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3,4-Dimethoxybenzophenone

    • Product Name 3,4-Dimethoxybenzophenone
    • Alias 3,4-Dimethoxybenzoic acid phenyl ester
    • Einecs 205-129-8
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry sales7@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    860456

    Chemical Name 3,4-Dimethoxybenzophenone
    Cas Number 3795-53-1
    Molecular Formula C15H14O3
    Molecular Weight 242.27 g/mol
    Appearance White to off-white crystalline powder
    Melting Point 126-129°C
    Boiling Point 402.8°C at 760 mmHg
    Density 1.17 g/cm3
    Solubility Slightly soluble in water; soluble in organic solvents like ethanol and acetone
    Flash Point 197.5°C
    Pubchem Cid 73209

    As an accredited 3,4-Dimethoxybenzophenone factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 100-gram 3,4-Dimethoxybenzophenone is packaged in a sealed, amber glass bottle with a secure, tamper-evident cap.
    Shipping 3,4-Dimethoxybenzophenone is shipped in tightly sealed containers to prevent moisture and contamination. It should be stored in a cool, dry, well-ventilated area, away from incompatible substances. Appropriate hazard labels and documentation are included, complying with transport regulations for chemicals. Handle with standard laboratory safety precautions during receipt and storage.
    Storage Store 3,4-Dimethoxybenzophenone in a tightly sealed container, protected from light and moisture. Keep it in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizing agents. Label the container clearly and use secondary containment if needed. Observe standard laboratory safety practices, including appropriate personal protective equipment (PPE) and dedicated chemical storage cabinets when possible.
    Application of 3,4-Dimethoxybenzophenone

    Applications of 3,4-Dimethoxybenzophenone in Industrial Manufacturing

    3,4-Dimethoxybenzophenone supports key synthesis and formulation processes in fine chemical, polymer, and specialty material industries. As an established aromatic ketone intermediate, it enables precise performance characteristics demanded by various high-value manufacturing sectors.

    1. UV Absorber Additive for Engineering Plastics

    Polymer compounders use 3,4-Dimethoxybenzophenone as a UV absorber to prevent photo-degradation in engineering plastics, such as polycarbonates, polyesters, and styrenics. The compound efficiently screens UV radiation, extending material service life in outdoor and light-exposed environments, while maintaining color stability and mechanical properties. Technical formulation targets comply with global plastics additive standards and optimize performance through resin-specific masterbatch recipes.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006
    • RoHS Directive 2011/65/EU (for electric and electronic applications)
    • ISO 4892 Plastics — Methods of Exposure to Laboratory Light Sources
    • GB/T 20123-2006 (China National Standard for Plastic Additives)

    Typical usage ratio

    • 0.1–1.2 wt% based on polymer resin
    • Adjustment depends on target migration resistance and substrate photo-resistance

    Downstream process integration

    • Dry blending or melt compounding during extrusion or injection molding
    • Incorporation with other stabilizers in pre-dispersion or masterbatch

    Final product types

    • Automotive lighting housings
    • Outdoor signage panels
    • Translucent consumer electronic parts
    • Sheet and film protective layers

    2. Intermediate in Pharmaceutical Synthesis

    Custom and contract API manufacturers utilize 3,4-Dimethoxybenzophenone as a crucial building block in multi-step synthesis of active pharmaceutical ingredients. Its diaryl ketone structure participates in regioselective Grignard reactions, reductive aminations, or Friedel–Crafts acylations. Process chemists select this intermediate for APIs with methoxy-functionalized benzophenone cores, where purity and reproducibility affect downstream critical quality attributes.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • USP-NF General Chapters <1078> Impurities in APIs
    • 21 CFR Part 211 Current Good Manufacturing Practice (cGMP) for finished pharmaceuticals
    • Chinese Pharmacopoeia (ChP, CP) for API process quality

    Typical usage ratio

    • Stoichiometric quantity as dictated by multi-stage reaction route
    • Molar ratio determined by overall yield and impurity profile requirements

    Downstream process integration

    • Batch-wise introduction at core intermediate formation step
    • Monitored by HPLC and LC-MS for tracking conversion and by-products

    Final product types

    • Non-steroidal anti-inflammatory drug intermediates
    • Synthetic estrogen derivatives
    • Specialty benzophenone-structured APIs
    • Precursor-functionalized starting materials for advanced synthesis

    3. Photosensitizer for UV-Curable Coatings

    Industrial formulators apply 3,4-Dimethoxybenzophenone as a photosensitizer in UV-curable overprint varnishes and protective coatings for plastics, wood, and paper substrates. Its efficient triplet energy transfer enables rapid crosslinking within acrylate or epoxy matrices under medium-pressure mercury lamp exposure. Tailored incorporation improves process speed, surface hardness, and mar resistance in mass production environments, while controlling migration and final film properties.

    Industry compliance standards

    • ISO 28219 UV Technology Safety Standard
    • EU Regulation (EC) No 1935/2004 on materials intended for food contact (for indirect food packaging coatings)
    • FDA 21 CFR 175.300 for resinous and polymeric coatings (for US market)
    • ASTM D3023-13 for organic coatings—curing and adhesion tests

    Typical usage ratio

    • 0.5–2.5 parts per hundred resin (phr), optimized for layer thickness and cure speed
    • Reduced loading in formulations with high reactivity oligomers

    Downstream process integration

    • Added during prepolymer or oligomer blend preparation
    • Fine-tuned for viscosity and cure uniformity before UV application

    Final product types

    • Overprint varnishes for brochures and labels
    • Protective coatings for floor panels
    • Inkjet ink receivers
    • Plastic parts finishes with abrasion resistance

    4. Intermediate for Liquid Crystal Material Production

    Manufacturers of high-performance liquid crystal (LC) materials use 3,4-Dimethoxybenzophenone in the synthesis of aromatic core structures for advanced mesogenic molecules. The compound offers a stable ketone scaffold for further etherification, esterification, and halogenation steps. Its chemical integrity ensures reproducible phase transition behavior needed for LC display and device segment production, where reliability across temperature and field gradients is critical.

    Industry compliance standards

    • ISO 9001 QMS for specialty chemical production
    • RoHS and REACH compliance for display supply chain qualification
    • IEC 61249-2-41 for electronic base materials
    • JIS C 61209 (Japan Industrial Standard for displays)

    Typical usage ratio

    • Customized to synthetic route, typically 1 molar equivalent per targeted core (varies based on final LC mixture design)
    • Process-limited by target mesogen purity and yield

    Downstream process integration

    • Input for nucleophilic substitution or condensation stage during LC core synthesis
    • Processed under inert atmosphere to avoid side-reactions

    Final product types

    • Twisted nematic (TN) LC compounds
    • Vertical alignment (VA) and IPS LC host fluids
    • Reactive mesogen-based alignment layers
    • Specialty LC dyes and display precursors

    5. Synthesis of Agrochemical Active Ingredients

    Agrochemical R&D teams and fine synthesis producers deploy 3,4-Dimethoxybenzophenone for assembling key scaffolds in the development of selective herbicides and fungicides. It introduces specific methoxy functionalities needed for biological activity and metabolic stability. The intermediate participates in stepwise alkylation, halogenation, or esterification reactions, producing actives that meet regional residue and toxicology compliance benchmarks for crop safety and export approval.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • OECD Guideline 106 (Soil Degradation Studies for pesticides)
    • US EPA 40 CFR Parts 150–189 (registration of pesticides and agrochemicals)
    • GB 4819-2017 (China pesticide technical material standard)

    Typical usage ratio

    • Applied as exact molar equivalent for active ingredient synthesis according to route yield and pre-formulation steps
    • Adjusted for process scale and downstream purification needs

    Downstream process integration

    • Charged during coupling, acylation, or cyclization in intermediate active synthesis
    • Followed by controlled crystallization or liquid-liquid extraction for purity

    Final product types

    • Selective triazole-based fungicides
    • Novel benzophenone-herbicide analogues
    • Seed treatment actives
    • Pre-emergent herbicide technical concentrates

    6. Photo-Initiator for Specialty Adhesives

    Adhesive formulators in electronics and medical device bundling use 3,4-Dimethoxybenzophenone as a co-initiator in UV-cured systems. Its absorption matches custom light sources to initiate rapid surface polymerization, offering high adhesion and short cure times for sensitive or low-temperature substrates. Technical design addresses requirements for migration control and cross-link layering without compromising transparency or application viscosity.

    Industry compliance standards

    • ISO 10993-5 for cytotoxicity (for medical adhesives)
    • IEC 61215 for photovoltaic module encapsulant adhesives
    • EU Directive 2011/65/EU (RoHS) for electronics use
    • ASTM C881 for adhesive bonding to concrete (industrial applications)

    Typical usage ratio

    • 0.3–1.5 phr depending on desired surface and depth cure properties
    • Adjusted in combination with photoinitiator blends and resin system

    Downstream process integration

    • Pre-mixed with monomer/oligomer blends prior to packaging
    • Monitored under in-line UV lab testing for cure validation before large scale filling

    Final product types

    • UV-cured medical device adhesives
    • Optical fiber bonding gels
    • LED mounting adhesives
    • Microelectronic assembly glues
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    Certification & Compliance
    More Introduction

    3,4-Dimethoxybenzophenone: Quality Matters in Fine Chemical Manufacturing

    Getting to Know 3,4-Dimethoxybenzophenone

    In the world of specialty chemicals, 3,4-Dimethoxybenzophenone grabs attention for good reason. It plays an important role in producing various intermediates, especially for pharmaceutical and agrochemical synthesis. At the manufacturing level, we immerse ourselves in understanding how each batch turns out so dependable—consistency in purity, batch after batch, does not happen by accident. Careful raw material sourcing, strict temperature controls, and a persistent eye on reaction times ensure every kilogram meets repeat specifications.

    Engineers in our plant know that C15H14O3 (the molecular formula) represents more than a formula on paper. It translates to decisions on reactor material, solvent recovery choices, energy input, and byproduct handling. The melting point and solubility influence not only how we store or ship the bulk powder, but also affect downstream reactions our customers care about. An experienced operator knows right away if a lot gives off an unexpected odor or shows a color shift; we inspect, adjust, and document, caring as much as any chemist at an R&D bench.

    Real-World Applications: Beyond the Lab Shelf

    Those who work downstream expect a performance they can rely on. 3,4-Dimethoxybenzophenone provides a robust backbone for more elaborate molecules. In pharmaceuticals, it paves the way toward complex heterocycles and substituted aromatics. In UV-curable coatings, its chemical structure helps deliver protection and durability. It also helps shape the profile of certain fragrances and dyes—sometimes the difference between an average and a winning product. We see both bulk orders destined for contract manufacturing organizations and smaller customized batches going to research labs, and each use case points to different purity and homolog content settings.

    Putting together a batch for an API intermediate carries different needs than a shipment intended for agrochemical formulations. Certain customers specify finer particle cuts, lumpy crystallization, or solvent-free lots, which means process tweaks, tailored washing steps, and often deeper engagement with the Q&A team. Anything less risks delays in their plant or a failed synthesis—costs much greater than adjusting a filtration step upstream.

    Why Purity and Characterization are No Small Matters

    Everyone understands the frustration caused by a failed reaction. Impurities at even low levels wreak havoc in catalyzed couplings or protect group strategies common in synthetic organic chemistry. As a manufacturer, we spend considerable resources keeping the purity of 3,4-Dimethoxybenzophenone up to requested standards, often above 99%. The process starts right from verifying the starting phenol and benzoyl chloride, running them through GC, NMR, and sometimes even HPLC analyses, even before the main synthesis steps. Success in scaling up depends as much on clean glassware and robust drying protocols as on lab-scale reaction optimization.

    We have seen differences in trace metals or solvent inclusion impact shelf-life and, in rare cases, formation of off-odors. For clients running continuous processes, a small inconsistency ripples through yield losses or, worse, hard-to-detect side-product formation. In our experience, rigorous lot traceability, test certificates, and regular staff training underpin the reliability that customers return for. Skimping on a quality assurance step never pays off.

    Comparing with Other Benzophenone Derivatives

    Benzophenone chemistry offers a wide menu of derivatives—some differ by a simple methyl or methoxy group, but their behaviors vary widely. The 3,4-dimethoxy substitution makes a difference in reactivity and solubility in specific organic solvents. Its electron-rich aromatic rings favor certain Friedel-Crafts reactions and oxidative cross-couplings, lowering the energy barriers for forming more complex molecules.

    Compared to lower-methoxy derivatives, this compound more readily undergoes ortho-directed lithiation or substitution, which can speed up the synthesis of advanced intermediates. 3,4-Dimethoxybenzophenone has a modest melting point and manageable hygroscopic behavior relative to some of its highly substituted cousins, which helps for weighing out or transferring on busy production lines. Practically, the main difference we see as manufacturers comes up in how easily the product recrystallizes, how fast it filters, and the strength of UV absorbance in solution—a useful feature for those applying it in light-sensitive systems.

    In contrast, the parent benzophenone, lacking methoxy groups, does not deliver the same performance for those working toward specific functional group compatibility or photostabilizer capacity. Each structural tweak nudges solubility, melting point, volatility, and toxicity. Customers sometimes jump to higher methoxy analogs expecting better solubility, only to find increased byproduct risks or storage headaches. We try to keep the conversation grounded in actual plant data, not just theoretical advantages.

    Production: More Than a Reaction Equation

    A manufacturer’s perspective does not get lost staring at chemical equations. The real art comes during scale-up, where a lab’s neat 20-gram reaction becomes a multi-hundred kilogram campaign. Uneven heating or cooling in reactors can mean incomplete conversion or unwanted byproducts. Our operators watch distillation columns, monitor pH, and adapt water washing steps built from batch observations, not just protocol sheets. Maintaining consistency in stoichiometry, and keeping side reactions in check, demands eyes-on vigilance—automated sensors help, but someone still tastes the difference, figuratively speaking.

    Environmental factors enter the equation. We manage solvent recovery and effluent so that we not only meet regulations, but maintain a responsible plant footprint. At scale, a few percent extra yield, or reduction in impurity, saves tons of raw material and thousands of liters of solvents each year. These savings show up for our clients in lower costs and more secure delivery timelines. Freight precautions—minimizing caking, shielding from moisture, and using robust bulk containers—matter because handling this product in a real factory sometimes means forklifts, open hoppers, or high humidity. We have seen what happens when packaging fails or a drum sits too long waiting for transfer. Attention to such details keeps the supply chain smooth.

    Regulatory, Safety, and Traceability Concerns

    3,4-Dimethoxybenzophenone occupies a tight regulatory space. Large multinational buyers care about full traceability, REACH registration, and proof that every lot stays free from restricted impurities. Country-of-origin requirements, customs documentation, and environmental impact controls follow along. On our side, maintaining robust test records, supplier audits, and periodical revalidation of analytical procedures form the backbone of compliant manufacturing. Certification does not stop at paper—inspectors arrive on site, look at logs, and walk the production floor.

    From a safety standpoint, this compound does not pose extraordinary hazards, but dust exposure, handling in powder form, and storage require clear procedures. Housekeeping matters so as not to accumulate combustible dust. Loading teams wear shields, gloves, and antistatic gear to guard against spills or inhalation risk. Emergency protocols get reviewed and refreshed; a single incident can reshape both policy and layout on the production line. Getting safety right is always ongoing work—no shortcuts tolerated.

    Working with Customizations and Setting Standards

    Clients often approach us with specialized requirements. Some ask for extra drying—reducing moisture content closer to zero—while others need custom micronized grades. The tension sits between maintaining a scale-efficient process and adapting for niche demands. A dedicated R&D and pilot plant team tests requests, judges the technical complexity, and communicates what tweaks force a major overhaul versus a reasonable process extension. Each customization loops in QA, logistics, and where necessary, process safety experts, to forecast downstream changes.

    We do not believe in one-size-fits-all. The pharmaceutical sector weights elemental purity above most other factors, running repeated batches with demanding documentation. Other industries, such as specialty polymers, focus on bulk shipment efficiency and how easily the material feeds into reactors or melts. Our colleagues in perfumery pay sharp attention to trace aromatic impurities that might cloud finished scent compositions. Each segment shapes our response whether at the specification level, analytical routine, or delivery lead time.

    Global Supply Chains and Meeting Market Needs

    Diverse global clients expect timely, economic, and reliable supplies. We manage production schedules with careful buffer inventories, track seasonal raw material price swings, and maintain alternative supplier relationships. Shipping timelines depend on the right paperwork—no regulatory snarl or shipping hold ever helped a customer. Real-world experience means managing surges in demand or sudden border delays, not just steady-state planning.

    Where some regions call for smaller, air-shippable drums, other buyers request high-volume containerized deliveries, pushing us to balance cost, shelf-life, and bulk stability. During periods of global supply chain disruption, transparent communication counts—we tell clients what’s possible, flag delays early, and keep alternative solutions ready. Adjusting batch sizes or expediting third-party testing can keep projects on track, but only if honesty and flexibility are guiding habits inside the organization.

    The Role of Feedback in Real Improvement

    Feedback shapes us. Direct complaints about particle clumping, off-odors, or shipment damage spark reviews of production and packing standards. Satisfied clients sometimes say little, but negative feedback travels fast. Bringing these lessons back to production teams leads to new sieve mesh, packaging changes, and a coordinated effort among plant, QA, and logistics staff. Owners and technicians often meet incoming client audits armed with feedback summaries that lead to real investment decisions.

    Sometimes we send technical staff on site at the client’s plant, not just for new business but to see how our product works or falls short in actual use. Seeing a batch run in a real system beats any lab analysis for practical insight. This close loop enhances specifications, inspires production tweaks, and develops new grades geared to what actually wins in the field.

    Advancing Technology: Pushing Beyond Current Norms

    Manufacturing 3,4-Dimethoxybenzophenone today means knowing history and looking forward. Automation, digital batch tracking, and real-time analytical monitoring raise reliability. Our teams follow green chemistry trends, evaluating catalysts and renewable solvents, seeking ways to reduce waste and improve atom economy across the process. Every improvement we implement, from solvent recycling loops to better energy recovery, reflects not just economic sense, but a practical response to evolving environmental expectations.

    We do not shy from complexity. Making reliable batches, with competitive lead times and exacting specs, brings satisfaction. Focusing on incremental improvement, we welcome tough questions from users who see gaps. Whether customers care about UV performance, purity thresholds, or crystal flow, we ask, test, and modify where the science points us. Unique challenges brought by client formulations have even inspired us to co-develop entirely new production steps and analytical checks. That is how a specialty chemical like 3,4-Dimethoxybenzophenone remains a reliable, go-to intermediate for so many sectors.

    Looking Ahead in Specialty Chemical Manufacturing

    Markets and requirements keep shifting. The story of 3,4-Dimethoxybenzophenone mirrors how specialty chemical manufacturing works at its best. Each kilo reflects continuous improvements, from quality planning and regulatory diligence to energy-efficient scale-up and actual feedback from those buying and using the material. We keep focus on reliability—formulations rise and fall on the back of genuine manufacturing discipline.

    In summary, producing and supplying this compound draws on decades of technical skill, flexible plant operations, and a pragmatic approach to problem-solving—qualities that outlast changes in fashion, downstream applications, or global trade conditions. Product trust gets built every day on the factory floor, in the QC lab, and during each shipment that finally arrives as promised.