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2,5-Dimethylbenzophenone

    • Product Name 2,5-Dimethylbenzophenone
    • Alias 2,5-Dimethylbenzoylbenzene
    • Einecs 204-783-3
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    652678

    Cas Number 1888-71-7
    Molecular Formula C15H14O
    Molecular Weight 210.27
    Iupac Name 2,5-dimethylbenzophenone
    Appearance White to off-white solid
    Melting Point 58-62°C
    Boiling Point 334°C
    Density 1.059 g/cm³
    Solubility Slightly soluble in water; soluble in organic solvents
    Smiles CC1=CC(=CC=C1)C(=O)C2=CC=CC=C2
    Pubchem Cid 34374
    Refractive Index 1.588

    As an accredited 2,5-Dimethylbenzophenone factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 2,5-Dimethylbenzophenone, 25g, supplied in a tightly sealed amber glass bottle with a clear hazard label and batch information.
    Shipping 2,5-Dimethylbenzophenone is shipped in a tightly sealed container, protected from light and moisture. Transport complies with relevant chemical regulations, such as DOT or IATA, and includes proper hazard labeling. The packaging ensures the substance remains stable, and handling instructions or safety data sheets accompany the shipment to ensure safe delivery and use.
    Storage 2,5-Dimethylbenzophenone should be stored in a tightly closed container in a cool, dry, and well-ventilated area away from sources of ignition, direct sunlight, and incompatible substances such as strong oxidizing agents. Keep it away from moisture and store at room temperature. Ensure proper labeling and restrict access to trained personnel to maintain safety and prevent contamination or accidental exposure.
    Application of 2,5-Dimethylbenzophenone

    Applications of 2,5-Dimethylbenzophenone in Industrial Manufacturing

    2,5-Dimethylbenzophenone supports advanced intermediate synthesis in regulated chemical manufacturing sectors. As an actual producer, we supply this product primarily to specialty chemical formulators and regulated downstream industries where consistency, compliance, and trace traceability in process integration are required.

    1. UV Photoinitiator Synthesis for UV-Curable Coatings

    Major UV photoinitiators production lines rely on 2,5-dimethylbenzophenone as a key intermediate for the manufacture of Type I and Type II photoinitiators. Its controlled reactivity and high purity support strict performance criteria in professional UV-curing systems for electronics, automotive, and industrial coatings where end-use stability and polymerization rates are critical. Downstream clients demand traceable batch records and validated impurity profiles to meet global market entry.

    Industry compliance standards

    • ISO 9001:2015 Quality Management for production processes
    • REACH Regulation (EC No 1907/2006) for chemicals in the EU
    • FDA 21 CFR 175.300 for indirect additives used in coatings and components intended for food contact in the USA
    • RoHS Directive (2011/65/EU) for electronic device applications in the EU

    Typical usage ratio

    • 5–15% as photoinitiator precursor within specialty photoinitiator synthesis; adjusted based on desired absorption spectra and curing kinetics

    Downstream process integration

    • Reactant within the Friedel–Crafts acylation step during photoinitiator raw material preparation
    • Purified by distillation or recrystallization to meet stringent color and assay requirements before downstream esterification or amination

    Final product types

    • UV-curable coatings for electronics and plastics
    • Photoresists used in printed circuit board production
    • UV inks for industrial and packaging applications
    • 3D printing resins for additive manufacturing

    2. Pharmaceutical Intermediate for Antihistamine Synthesis

    2,5-Dimethylbenzophenone contributes as a regulated intermediate in the multistep synthesis of certain piperidine-based antihistamines. Stringent traceability and impurity control are essential when providing this compound for pharmaceutical intermediate manufacturing. Our QC protocols address both regional and international regulatory submission requirements, and batch-to-batch reproducibility is documented for DMF filings.

    Industry compliance standards

    • ICH Q7 GMP for Active Pharmaceutical Ingredients (APIs)
    • European Pharmacopoeia (Ph. Eur.) and United States Pharmacopeia (USP) for impurity testing
    • Certificate of Suitability (CEP) for supply to European drug manufacturers
    • Drug Master File (DMF) submission (US FDA)

    Typical usage ratio

    • 0.8–1.4 molar equivalents as a core intermediate, adjusted in line with synthetic route and impurity profile limits

    Downstream process integration

    • Introduced in Grignard or reductive amination steps for core pharmaceutical building block coupling
    • Purified through crystallization, followed by analytical confirmation of structure and residual solvents as per ICH guidelines

    Final product types

    • Active pharmaceutical ingredients for second-generation antihistamines
    • Pharmaceutical intermediates requiring DMF support
    • Chemical reference standards for regulated pharma synthesis

    3. High-Performance Polymer Additives Manufacturing

    Select specialty polymer sectors use 2,5-dimethylbenzophenone in the production of high-performance polymer additives, enhancing UV stability and mechanical properties of thermoplastics and elastomers. Polymer additive manufacturers require strict batch homogeneity and robust analytical documentation to maintain product certification in automotive and electrical applications.

    Industry compliance standards

    • UL 94 Flame Retardancy grading for polymers
    • EN 71-3 (Toy Safety) for plasticizers used in children’s toys (EU)
    • ASTM D2565 for weatherability of plastics in outdoor exposure
    • ISO 14001:2015 Environmental Management System within production facilities

    Typical usage ratio

    • 0.3–1.2% as UV absorber or plastic additive; range adjusted by target light stability and product formulation

    Downstream process integration

    • Dosed directly into bulk polymer melt during compounding or masterbatch production
    • Monitored for uniform distribution in extrusion and molding lines

    Final product types

    • Masterbatch concentrates for polyolefins and PVC
    • UV-stabilized automotive trim and panels
    • Plastic outdoor furniture and industrial containers
    • Insulating cable coatings

    4. Specialty Fragrance Ingredient Precursor

    Fine chemical houses manufacture fragrance ingredients using 2,5-dimethylbenzophenone as a versatile building block. Its methyl-substitution makes it suited for downstream Friedel–Crafts and oxidation steps, enabling the preparation of musky and powdery long-lasting olfactory notes. Impurity control, odor threshold verification, and reproducibility across lots are essential for downstream cosmetic acceptance.

    Industry compliance standards

    • IFRA Standards (International Fragrance Association) for raw materials and final blend safety
    • EU Cosmetics Regulation 1223/2009 regarding trace contaminants
    • GMP ISO 22716 for cosmetic ingredient manufacturing
    • Allergen management per SCCS/1459/11 (Scientific Committee on Consumer Safety, EU)

    Typical usage ratio

    • 0.4–2.0% within fragrance intermediate mixtures; optimized based on target olfactory intensity and formulation compatibility

    Downstream process integration

    • Used in aromatic ketone synthesis for perfumery bases
    • Purified and subjected to sensory evaluation, including GC-MS odor threshold analysis, before final blending

    Final product types

    • Fine fragrance bases for personal and home care products
    • Industrial fragrance compounds for detergents and cleaning agents
    • Odorants used in air fresheners and scent marketing solutions
    Free Quote

    Competitive 2,5-Dimethylbenzophenone prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    2,5-Dimethylbenzophenone: A Closer Look from Our Manufacturing Floor

    A Conversation with 2,5-Dimethylbenzophenone

    Every batch of 2,5-Dimethylbenzophenone comes off our reactors with a story told by the molecules themselves. Our team works with this compound daily, seeing it through each stage from raw material selection to the packed drum. We’ve followed its progress through every step, adjusting parameters and monitoring for purity. There’s a reason our customers come back to us—not just for a bag of chemical, but for the consistency, the predictability, and the quiet confidence that what’s inside the drum matches what the certificate says. We make 2,5-Dimethylbenzophenone as much for our own peace of mind as for your process reliability.

    What We Know About the Chemistry

    This compound starts from dimethylbenzene and benzoyl chloride, joined under controlled reaction conditions. The model number might read “2,5-DMBP-99”, but behind that stands dozens of small decisions about catalyst choice, temperature ramps, and timing. The production line for 2,5-Dimethylbenzophenone does not leave a lot to chance. Early in our manufacturing days, we learned just how small variations in regioselectivity or reaction completeness can have knock-on effects for later users. A trace impurity, perhaps tolerated in other specialty chemicals, can lead to problems in downstream synthesis. So, we focus hard on selectivity, holding each batch to a minimum purity of 99% by GC.

    We do not aim for numbers alone, but for the ways those numbers matter. A high-purity product means fewer headaches in chromatography or recrystallization for our customers. It means you can run your process longer before cleaning fouled columns. We sometimes get asked about the difference between our 2,5-Dimethylbenzophenone and a more general mixture of methyl-substituted benzophenones. Those mixtures cost less, but they don’t deliver the same repeatability. Side isomers can alter physical behavior, melting points, and reaction profiles. Labs and manufacturers who depend on true 2,5-specificity have told us the difference shows up in consistent downstream yields, cleaner spectra, and time saved.

    Real-World Workhorses: Where 2,5-Dimethylbenzophenone Fits in

    Every compound we make has a job to do. 2,5-Dimethylbenzophenone makes its case as a photoinitiator component, an intermediate in specialty synthesis, or as a reference standard in analytical methods. It finds a place in the labs of universities as much as it does in high-throughput manufacturing. In polymer chemistry, it acts as a UV absorber or a building block for tailored monomer systems. We’ve seen customers use it for custom dyes, specialty photoresists, and compounds that end up in electronic device fabrication.

    The single biggest point our customers make is about repeatability. Nobody likes to stop a campaign because of off-spec raw materials. Our process doesn’t just keep contaminants out; it also ensures that each drum or bag, month after month, carries the same melting range, the same color, the same lot-to-lot consistency. We monitor residual solvents because we’ve seen how even faint traces of chlorinated byproducts can interfere downstream. These attention-to-detail habits aren’t marketing—they’re just lessons learned when batches must match, run after run.

    Differences that Show Up Where It Matters

    Benzophenone derivatives look similar at first glance, but plant-floor chemistry rewards precision. The 2,5-dimethyl pattern delivers particular advantages in selectivity and photoreactivity, depending on where the compound is headed. In photoinitiator blends, for example, customers tell us that 2,5-dimethyl outperforms 3,4-dimethyl or other isomers in clean light absorption and transfer. It matters for polymer curing, thin film deposition, or in more specialized analytical work.

    We’ve compared in-house batches using closely related isomers and have seen firsthand how solvent compatibility and thermal stability shift. Our own laboratory uses reference-grade 2,5-Dimethylbenzophenone to check calibration curves. Product engineers favor the 2,5-linked compound for lower drift and reactivity control. That’s why our plant sticks to this configuration, investing in proper separation and purification, even when run economics suggest otherwise.

    Diving into Specifications and Handling

    We set specifications tight—GC purity above 99%, controlled limits for water, sulfated ash, and specific melting points. Each lot receives analytical backing, not out of routine, but because the smallest deviations sometimes spell trouble for applications under tight regulatory or process windows. Handling 2,5-Dimethylbenzophenone presents few surprises; it is a solid at room temperature, faintly aromatic, with a melting point in the mid-70s Celsius. Storage in a dry, shaded area maintains shelf life. We pack in double-lined polyethylene, then seal in steel drums to keep humidity at bay. Transport partners receive simple instructions, and our customers know the packaging will stand up to typical warehouse stresses.

    Over the years, we’ve sharpened our routine to limit contamination from environmental dust, because we know how troublesome even microtrace contamination can be for high-sensitivity uses. Downstream, researchers and formulators have sent us positive feedback for “pluggability”—the way our product can be measured, dosed, and added without additional steps. If you’re weighing batches for pilot or scale-up, you’ll notice reliable flow and low static, a side benefit of our drying and sieving steps. These small touches come from repeated requests and troubleshooting alongside customers, not from any external pressure. 

    Traceability and Process Transparency

    We welcome visitors—regulators, customers, or auditors. You can walk our floor and see that every kilogram can be cross-checked to source material, reactor log, and quality batch record. No mysteries about where each input comes from—just clear documentation backed by an experienced production team. In our early days, we relied on hand-written logs and memory. Now, our shop-floor digital tracking keeps every batch traceable in seconds. The effect of transparency runs both ways. Customers share unexpected results, we follow up with in-house retests, and the full feedback loop improves both sides.

    One of the key lessons we’ve picked up is the tight coupling between specification setting and process monitoring. Making a high-purity chemical consistently is not about a single “magic bullet” step but about a host of details attended to each shift: filter replacement, glassware cleaning, real-time QC spot checks. This is not a one-off show for the certificate; it’s the backbone of reliable supply. Our team carries institutional memory, so knowledge and habits persist even as people or shift rotations change. This lowers the risk of “surprise” out-of-spec events.

    Comparing with Other Benzophenones

    Questions come in about why 2,5-Dimethylbenzophenone costs a bit more than commodity benzophenones or why we focus production resources here. From our perspective, the difference in consistency matters most for applications demanding clear optical properties or reproducible photochemistry. In the lab, even tiny shifts can result in re-running experiments or troubleshooting unexplained losses. Chemically, the difference comes from the methyl group positions. These aren’t arbitrary decorations on a backbone—they shift reactivity and interaction with light, solvents, and downstream reactants.

    We also hear from formulators who tried “close enough” mixes of isomers or lower-grade material. Almost always, the feedback circles back to hidden costs: slow process, extra purification, or accidental cross-contamination. Over time, plant managers and R&D teams realize that specifying 2,5-Dimethylbenzophenone cuts troubleshooting and improves reproducibility, especially for multi-step syntheses. This is especially clear in electronics, photonics, and specialty coating lines.

    Supporting the People Behind the Chemistry

    We make investments in both plant infrastructure and people. Our team includes operators, quality analysts, maintenance, and process engineers who all play a role. Mistakes are not hidden—they are discussed, reviewed, and used to improve. Every shift runs through a quick debrief, and we keep operator suggestions alive. These conversations have led to some of the process innovations that helped us reach our current product quality. Some came up with new ways to dry the product; others championed batch-wise barcode scanning for traceability. These practical improvements have a direct impact on both product consistency and safety.

    Listening and Responding to Customer Needs

    Customer feedback matters in our business because raw material quality drives workflow downstream. Some requested granular or powdered forms for faster dissolution. We responded by adding a secondary milling step and extra sieving for better flow. Another example: an R&D customer needed a narrow melting range for a precision polymerization. We worked together to pinpoint and correct a deviation traced back to a vendor’s variation in raw dimethylbenzene. By tightening incoming raw material checks, we brought results back in line, and the customer’s synthesis rates went up.

    Other requests focused on packaging changes—smaller drums or anti-static liners. Rather than offer a “standard menu”, we try to match packaging to both customer needs and safety. Some manufacturers must meet specific regulatory or environmental requirements for storage; others look for reductions in packaging waste. By working directly with users, rather than through intermediaries, we can flex and adjust. That’s part of the advantage in dealing directly with a manufacturer committed to continuous improvement.

    Safety Starts at the Source

    Working with organics like 2,5-Dimethylbenzophenone means thinking not just about reactivity, but about handling risk. We enforce strict PPE and handling policies because complacency erodes safety margins over time. Our operators use fume extraction, keep product away from open flames, and avoid skin contact. Every container receives hazard labeling, not because regulations demand boxes to be ticked, but because safe handling is both a duty and a habit. Experience has taught us to review near-misses seriously, use root-cause analysis, and purposely engineer new safety into old steps. These culture habits carry through to our partners and customers, who rely on full disclosure about any new hazard or impurity.

    Product Applications Evolve

    We’ve supplied 2,5-Dimethylbenzophenone to sectors ranging from specialty polymers and electronics to analytical suppliers. Every year or so, a new inquiry arrives: environmental researchers seeking analytical grade for trace contaminant detection, photochemistry labs designing next-generation photoinitiators, or materials companies pushing UV resistance in new films. These conversations teach us to keep eyes open for evolving needs and emerging applications. What was once a niche-use product in photoinitiation now shows up in advanced additive manufacturing materials. We adjust our specs, testing, and production to keep up.

    Our internal R&D takes cues from these patterns. We run our own applications lab for new downstream trials. Sometimes, tests reveal where a process tweak could yield a higher purity or improved flow. We cross-check results in our customer’s context, sharing notes and even advising on potential reaction steps, purification tricks, or storage best practices that maximize 2,5-Dimethylbenzophenone’s shelf life and effectiveness.

    Environmental Considerations

    No chemical process is risk-free. We look at every production run as a potential environmental risk and have built controls to minimize emissions and waste. Solvent recovery systems capture volatile organic outflows, and we treat every waste stream to strict standards before release. Residual chemical is reclaimed wherever feasible. We talk about “green chemistry” not as a buzzword, but as a set of tasks—every percentage of recovery, each drum reused, direct savings from better filtration. Operators take pride in reducing waste and flagging opportunities to do better. We work with our supply chain to source greener raw materials where possible, balancing cost with real sustainability improvements.

    Customers, too, are asking more about environmental management. More request for solvent-free products or lower-carbon processing steps arrive every cycle. We respond honestly—explaining where we succeed and where improvements still need to be made. The road isn’t easy, but our commitment holds: minimize unnecessary process steps, recapture more at every stage, and keep environmental performance part of our daily metrics. Regulators welcome this mindset, but it also makes sense from a long-view manufacturing perspective—less waste means less cost and fewer surprises later.

    Continuous Learning in Chemical Manufacturing

    The story of 2,5-Dimethylbenzophenone, in our plant, is in constant revision. Every audit, customer conversation, and downstream feedback adapts our process. The learning curve is not a straight line—we encounter production hiccups, rising material costs, or new regulatory hoops. We make a habit of documenting every challenge and improvement, sharing what works, and teaching the next team to carry it on. The culture here resists short-cuts; nobody wants a product recall or lost customer due to neglected basics.

    This culture pays back in loyalty and stability. Customers return, knowing that the next order of 2,5-Dimethylbenzophenone will perform the same as the last. They reach out not just to buy, but to discuss trials, new uses, or tweaks to fit projects. Some have worked with our team for years, evolving specs together, testing performance in specialty applications, or troubleshooting a batch that doesn’t meet an anomalous result. The honesty in these relationships, built from open communication and shared troubleshooting, delivers value far beyond the base chemical.

    What Sets Our Product Apart

    Experience in chemical manufacturing sharpens instincts about which details count. The methods used to synthesize and purify 2,5-Dimethylbenzophenone here are the product of years of adjustment: shifting from labor-intensive crystallization to more selective distillation columns as scale grew, doubling check points in the packaging line when specifications tightened, and responding directly to analytical findings from customer feedback. We keep learning alongside our users, investing in equipment, training, and R&D not just to make a chemical, but to provide real reliability for the next project or production campaign.

    Everything about our approach, from documentation to operator training and transparency, connects to delivering peace of mind and genuine repeatability. That’s not marketing spin; it’s the habit of plant teams who care about what they deliver and the way it helps our customers create new materials, run more effective research, and achieve tighter process control. Each month, the cycle repeats—and every time, there’s a little better precision and a little more trust.