waste disposal sticks to chemical waste channels rather than household drains. Teams in charge of plant-scale processes monitor local air quality and keep spill kits on the ready, since the compound’s aromatic backbone links it to contaminants that persist in environments. Gloves and fume hoods help cut accidental uptake, making chemical hygiene just part of the job, not a special exception.
For years, 4'-Chloro-3,4-Dihydroxybenzophenone held its own as a mid-stage intermediate in custom syntheses, especially in pharmaceuticals, specialty dyes, and advanced plastics. Researchers look at its structure with an eye for grafting or substitution, taking advantage of that benzophenone backbone and carefully placed functional groups. Companies see value in turning this raw material into unique UV blockers, cross-linkers, or targeting moieties for drug design. Since its economics tie closely to purity and batch size, manufacturers keep refining production routes to scale up output, minimize side products, and dial in maximum yield. As regulatory frameworks push out old classes of hazardous precursors, compounds like this get a fresh look for next-generation chemical design. Safety standards shift with new data, so ongoing monitoring of environmental release and workplace exposure makes a difference — both for compliance and for worker peace of mind. Chemical buyers and end-users benefit as improved characterization, smarter packaging, and responsive supplier networks allow for responsible scaling and smarter downstream application, shifting how labs and industry address raw material challenges for tomorrow’s needs.
