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HS Code |
890913 |
| Chemical Name | 4-Benzoylbiphenyl |
| Cas Number | 2128-93-0 |
| Molecular Formula | C19H14O |
| Molar Mass | 258.32 g/mol |
| Appearance | White to off-white crystalline powder |
| Melting Point | 125-129 °C |
| Boiling Point | 464.2 °C at 760 mmHg |
| Density | 1.14 g/cm3 |
| Solubility In Water | Insoluble |
| Synonyms | p-Benzoylbiphenyl, 4-Phenylbenzophenone |
| Smiles | C1=CC=C(C=C1)C(=O)C2=CC=C(C=C2)C3=CC=CC=C3 |
| Inchi | InChI=1S/C19H14O/c20-19(15-9-5-2-10-16-15)18-14-8-7-13-17(18)12-6-1-3-11-13/h1-14H |
| Refractive Index | 1.663 |
| Storage Conditions | Store at room temperature, keep container tightly closed |
As an accredited 4-Benzoylbiphenyl factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The 25g 4-Benzoylbiphenyl comes in an amber glass bottle with a secure cap and detailed hazard and product labeling. |
| Shipping | 4-Benzoylbiphenyl is shipped in compliance with relevant regulations, securely packaged in airtight, chemical-resistant containers to prevent leaks or contamination. Proper labeling, including hazard identification, is ensured. The shipment is protected from direct sunlight, heat, and moisture, and accompanied by a Safety Data Sheet (SDS) for safe transport and handling. |
| Storage | 4-Benzoylbiphenyl should be stored in a tightly sealed container, protected from light and moisture, and kept in a cool, dry, and well-ventilated area. Avoid exposure to heat, open flames, and incompatible materials such as strong oxidizing agents. Store it in a designated chemical storage area, away from food and incompatible substances, and ensure appropriate labeling and handling procedures are followed. |
Applications of 4-Benzoylbiphenyl in Industrial ManufacturingAs a direct manufacturer of 4-Benzoylbiphenyl, we support multiple advanced industrial sectors through consistent supply and technical collaboration. Our focus remains on proven application tracks, ensuring compliance, reproducibility, and integration efficiency in every batch. 1. Liquid Crystal Intermediate for Display Technology4-Benzoylbiphenyl serves as a high-purity intermediate for synthesizing advanced liquid crystal materials. Its rigid molecular structure enhances mesogenic properties, directly impacting phase transition temperatures and alignment in liquid crystal mixtures. Leading panel manufacturers rely on its consistent quality to achieve precise electro-optical performance in TFT-LCDs and OLEDs for industrial and consumer displays. Industry compliance standards
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2. Photoinitiator Synthesis for UV-Curing CoatingsManufacturers use 4-Benzoylbiphenyl as a precursor in the synthesis of photoinitiators for UV-curable resins. Its conjugated aromatic structure optimizes UV absorption at specific wavelengths, increasing curing speed and depth control in industrial and packaging coatings. The raw material’s consistency ensures batch reproducibility in photoinitiator performance. Industry compliance standards
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3. High-Performance Polymer AdditiveProducers of specialty engineering plastics add 4-Benzoylbiphenyl as a chain modifier to increase rigidity and thermal stability in polymers such as polyesters and polycarbonates. Its molecular characteristics enable fine-tuning of glass transition temperatures and mechanical properties, supporting demanding application environments in electronics and automotive parts. Industry compliance standards
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4. Organic Synthesis Intermediate in Pharmaceutical DevelopmentPharmaceutical R&D facilities utilize 4-Benzoylbiphenyl as an advanced intermediate in the synthesis of anti-inflammatory and other bioactive compounds. Its reactivity allows specific substitution and coupling reactions, critical in producing target molecules for clinical research or pilot-scale active pharmaceutical ingredient (API) development. Reliable traceability and impurity control are strictly required throughout the supply chain. Industry compliance standards
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5. Specialty Dye and Pigment SynthesisChemical processors employ 4-Benzoylbiphenyl as an intermediate to introduce specific aromatic substituents in high-purity dyes and performance pigments. Its function in the condensation or acylation stage directly influences hue, fastness, and compatibility in downstream applications such as fiber coloring and high-grade printing inks. Consistent impurity profile is essential to avoid coloration defects and maintain reproducibility. Industry compliance standards
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6. Optical Material Monomer for Advanced PolymersProducers of specialty optical polymers use 4-Benzoylbiphenyl as a functional monomer for improving refractive index and heat distortion resistance. Its integration supports high-clarity, durable polymeric materials in lenses, fiber optics, and imaging systems, where material traceability and batch-to-batch consistency directly impact downstream optical quality performance standards. Industry compliance standards
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Over the years in chemical manufacturing, we have seen raw material quality and reliability drive real downstream results. 4-Benzoylbiphenyl (CAS: 2128-93-0, C19H14O) is a compound our team has been producing for years, drawing on genuine production expertise and scrutiny of batch repeatability. With a melting point around 119-123°C and a molecular weight of 242.32 g/mol, its physical and chemical properties support consistent outcomes batch after batch.
Within the factory, the adoption of 4-Benzoylbiphenyl emerged from decades of working with aromatic ketones. Its structure—a biphenyl backbone joined to a benzoyl group at the para position—offers more than just a nuanced molecular formula. We regularly validate purity using HPLC and NMR, achieving results above 99% for demanding industrial requirements. The detailed control we exercise over its crystallization and drying processes has been shaped by years of close feedback from partner companies relying on stable performance.
We have supplied 4-Benzoylbiphenyl to clients ranging from specialty intermediate producers to research and development laboratories. Its principal value shows up wherever photoinitiating efficiency or structural consistency are required. 4-Benzoylbiphenyl serves as a core ingredient in the formulation of photoinitiators, especially for UV-curable coatings, adhesives, and inks. These sectors prioritize precision and stability—not only over the short term, but through the life cycle of the process line or end product.
In practice, formulation scientists look for consistent melting and dissolution behavior. Through regular collaboration with scale-up teams, our technical staff has learned that poorly defined melting profiles or unpredictable solubility cause headaches downstream—delayed production, loss of material, unpredictable polymerization rates. We have established strict controls in our reactors and drying ovens to guarantee that these problems stay out of the end user’s path.
In our experience, the value of 4-Benzoylbiphenyl does not come down to chemistry alone. Handling characteristics, color stability, surface cleanliness, and trace impurity levels all affect customer satisfaction. Users in optoelectronics and advanced polymer synthesis routinely point to lot-to-lot reproducibility as a source of trust. We have traced common contaminants: triphenylmethane byproducts, oxidized biphenyls, and unreacted starting material all threaten to degrade bulk outcomes, so each batch leaves the plant only after passing GC and MS panel checks.
Surface yellowing during storage has in the past prompted changes to our packaging process. Real-world feedback prompted us to introduce light-proof, airtight containers and employ faster transfer from crystallizer to storage. Every chemist in our operation understands that visible quality and specification conformity must coexist. The work does not end with certificates—it is about hands-on inspection, repeated running of IR spectra, and cross-checking against previous lots. We expect and deliver colorless to faintly yellow crystals, always free from dust and polymerized contaminants.
A distinguishing strength of 4-Benzoylbiphenyl is its photoreactivity—derived from conjugation between the biphenyl and benzoyl units. Our teams keep a close eye on this property, because even a small deviation from standard UV absorptivity changes real-world curing speeds. In the context of photoinitiators, customers building printing resins or coatings often rely on this compound as a crucial performance component.
A practical proof of its importance comes from one major customer in UV-cured adhesives: a replacement trial involving structurally similar aryl ketones immediately led to poor surface cure and adhesion faults. We worked directly with their development chemists to compare rates of radical generation and kinetic profiles. Only 4-Benzoylbiphenyl at the required purity allowed them to maintain uniform polymerization under their target lamp energies. Feedback like this underscores that not all aromatic ketones perform equivalently—a theme echoed throughout our manufacturing story.
End users appreciate more than just purity statistics. Flow properties during feeding, minimal fines, and minimized dust are crucial in automated dosing lines, especially in large-scale ink production. Early batches, years ago, generated excess fines, jamming valves and causing operator headaches on the line. Addressing this brought us back to fundamental crystallization control and particle sizing. Today, our product line achieves tight granulometry with minimal attrition. That comes directly from practical investments in screening, vibration, and controlled milling setups—an evolution tied to long-term relationships with process engineers, not simply optimization on paper.
One recurring concern for those introducing new batches of 4-Benzoylbiphenyl is material consistency over time. Unlike many trade-sourced lots, material from our reactors follows a documented, repeatable production pathway. Operators pull regular in-process samples, test for correct melting range, and visually inspect each shipment. The resulting track record for process reliability is as important as any marketing claim, and it underpins why many users gradually consolidate supply from those who actually produce, not redistribute, the chemistry.
Customer requests for substitutes sometimes lead to suggestions like benzoin, benzil, 4-acetylbiphenyl, or alpha-phenylacetophenone. Each of these offers related core structures, but with nuanced behavioral differences in polymer chemistry, photoreactivity, or material handling. For example, benzil (1,2-diphenylethane-1,2-dione) departs from 4-Benzoylbiphenyl in its dione functionality, which means different radical generation and curing pathways. In side-by-side trials, operators often note slower curing kinetics or altered yellowing patterns.
There are distinct challenges with some alternatives. 4-Acetylbiphenyl may look convenient due to lower cost, but its electron distribution prevents the same efficient photoinitiation under comparable lamp outputs. 4-Benzoylbiphenyl excels in deeper and more uniform curing, which our customers observing crosslinking performance have proven in multiple series of applications tests. Moreover, our years processing biphenyl derivatives have shown that certain side products prominent in other syntheses—like catalytically induced phenolic residues—rarely trouble our end product, largely due to both source control of reagents and trained process handling.
In chemical production, practicality extends far beyond meeting material specifications. Plant workers need clear documentation and direct experience to handle even moderately hazardous substances safely. 4-Benzoylbiphenyl, while not the most aggressive compound, still deserves proper respect—closed systems, point-source ventilation at loading stations, protective clothing, and prompt cleanup routines. We train all staff members, not simply to check boxes, but because experience has shown the risks posed by accumulated fines or solvent residues can escalate during multi-shift production.
Over the past few years, customer interest in minimizing process waste and solvent residues has overlapped with regulatory changes. Our facility invested in improved solvent recovery and closed-loop filtration to cut down off-air volatile emissions. Downstream users increasingly ask us to document our routine waste reduction, not only as a matter of compliance, but because their own audits often require traceability back to original practices. We see ourselves as partners in supply chain transparency, and our staff regularly fields customer audits to support green chemistry commitments.
Research customers often approach us looking for scaled trial samples, support in formulation compatibility, or guidance on rationalizing new raw materials in pilot batches. It takes a manufacturer’s insight to rapidly adjust lot sizes or specifications. Customizing crystal size, purity, or package format comes naturally to our team, which stands on a foundation of small-scale process development and scaled production capacity. An R&D scientist knows that timelines in the lab move quickly; supplying a kilogram for screening should not take weeks of negotiation or risky intermediates. Our factory shifts equipment between campaign- and batch-based runs according to needs drawn from day-to-day collaboration, not abstract market plans.
We have learned the value of follow-up: whether in scheduling new HPLC analyses for compatibility studies or troubleshooting solubility in exotic solvents. In ultraviolet-curable resin development, even minor differences in trace impurities affect downstream results. Through direct feedback loops with R&D partners, we can track performance all the way from bench-top evaluation to plant-scale conversion. This long-term mindset has shaped our own efforts in staff training and instrument maintenance, knowing each analytical decision reverberates through the commercial value chain.
The longevity of any chemical in industry depends on predictable behavior and the comfort it gives downstream producers. 4-Benzoylbiphenyl remains a go-to ingredient in photoinitiator synthesis for this reason, holding ground through cycles of new innovation and evolving regulatory pressures. We observe that engineering teams prefer sourcing from established manufacturing partners. A well-documented history of stability testing—ambient temperature storage studies, humidity cycling, long-term purity retention—provides practical evidence. Our incoming QA logs demonstrate lot stability years after packaging, with color and melting data maintained across archive samples.
Counterfeit or uncontrolled-synthesis material circulates in some markets. We have seen firsthand the damage this can cause: nonconforming batches that jeopardize critical production lines, create unusable end-product, or fail to meet performance specifications. Experience has shown us that transparent origin and detailed process documentation remain non-negotiable, not just for regulatory needs but for user peace of mind. Confidence in source and process assures users that the intermediate functions the same today as it did in previous campaigns. Trust is built on lived results, not hypothetical lab data.
Chemical production rarely stands still. In recent years, user inquiries have focused more on purity reporting, supply chain traceability, and sustainability documentation. We keep a close watch on evolving standards for REACH, RoHS, and GHS requirements—higher levels of scrutiny flow downstream to manufacturers. This affects 4-Benzoylbiphenyl both in documentation and in real operational routines: tighter in-process controls, robust impurity profiling, and improved stability data packages for each batch.
Markets drive change too. Formulators of 3D printing resins and high-performance composites now look for advanced specifications—controlling not just melting point, but minute trace levels of colored impurities that could alter product appearance or cure exposure windows. Acting on such requests, we have invested in high-resolution chromatography, upgraded our colorimetry workstations, and added more rapid response teams for deviation tracking. These steps come not abstractly, but as practical responses to evolving customer needs.
After decades in production, what stands out is that consistency, reliability, and openness drive industry preference. Whether supplying a standard kilogram, a container-load, or custom trial material, our operation revolves around these expectations. 4-Benzoylbiphenyl has earned its place through proven batch records, repeatable performance, and tight communication with users who count on exacting inputs for their innovation.
Our own development and feedback, both from inside our own team and from loyal partners, shapes each new adjustment: from granularity to packaging, from environmental procedures to logistics improvement. Every year brings new challenges—fluctuating market conditions, supply chain turbulence, regulatory headwinds—but at core, a stable product with clear, transparent origin and tested manufacturing practices makes all the difference. Through these standards, we keep 4-Benzoylbiphenyl relevant and valuable in demanding industrial environments.
Only the actual manufacturer holds both the granular detail and the operational leverage to shape product quality. Resellers and traders may reshuffle batches or bundle similar-sounding goods, but persistent value comes from the expert at the reactor, the technician at the screening table, and the worker who ships each drum with pride in process. 4-Benzoylbiphenyl is more than a catalog entry. It is the output of years of feedback, technical improvement, and mutual learning between user and maker.
Chemical manufacturing depends on real familiarity with both product and process. The demands from application chemists evolve, competition stiffens, and compliance questions multiply—but manufacturers who actively listen, adapt, and respond will continue offering the certainty that underpins industrial progress. 4-Benzoylbiphenyl, from our standpoint, represents the best of what careful, evidence-based production can deliver: material that simply works in practice, supported by the knowledge and commitment of those with direct responsibility for every lot.