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2,4'-Dichlorobenzophenone

    • Product Name 2,4'-Dichlorobenzophenone
    • Einecs 211-339-8
    • 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

    590993

    Chemical Name 2,4'-Dichlorobenzophenone
    Cas Number 1806-30-4
    Molecular Formula C13H8Cl2O
    Molecular Weight 251.11 g/mol
    Appearance White to off-white crystalline powder
    Melting Point 91-94 °C
    Boiling Point 381 °C
    Density 1.34 g/cm3
    Solubility In Water Insoluble
    Pubchem Cid 13357

    As an accredited 2,4'-Dichlorobenzophenone factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 100g 2,4'-Dichlorobenzophenone is securely packaged in a sealed amber glass bottle with a tamper-evident cap.
    Shipping 2,4'-Dichlorobenzophenone should be shipped in tightly sealed containers, protected from moisture and incompatible substances. During transport, classify according to regulations for hazardous chemicals. Use appropriate labels and documentation, ensuring the container is secure to prevent leaks or spills. Handle with personal protective equipment and avoid exposure to heat or direct sunlight.
    Storage 2,4'-Dichlorobenzophenone should be stored in a tightly closed container in a cool, dry, well-ventilated area, away from incompatible substances such as strong oxidizing agents. Protect from light and moisture. Ensure proper labeling and avoid storage near food or drink. Use secondary containment if needed to prevent spills and maintain safety data sheets nearby for reference.
    Application of 2,4'-Dichlorobenzophenone

    Applications of 2,4'-Dichlorobenzophenone in Industrial Manufacturing

    2,4'-Dichlorobenzophenone serves as a crucial intermediate in a limited number of advanced chemical manufacturing sectors, supporting controlled processes where stringent regulatory compliance, defined formulation ratios, and precise downstream integration drive reliable finished goods production.

    1. Pharmaceutical API Intermediate Synthesis

    This material plays a vital role as a building block in the multi-step synthesis of select active pharmaceutical ingredients (APIs), such as certain non-steroidal anti-inflammatory drugs (NSAIDs). Its incorporation supports targeted molecular modifications under strictly regulated environments, where process precision determines the efficacy and consistency of the end API. The exact introduction phase and ratio depend on the specific pathway selected by downstream pharmaceutical producers, who must adhere to rigorous compliance protocols and documented process steps to ensure consistent quality and traceability.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice (GMP) for Active Pharmaceutical Ingredients
    • United States Pharmacopeia (USP) as referenced in downstream formulations
    • European Pharmacopoeia (Ph. Eur.) prerequisites when applicable
    • FDA 21 CFR Part 211 for finished pharmaceuticals

    Typical usage ratio

    • 0.25–1.5 molar equivalents, depending on the overall reaction design and target yield. Downstream adjustment bases on target compound, reaction scale, and pathway efficiency.

    Downstream process integration

    • Introduced during the initial or intermediate condensation stages of multi-step organic synthesis.
    • Enters via controlled batch addition, with in-process QC to monitor reaction completion.
    • Subject to purification by crystallization or chromatographic techniques before further transformation.

    Final product types

    • Non-steroidal anti-inflammatory drug APIs such as ketoprofen or related compounds
    • Specialty pharmaceutical intermediates for contract manufacturing

    2. UV-Curable Coating Photoinitiator Precursor

    Downstream manufacturers use this compound as an essential precursor for the synthesis of advanced photoinitiators, which drive the polymerization of monomers in UV-curable coatings and inks. Its dichlorinated structure facilitates controlled reactivity and high conversion rates required for consistent photoinitiator performance, directly impacting the curing speed and mechanical properties of the final coatings, subject to specific safety and performance standards demanded in industrial surface protection applications.

    Industry compliance standards

    • ISO 9001:2015 Quality Management (for industrial coatings production)
    • REACH Regulation (EC) No 1907/2006, ensuring permitted substances in European market
    • RoHS Directive 2011/65/EU for applications on electrical and electronic equipment
    • ASTM D7869 (Standard Practice for Weathering of Automotive Coatings)

    Typical usage ratio

    • 7–14% by weight as a precursor in the photoinitiator synthesis step; may be tuned based on targeted photoinitiator structure and resin compatibility.

    Downstream process integration

    • Reacted with aldehydes and other reagents in batch reactors to obtain substituted benzoin derivatives.
    • Intermediate isolated then transformed into functional photoinitiator compounds.
    • Incorporated into photoinitiator masterbatches or concentrates prior to blending with coating formulations.

    Final product types

    • UV-curable coatings for automotive plastics and metal parts
    • UV-cured printing inks for packaging and label production
    • Photo-reactive adhesives for electronics assembly

    3. Agrochemical Active Ingredient Manufacturing

    This material enters downstream agrochemical synthesis as a core intermediate in the creation of selective herbicide actives, particularly within the aryloxyphenoxypropionate (AOPP) and related product classes. Its dichlorinated benzophenone framework enables functional group transformations integral to assembling the required active structure, impacting plant selectivity and application performance. Manufacturers must document the process under agrochemical regulatory standards, with each production batch subjected to end-use-specific residue and efficacy evaluation prior to market release.

    Industry compliance standards

    • FAO/WHO specifications for pesticide active ingredients
    • Regulation (EC) No 1107/2009 (EU approval of plant protection products)
    • US EPA OPPTS guidelines for active ingredient registration
    • ISO 9001:2015 and GLP (Good Laboratory Practice) in synthesis and testing

    Typical usage ratio

    • 0.9–1.2 molar equivalents, set relative to co-reactants and adjusted based on target molecule conversion rates in the early condensation or coupling stages.

    Downstream process integration

    • Input as a primary aromatic substrate for O-alkylation and further derivatization.
    • Engaged in closed-system synthesis lines equipped with residue monitoring instrumentation.
    • Purified by fractionation or recrystallization before formulation into technical concentrates.

    Final product types

    • Technical grade selective herbicide concentrates (e.g., fenoxaprop-type actives)
    • Crop protection formulation intermediates for further blending

    4. Specialty Polymer Processing Additive

    Certain polymer producers use this compound as a performance modifier and intermediate for tailored engineering plastics, where the presence of specific benzophenone structures can impact heat resistance, UV-stability, and mechanical integrity. Its integration occurs at upstream stages of resin synthesis, affecting the resultant polymer’s attributes according to documented process parameters demanded by demanding technical sectors such as automotive and electronics. Process controls and quality checks support end-use performance, following relevant international material standards.

    Industry compliance standards

    • UL 94 Flammability Standard for plastics in electrical devices
    • ISO 17855-1 (Polypropylene resins – Specification)
    • RoHS and REACH for polymer applications in EU markets
    • Customer-specific material certification (e.g., OEM automotive specifications)

    Typical usage ratio

    • 0.2–1.0% by weight on monomer feed basis, based on target property adjustment—for example, boosting UV absorption or enhancing dimensional stability.

    Downstream process integration

    • Incorporated during in-situ polymerization, commonly in condensation or ring-opening polymerization batch reactors.
    • Co-monomer or performance additive, controlled by downstream dosing systems.
    • Residue and structural analysis performed during final resin pelletization.

    Final product types

    • High-performance engineering polymer pellets and compounds
    • UV-resistant automotive plastics and housings
    • Composite materials for electronics casings
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    Certification & Compliance
    More Introduction

    2,4'-Dichlorobenzophenone: Our Experience as a Chemical Manufacturer

    A Look Into the Production and Role of 2,4'-Dichlorobenzophenone

    Working directly with 2,4'-Dichlorobenzophenone over the years, we’ve learned a few practical truths that go beyond the textbook. Our daily routine starts with clear, colorless white crystals, distinguished by their specific molecular structure, C13H8Cl2O, and known by their CAS number 90-98-2. The precision needed to maintain high purity — usually above 98% — keeps our team focused at every production stage. Every reaction, every wash, is not just chemistry, but a combination of practice, repetition, and a few lessons learned the hard way.

    We often come across questions about how this compound stands apart from its close chemical cousins. Benzophenone itself finds a spot in many labs and factories, but change the pattern of chlorine atoms, and the material shifts in both personality and practical value. With 2,4'-Dichlorobenzophenone, those positions matter. This pattern affects the product’s ability to serve as a building block for specialty polymers, advanced agrochemical intermediates, and certain pharma syntheses. Those introducing new products lean towards 2,4'-Dichlorobenzophenone specifically because it offers cleaner substitution reactions and a predictable outcome in downstream chemistry.

    Why Chemists Choose 2,4'-Dichlorobenzophenone

    Direct feedback from customers tells us that not all isomers serve the same needs. Some will ask about 2,2'- or 4,4'-dichlorobenzophenone, assuming interchangeability. In practice, that doesn’t fly. Take the physical properties: 2,4'- exhibits a distinct melting point, and its recrystallization behavior removes a headache for those who demand clean, consistent yields. Those who process at scale appreciate the lower tendency for impurities to form, which saves both time and material during purification. Cost savings here often turn up at the bottom line of entire production campaigns.

    If the world only needed standard-grade benzophenone derivatives, no one would spend the extra time and expense making 2,4' dichloro variants to these specifications. What drives industry requests stems from target molecules that only permit substitutions in these narrow positions. For many advanced polymers, these specific chlorination patterns deliver improved UV resistance, stability, and flexibility in the finished material. Researchers working on agricultural molecules consider regulatory scrutiny, so they need consistent, high-purity intermediates that trace cleanly to their source material, and that’s where our direct control over the reaction environment and purification methods delivers.

    Building Trust Through Production Experience

    Staying hands-on with production, our staff doesn’t just watch monitors; they physically sample each batch, grind crystals, run TLC, and fire up GC-MS or HPLC for every lot. Keeping the process in our own facility lets us tweak conditions when something odd emerges – maybe it’s humidity one morning, maybe a slight off-color in mother liquor. We learned years ago that solving such irregularities quickly depends on familiarity, not theory. That day-to-day know-how earns trust with customers who don’t have time for surprises.

    Scale matters. Producing a few kilos is nothing like running hundreds, let alone metric tons. Over time, we noticed many seemingly minor details – the time of addition, the quality of base, the order of solvent – prove decisive. We’ve seen other producers spoil good material at isolation, either by rushing filtration or skipping longer washes. The burn of lost product at this step sticks with you, and over time it became a habit for our lead operators to slow down and verify crystal integrity before shipment. This in-the-weeds knowledge anchors our approach to both cost control and consistency.

    The Downstream Importance of Consistency

    End users come from a wide range of specialties. One week brings inquiries from a polymer R&D team looking to tune tensile strength in new films. Another week, a pharma manufacturer wants the same lot for back-to-back active ingredient intermediate runs, requiring repeatability in chromatographic fingerprints. No batch is “typical” for these clients – minor shifts in quality can ripple out into expense and delays across the supply chain. We keep open dialogue with these partners, comparing their feedback on reactivity, solubility, and downstream reaction outcomes with our own inline data, adjusting our protocols as needed.

    No two application demands are alike, but it’s rare for our customers to accept whatever leaves the reactor. Many specify their own physical or analytical tests, right down to color, melting point, and spectral purity. Meeting these head-on, we offer not just batch data, but long-form narratives of how the material was processed, potential anomalies noted, and corrective steps taken. We found years ago this kind of openness built actual relationships. Today, we routinely get calls about non-standard requirements, and our team responds by adjusting pure solvent ratios, cycle lengths, or filtration conditions to match–so much more satisfying work than simply hitting “go” on a fixed recipe.

    Process Improvements and Problem Solving

    One major shift in recent years involved our move to semi-continuous operation for some non-critical steps. The flexibility to process either in larger flasks or controlled flow has let us cut down on batch-to-batch variability, and dramatically improved throughput during crunch seasons. Not all chemistries respond well to these changes. In the case of 2,4'-Dichlorobenzophenone, careful optimization allowed us to maintain crystal habit and solvent cleanliness even as volumes increased. That jump in production output didn’t come easy. Progress came from a lot of trial runs and a few misfires. But the result: more consistent particle size distribution and easier isolation, translating directly to fewer headaches for every downstream user.

    We value empirical feedback above theory. When recurrent problems showed up in certain polymer applications, we sent our technical managers straight to the field to observe polymerization reactions live. Adjustments to our drying and packaging approach followed. Seemingly small variables, such as trace moisture or packaging films, sometimes held the key to preventing flocculation in high-end polymer lines. Field feedback drove us to modify our standard moisture control protocols, reducing contamination and extending shelf life. These aren’t changes an outside observer might spot; they grow from the daily grind, the hundreds of small course corrections that keep our results tight.

    Pushing for Greater Traceability and Transparency

    Years ago, customers vested trust with nothing more than a Certificate of Analysis. Expectations have changed. Now, buyers want origin chain clarity, records of raw material traceability, and batch-level digital signatures. We invested early in data collection, integrating real-time monitoring all the way from raw material reception to finished good release. While others often treat traceability as a regulatory nuisance, we see it as a difference-maker. It grants our partners confidence in the origin and handling of each consignment. It also speeds up root cause analysis in the rare event of an anomaly downstream.

    The broader chemical world has moved toward real-time data logging, and those who haven’t will find clients moving quickly to suppliers who do. We view this transparency as essential, not optional, especially with so many applications placing 2,4'-Dichlorobenzophenone at early steps in synthesis routes for regulated products. Sharing production narratives, batch records, and even document scans with our partners shortens their validation processes, which in turn cement longer-term business ties for everyone involved.

    Technical Support: Going Beyond the Spec Sheet

    Questions about solubility in specific solvent blends, reaction compatibility, or color formation in formulation labs arrive nearly every week. Rather than simply referring users to generic handbooks, our chemists keep detailed logs of side studies and real-world trials on common processing routes. We’ve even shared out solvent tables recommending optimal dissolution conditions for difficult reactors, and have lent out bench quantities for pilot feasibility studies. Regular communication with technical teams on the client side lets us spot trends before they harden into wider production concerns.

    This relationship-centric approach means we’re often brought in early when application chemists face surprises: maybe an unexpected trace byproduct forms in a cyclization, or perhaps a new stabilizer is needed for shelf life. Instead of shipping a generic “suitable for industry” response, we recreate the conditions in our own test labs, replicating both the concern and a likely solution. These efforts might seem overblown for a simple intermediate, but we’ve seen time and again how this practice pays off in application reliability and partnerships.

    Safety and Environmental Measures in Practice

    As much as efficiency matters, no conversation about manufacturing 2,4'-Dichlorobenzophenone is complete without a hard look at safety and waste management. Chlorinated aromatic intermediates come with risk. Our teams work with both enclosed transfer systems and constant air monitoring. Regular training cycles stress containment procedures, spill response, and equipment maintenance. We never saw safety as a box to check; the costs of ignoring this surface immediately when even small exposures lead to environmental or human health issues.

    Waste minimization has become core to process design. During recrystallization and purification, solvent use builds up quickly. Early on, we relied on incineration or disposal, but over time, there’s more sense and savings in effective solvent recovery. By investing in distillation and phase reuse cycles, we manage to cut solvent buy-in and reduce waste output. The numbers spell it out: solvent costs dropped, and all while lowering the risk of cross-batch contamination. Compliance with regulatory regimes isn’t a cost for us; it’s insurance for every relationship we build in business and within our community.

    Comparisons: 2,4'-Dichlorobenzophenone and Its Close Relatives

    At first glance, the field of dichlorinated benzophenones can look crowded. Yet requests for 2,4'- are climbing, outpacing a handful of related compounds. The reasons get clearer after conversations with end users. Some routes favor the 4,4'- or 2,2'- isomers for certain material science projects, but the 2,4'- variant finds a sweet spot in terms of melting point, stability under light, and predictable reactivity in nucleophilic aromatic substitution reactions. These properties make it better suited for developing specialty polymers, films with high thermal resistance, and selective pharmaceutical building blocks.

    Every year, we receive requests for niche grades — low-ppm metallic impurities, tightly controlled particle distribution, or alternative recrystallization solvents. Success here depends on controlling specifics at every step, something that large distributors can’t just “spec in” after the fact. Our direct approach, handling raw materials in-house, means we capture off-grade lots quickly, learn, and adjust with minimal loss. This ability to respond at a process level keeps our materials aligned with evolving market demands, rather than hoping to fit a generic product into a specialized need.

    Application Trends and Future Directions

    Demand for high purity, controlled particle size, and reduced residual solvent levels shows no sign of slowing. As new projects appear in environmental and life science sectors, we already see 2,4'-Dichlorobenzophenone’s role broadening. A few years back, nearly all material shipped directly for polymer and coatings work. Now, pharma and agrochemical groups are requesting audit trails and process documentation to levels that would once surprise seasoned chemists. We see this trend only intensifying, with requirements for both documentation and material consistency growing sharper.

    Greater emphasis on sustainability has spurred us to review both upstream and downstream impacts. Sourcing greener raw materials, reducing waste, and switching packaging to minimize transit loss are now built into our regular workflow. At every discovery meeting, the question lingers: will new regulations shift the acceptability of certain chlorinated aromatics? We keep ahead of this, developing safer alternatives and working with partners to build out transition paths early.

    Learning from Setbacks

    No process is perfect. There have been batches that didn’t meet our standards or faced unexpected stoppages due to supply chain hiccups or equipment downtime. In those instances, we trace back root causes, correct both the hardware and the process itself, and update our documentation. Failures have taught us more than any successful run could have, ensuring that improvements become habits. Batch record reviews, staff debriefs, and rolling protocol updates beat any off-the-shelf quality manual for real impact.

    Dialogue within our team and with end users keeps us honest. Sometimes, feedback comes in the form of a polite inquiry about a “minor deviation,” which leads us down a trail resulting in a major finding. Over time, we’ve fostered a culture of critical questioning and shared learning, which serves as the backbone of our business reputation.

    Real-World Impact and the Manufacturer's Mindset

    Handling 2,4'-Dichlorobenzophenone directly, rather than through layers of intermediaries, makes all the difference for us and our partners. Control over each variable, from raw material selection through to shipping documentation, means there are no mystery origins, no guesswork about impurity profiles, no lost opportunities for improvement.

    Our long-term customers point to more than just product performance. They mention reliability, open problem-solving, and readiness to adapt — factors that aren’t listed in datasheets but matter all the same. That’s what sets the experience of working with a dedicated chemical manufacturer apart from buying off the shelf.

    Looking ahead, we see our main challenge as keeping up with new compliance requirements, global trends in safer chemistry, and client expectations for both transparency and technical support. Armed with nearly obsessive attention to detail and commitment to open dialogue, our approach to making and delivering 2,4'-Dichlorobenzophenone stands on proven ground, with plenty of room still to improve. The product’s value grows not just from what’s inside the drum, but from the story and experience built into every batch. That’s the view from the shop floor, and it’s one we carry into every kilogram we ship.