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4'-Chloro-Biphenyl-3-Carboxylic Acid

    • Product Name 4'-Chloro-Biphenyl-3-Carboxylic Acid
    • Alias 4'-Chlorobiphenyl-3-carboxylic acid
    • Einecs 252-087-7
    • 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
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    Specifications

    HS Code

    149247

    Product Name 4'-Chloro-Biphenyl-3-Carboxylic Acid
    Cas Number 121539-00-0
    Molecular Formula C13H9ClO2
    Molecular Weight 232.66 g/mol
    Synonyms 4-Chloro-3-biphenylcarboxylic acid
    Appearance White to off-white solid
    Melting Point 182-186°C
    Solubility In Water Slightly soluble
    Smiles C1=CC=C(C=C1)C2=CC(=CC=C2Cl)C(=O)O
    Inchi InChI=1S/C13H9ClO2/c14-11-7-6-10(13(15)16)8-12(11)9-4-2-1-3-5-9/h1-8H,(H,15,16)
    Purity Typically >98%
    Storage Temperature Room temperature
    Mdl Number MFCD11522070

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

    Packing & Storage
    Packing The 10g of 4'-Chloro-Biphenyl-3-Carboxylic Acid is sealed in a labeled amber glass bottle with a tamper-evident cap.
    Shipping The chemical **4'-Chloro-Biphenyl-3-Carboxylic Acid** is securely packaged in sealed, chemical-resistant containers to prevent leaks and contamination. Shipping complies with relevant safety regulations, including labeling and documentation. Temperature and handling instructions are provided as needed, ensuring safe transit for laboratory or industrial use. Only authorized personnel should handle upon receipt.
    Storage Store 4'-Chloro-Biphenyl-3-Carboxylic Acid in a tightly closed container, in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizers. Keep it protected from light, moisture, and sources of ignition. Ensure proper labeling and secondary containment. Use personal protective equipment as required and follow local regulations for storage of chemicals.
    Application of 4'-Chloro-Biphenyl-3-Carboxylic Acid

    Applications of 4'-Chloro-Biphenyl-3-Carboxylic Acid in Industrial Manufacturing

    As an advanced material manufacturer, we supply 4'-Chloro-Biphenyl-3-Carboxylic Acid for specialized applications across the chemical industry. This aromatic acid supports core synthesis and performance attributes in select high-value sectors. Our technical expertise assists customers through formulation integration, regulatory compliance, and downstream scale-up.

    1. Liquid Crystal Intermediate Production

    Manufacturers of high-end liquid crystal materials employ this compound as a critical intermediate, especially for the synthesis of biphenyl-based mesogenic cores found in displays and optical films. Its chloro and carboxy functionalization provides specificity during condensation and esterification reactions, ensuring phase stability and response characteristics in advanced display panels. Our processes guarantee traceability from raw acid through to customer-specified purity grades matching flat-panel and mobile device requirements.

    Industry compliance standards

    • IEC 61747 (Standard for liquid crystal displays)
    • QS-9000/ISO 9001 for electronic materials supply chains
    • RoHS Directive 2011/65/EU for hazardous substances
    • Chemical substances control laws in Japan and South Korea

    Typical usage ratio

    • 10–25% by mass in mesogenic core synthesis; ratio adjusted for target melting point and viscosity in downstream condensation processes

    Downstream process integration

    • Batchwise addition to the acylation/esterification step in mesogen production
    • In-process HPLC monitoring for residual acid content
    • Final product purification by column chromatography or recrystallization

    Final product types

    • Liquid crystal monomers and mixtures
    • TFT LCD panels (television, monitor, smartphone)
    • Specialty optical films and filters
    • Segment/character display devices

    2. Pharmaceutical Intermediate for Non-Steroidal Anti-Inflammatory Drugs (NSAIDs)

    This acid serves as a precursor in the multi-step synthesis of advanced biphenyl-based NSAID candidates and prodrugs. Its high-purity profile is essential during Friedel-Crafts acylation and amidation, ensuring defined stereochemistry and product identity. Our full batch documentation and impurity profiling support pharmaceutical GMP traceability from initial intermediate to active pharmaceutical ingredient formation.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for APIs
    • 21 CFR Part 210/211 cGMP requirements
    • European Pharmacopoeia (Ph. Eur.) monographs for intermediates
    • REACH Regulation (EC) No 1907/2006 for registration and risk assessment

    Typical usage ratio

    • 20–35% moles versus core arylamine in condensation; ratio further optimized in lead candidate development or generic API synthesis routes

    Downstream process integration

    • Acid chloride preparation via chlorination
    • Direct coupling with amine/amide scaffolds in solution-phase reactions
    • Crystallization followed by multi-stage purification

    Final product types

    • Biphenyl-based NSAID drug substances
    • Key advanced pharmaceutical intermediates (APIs)
    • Research compounds for clinical trials
    • Registered finished APIs supplied to global formulators

    3. Engineering Polymer Modifier for Specialty Polyamides

    4'-Chloro-Biphenyl-3-Carboxylic Acid acts as a co-monomer in the polymerization of high-performance aromatic polyamides (aramids), imparting improved thermal, mechanical, and dielectric properties demanded in automotive, electrical, and aerospace engineering. Accurate addition in controlled melt or solution polycondensation ensures desired chain structure and facilitates processability in fiber or film formation. Our tailored particle size and lot uniformity support high-throughput continuous operations for industrial scale clients.

    Industry compliance standards

    • UL 94 flammability tests for plastic materials
    • ISO 1043-1: Plastics – Identification and classification
    • REACH compliance for polymer monomer tracking
    • Automotive OEM specifications for high-performance resins

    Typical usage ratio

    • 2–8% by mole in polyamide resin backbone formation; ratio adjusted to optimize strength, modulus, and melting point for targeted engineering applications

    Downstream process integration

    • Pre-weighing and dry blending with main diamines or acid chlorides
    • Continuous addition during polycondensation in autoclaves or reactors
    • Post-polymerization extrusion and pelletizing for downstream molding

    Final product types

    • High-temperature polyamide resins
    • Technical fibers for composites
    • Dielectric films for electronic applications
    • Molded automotive and aerospace parts

    4. Agrochemical Intermediate for Selective Herbicide Synthesis

    Agrochemical producers use this compound as a structural precursor in the synthesis of certain biphenyl-substituted selective herbicides. Its defined substitution pattern enables key coupling and ring-closure steps during active ingredient formation. Batch-to-batch consistency supports downstream hydrogenation and halogen exchange with minimized by-product formation, critical in high-volume crop protection product manufacturing.

    Industry compliance standards

    • ISO 9001 quality systems for agricultural chemicals
    • FAO and WHO guidelines for pesticide specification development
    • Global GHS/CLP hazard communication compliance
    • National agrochemical registration (EPA, China ICAMA, EU PPP)

    Typical usage ratio

    • 15–30% mole in the key condensation or coupling reaction; ratio tailored to herbicide molecule structure and yield optimization studies

    Downstream process integration

    • Synthesis entry in aromatic acylation under controlled pH and temperature
    • Purification by crystallization or extraction prior to final active assembly
    • End-stage quality testing for residual starting material

    Final product types

    • Biphenyl-based herbicide actives
    • Concentrated herbicide formulations (SC, EC, WG)
    • Pre-mix ingredients for broadleaf and cereal crop protection

    5. Electronic Chemical for Advanced Photoresist Formulation

    Leading microelectronics manufacturers incorporate this acid as a minor functional component in the synthesis of novel biphenyl derivatives for advanced i-line and DUV photoresist formulations. Its inclusion tailors molecular absorption and solubility profiles, delivering tight control over resolution and line edge roughness. Our manufacturing supports sub-ppm metallic impurity targets required for cleanroom semiconductor processes.

    Industry compliance standards

    • SEMI C44-0307 standard for photoresist materials
    • ISO 14644-1 for cleanroom compatibility
    • RoHS and REACH compliance for hazardous substances management
    • Internal goodness requirements from major semiconductor fabs (Intel, TSMC, Samsung)

    Typical usage ratio

    • 1–5% by mass in photoactive compound synthesis; ratio varies by target wavelength absorption and process developer compatibility

    Downstream process integration

    • Reactive blending within protected vessels under inert atmosphere
    • Filtration and micro-contamination control through multi-stage purification
    • Formulation into resist solutions for spin-coating and photolithography lines

    Final product types

    • ArF and KrF photoresist materials
    • Substrates for integrated circuit fabrication
    • High-resolution photomask raw solutions

    6. Dye and Pigment Intermediate for High-Performance Colorants

    Sophisticated dye and pigment manufacturers rely on this raw material for the synthesis of specialty biphenyl-derived chromophores used in high-fastness colorants for plastics and inks. Its substitution pattern provides defined sites for further halogenation and azo coupling, producing pigments characterized by high light stability and intense tone. Our supplied grades align with dispersion and filtration standards required by downstream compounders and ink producers.

    Industry compliance standards

    • EN 71-3 Safety of toys (migration of certain elements for colorants)
    • ISO 12040 for pigment identification
    • REACH SVHC assessments for dye intermediates
    • Printing ink and polymer additive toxicological standards

    Typical usage ratio

    • 5–18% by mole in base pigment synthesis; adjusted for chromophore chain length and degree of halogenation required

    Downstream process integration

    • Diazotization and coupling as first or second step in pigment synthesis
    • Isolation via filtration and grinding to target particle size distribution
    • Surface treatment before dispersion into end-use ink or resin systems

    Final product types

    • High-performance plastic pigments (masterbatch, fiber, film)
    • Solvent-resistant inks for industrial marking
    • Weather-fast architectural coatings
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    Certification & Compliance
    More Introduction

    4'-Chloro-Biphenyl-3-Carboxylic Acid: A Closer Look From Our Manufacturing Floor

    Introduction

    Bringing a specialty fine chemical to market always means stepping up to challenging demands for quality, traceability, and consistency. We have focused a large part of our custom synthesis efforts on biphenyl derivatives because of the technical capabilities and scientific interest they support. One of those compounds, 4'-Chloro-Biphenyl-3-Carboxylic Acid, draws significant attention from research, materials science, and industrial application developers. Years of hands-on experience have shown that every tweak in the production process influences both the outcome and the trust that advanced users place in our work.

    What Makes 4'-Chloro-Biphenyl-3-Carboxylic Acid Unique

    This molecule offers a combination of two functional groups – a chloro substituent and a carboxylic acid. The carboxyl group sits at the third position of the biphenyl ring; the chloro group occupies the fourth position of the second phenyl ring. This particular arrangement makes a large difference compared to, say, biphenyl-4-carboxylic acids, which shift their reactivity and solubility profile. In extensive benchwork, our chemists have seen that changing even one substituent’s location can reshape how the molecule partners up in further synthesis. That opens up routes for esterification, amidation, or cross-coupling that cannot be replicated with other regioisomers.

    Our team approaches the synthesis of 4'-Chloro-Biphenyl-3-Carboxylic Acid with fresh insight brought by direct feedback from scale-up specialists and end-users. Each project underscores that a tightly controlled reaction sequence starting with clean, high-purity biphenyl cores ensures reproducibility batch after batch. We monitor each process stage, relying on chromatographic and spectroscopic checks well past the points required by published standards.

    Specifications and Consistency

    Our product comes as a pale solid, crystalline, with minimal residual solvents. Each lot’s purity passes stringent targets set by analytical HPLC and NMR, and experienced chemists pay close attention to subtle impurities that often slip into commercial stocks. Beyond the headline purity number, we measure and limit moisture, as well as trace inorganic contaminants deriving from catalysts or starting materials. By certifying the polymorph and particle size distribution of the compound, we directly answer researchers’ concerns about reproducibility from test tube to pilot line. Some of the best learning comes from users reporting batch-to-batch yield variations linked not just to purity but to physical form, so we share all relevant characterization data as part of our standard documentation.

    From a manufacturer’s perspective, the challenge does not end at producing a pure compound. Since many clients ask for 4'-Chloro-Biphenyl-3-Carboxylic Acid as a key feedstock, we anticipate scale-up and supply chain needs. We keep strategic inventory and manage materials under an inert atmosphere to prevent any hydrolysis or structural degradation. Our logistics team employs chemical-safe containers rated for acids and shields the material from atmosphere and light, based on stability tests conducted in our own facility.

    Applications: Insights From Real Use Cases

    The strongest interest in 4'-Chloro-Biphenyl-3-Carboxylic Acid comes from specialty polymers, functional materials, and pharmaceutical development projects. It finds its way into fabrications of advanced polymers, often serving as a monomer or modification agent that can tune properties like thermal stability, mechanical response, or solubility in mixed solvents. Collaborations with research groups revealed that the molecule’s regioselectivity provides ideal anchor points in Suzuki and related cross-coupling protocols—a level of performance not reached using other biphenylcarboxylic acids, especially those lacking the para-chloro configuration.

    In one example, a project team synthesized new liquid crystalline materials using this acid to control alignment and transition temperature. Only the 4'-chloro version unlocked the right chemical response, enabling controlled orientation on a substrate—a result confirmed in repeated runs, all started with our product. Academic groups pushing boundaries in organic electronics emphasize the carboxyl group’s influence on charge carrier mobility once incorporated into complex architectures. Their feedback guides our attention to minimizing unknown byproducts, recognizing that a minor impurity can translate to a measurable dip in device performance.

    Pharmaceutical units depend on our tight quality control, as trace contaminants may trigger side reactions during scale-up. Advanced medicinal chemistry often calls for selective functionalization of the biphenyl core, and the 4'-chloro feature opens new synthetic doors. Our work with contract research organizations demonstrates that a reliable supply, along with detailed lot characterization, speeds up reaction screening and route scouting.

    Why the Model and Manufacturing Matter

    Every chemist on our team understands the frustration of working with a batch that behaves differently from the last. Over the years, we put effort into dialing in a robust and transferable route for synthesizing 4'-Chloro-Biphenyl-3-Carboxylic Acid. Avoiding halogen scrambling and incomplete carboxylation means sticking to precise control of temperature, reagent quality, and reaction time. Early optimization studies showed that the typical pitfalls of over-chlorination, tarring, or debromination can introduce unknown impurities. We now track and eliminate those, removing them in purification steps specific to this molecule and not used for related isomers.

    Unlike commodity manufacturers focused on single-step outputs, our process starts with assaying every input and confirming identity and purity. We anchor our batch release on real measurement, not just literature-reported theory. For each lot, we provide spectra and MS data, and for bulk partners, we support custom documentation down to the microtrace level. Our analytical chemists regularly consult with application scientists to resolve any unanswered questions that affect downstream success.

    The feedback we’ve gathered from synthetic labs makes clear that stability during storage and shipment is almost as vital as the initial purity. We routinely run real-scenario storage trials using sealed ampoules, nitrogen-flushed drums, and bulk containers. The experience of watching what degrades and what holds up lets us improve safeguarding on every order, reducing loss or change before it reaches the customer. Whenever a trend emerges—such as unexpected color change over a few months—we adjust packaging protocols or investigate new stabilizer addition points, guided by data, not one-size-fits-all patterns.

    Comparisons With Other Biphenylcarboxylic Acid Products

    Detailed study of functionalized biphenyl acids highlights real differences. Take the case of biphenyl-4-carboxylic acid or 2-chloro-biphenyl-3-carboxylic acid; their response in organic reactions shifts, sometimes in unpredictable ways. We’ve spent years building up a dataset on isomerically pure acids because accidental mix-ups can tank a scientific program. Side-by-side, 4'-Chloro-Biphenyl-3-Carboxylic Acid offers a distinctive reactivity, giving easier downstream functionalization on the hallmark positions of the biphenyl moiety. Small-scale runs and literature reviews give numbers, but handling gram to kilogram lots in a manufacturing setting highlights even bigger contrasts in crystallization tendencies, solvent affinities, and ease of handling.

    Some products prone to polymorphic transitions challenge even seasoned chemists. Our version of 4'-Chloro-Biphenyl-3-Carboxylic Acid consistently resists unwanted transformations during drying or extended storage; that reliability translates into more stable stock for end users. Unlike some other chloro-biphenyl acids, ours maintains solubility limits tailored to key process solvents, an edge for formulation teams developing next-generation polymer additives. We have watched other commercial samples lose their handling benefit due to higher moisture or trace chlorinated impurities, which then show up as noise in analytical systems downstream. Frequent user feedback prompted us to close these gaps with added quality gates.

    By routinely checking side-by-side performance of this acid versus closely related alternatives in pilot syntheses and material production, we back up our purity and physical form claims with evidence, not just an assumption that all biphenyl acids act the same. Labs seeking strong coupling partners, or polymer developers tuning chain mobility, see a direct benefit from switching to this well-defined isomer. Failures and successes across pharmaceutical, materials, and academic research all reinforce the need for a dependable supply chain and consistent chemical profile, so we design our process around their priorities.

    Process Improvements and Sustainable Manufacturing

    Long-term supply is about more than consistency; it includes how we manage scale and sustainability. Decades of handling complex biphenyl derivatives have led us to optimize solvent recovery, minimize waste, and invest in energy-efficient reactors. Reports from regulatory agencies and customer site audits keep us focused on safe, responsible production. Instead of relying on outdated chlorination protocols, our in-house process engineers rebuilt parts of the route to sidestep environmentally risky intermediates and favor less hazardous byproducts. In practice, this means fewer handling hazards, streamlined permits, and lower emissions per kilogram delivered.

    Consistency builds trust, but so does transparency. For research groups needing to match literature protocols or regulatory filings, our team openly shares details on synthetic route, purification approach, and batch analytics. Current best practice expects material traceability from raw input through to delivery documentation, and we keep digital records and backup samples so results can be cross-checked if a project needs confirmation.

    We’ve partnered with universities to fine-tune greener synthesis for 4'-Chloro-Biphenyl-3-Carboxylic Acid, including catalyst recycling, water usage reduction, and using safer, lower-boiling solvents. By keeping laboratory and plant teams closely aligned, changes vetted at bench scale have fed back into plant runs with minimal downtime. Each improvement passes through strict yield, cost, and environmental impact analysis—not just to hit a “green score”, but to make supply secure no matter how smart regulations or market conditions evolve.

    Supporting Users Beyond the Lab

    The requests coming from leading-edge users go beyond just buying material. Regulatory approval teams, patent agents, and R&D directors look closely at supply credentials, chain of custody, and future availability. Our years in the business taught us to respect those requirements as much as any chemical test. We work closely with partners to document batch origins, update stability data, and answer technical questions on storage or safe handling. If a material oddity shows up, we treat it as a process improvement opportunity and investigate with customers on technical details. Sharing best practices, from dissolution tips to impurity control, supports stronger results in production and publication.

    Scaling up chemistry is rarely smooth. Clients approach us with challenges in making high-purity intermediate or with inconsistent product yields when using competitor-supplied 4'-Chloro-Biphenyl-3-Carboxylic Acid. Our technical support crew, with hands-on batch synthesis experience, stays available to talk through synthesis troubleshooting, storage optimization, or select scale-up queries. Sometimes, shipping schedules hinge on turning around repeat lots quickly; our track record in holding strategic inventory and planning logistics lets collaborators mitigate delays or unexpected surges in demand.

    Looking to the Future

    Continuous innovation is the backbone of our facility, not only for 4'-Chloro-Biphenyl-3-Carboxylic Acid but across our entire biphenyl derivative suite. Each new use case or research trend that lands on our desk prompts review and, if needed, adjustment to process, documentation, or purity targets. Our R&D team follows major patent releases, tracks academic citations, and explores new analytics so the next cycle of improvements aligns with emerging needs in advanced materials and pharmaceuticals.

    We see growing interest in personalized material properties, non-standard polymorphs, and tight impurity profiles. Client input helps us prioritize which process variables to tighten further and what new analytical protocols to introduce. Our goal remains to offer not just a commodity, but a well-documented, high-integrity product that advances research and production.

    Final Perspective From a Manufacturer’s Desk

    Years of producing 4'-Chloro-Biphenyl-3-Carboxylic Acid have confirmed a guiding principle: close attention to details at the manufacturing level translates to fewer headaches at the user end. Listening to user feedback, working out root causes of inconsistencies, and investing in both equipment and human expertise pays off as visible, measurable benefits. No generic, one-size-fits-all approach meets the demands of advanced research or high-specification production, so we bring forward data, transparency, and ongoing improvement for every lot shipped. As synthetic chemistry advances, we continue to match pace, committed to supplying a reliable, well-characterized product rooted in manufacturing experience and scientific partnership.