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Tetrafluoroterephthalic Acid

    • Product Name Tetrafluoroterephthalic Acid
    • Alias 2,3,5,6-Tetrafluoroterephthalic acid
    • Einecs 609-041-6
    • 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

    268349

    Cas Number 393-58-2
    Molecular Formula C8HF4O4
    Molecular Weight 238.08 g/mol
    Iupac Name 2,3,5,6-Tetrafluoroterephthalic acid
    Appearance White solid
    Melting Point 281-284°C
    Solubility In Water Slightly soluble
    Density 1.83 g/cm³
    Boiling Point Decomposes before boiling
    Structure Benzene ring with two carboxylic acid groups and four fluorine atoms
    Pubchem Cid 31394
    Synonyms 2,3,5,6-Tetrafluorobenzene-1,4-dicarboxylic acid

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

    Packing & Storage
    Packing 250g of Tetrafluoroterephthalic Acid is sealed in a white, high-density polyethylene bottle with a tamper-evident cap and hazard labeling.
    Shipping Tetrafluoroterephthalic acid should be shipped in tightly sealed, corrosion-resistant containers, protected from moisture and incompatible substances. Use appropriate hazard labeling and documentation. Transport in accordance with local, national, and international regulations. Store and ship in a cool, dry place, and avoid physical damage to packages. Handle with appropriate personal protective equipment.
    Storage Tetrafluoroterephthalic acid should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizers and bases. Avoid moisture and exposure to extreme temperatures. Clearly label the container, and ensure storage is away from food and drink. Use appropriate chemical storage cabinets if available, and follow standard laboratory safety protocols.
    Application of Tetrafluoroterephthalic Acid

    Applications of Tetrafluoroterephthalic Acid in Industrial Manufacturing

    Tetrafluoroterephthalic acid supports advanced chemical manufacturing as a performance intermediate for high-end polymers and specialty chemicals. We supply material that meets stringent standards for high-precision industries. The following sections detail real downstream application scenarios in which our acid delivers consistently clear benefits to specialized manufacturing processes.

    1. High-Performance Fluoropolymer Synthesis

    Producers of fluoropolymers incorporate tetrafluoroterephthalic acid as a key difunctional monomer to achieve high thermal stability, low dielectric loss, and exceptional chemical resistance. The acid performs in direct polymerization with aromatic diamines or dialcohols, acting as a building block for poly(ethylene-co-tetrafluoroterephthalate) and other copolymers. The resulting thermoplastics withstand acids, bases, and solvents, finding application in electronics and chemical handling. Downstream users must manage the precise introduction point, as deviations can impact molecular weight and film properties.

    Industry compliance standards

    • ASTM D543 – Chemical Resistance of Plastics
    • ISO 9001:2015 – Quality Management for Polymer Manufacturing
    • REACH (EC) No 1907/2006 – Registration for Chemical Substances in EU
    • RoHS Directive 2011/65/EU – Restriction of Hazardous Substances for Electronic Polymers

    Typical usage ratio

    • 10-50 mol% relative to co-monomers, adjusted based on target glass transition temperature and mechanical strength requirements

    Downstream process integration

    • fed via monomer dosing unit into melt-phase polymerization reactors under nitrogen or vacuum to control molecular chain structure

    Final product types

    • printed circuit board base films
    • semiconductor device carriers
    • lab-grade chemical tubing
    • membrane materials for filtration systems

    2. Fluorinated Liquid Crystal Polymer (LCP) Manufacturing

    Advanced LCP compounds rely on tetrafluoroterephthalic acid for synthesis of aromatic polyester units, providing enhanced flame resistance, electrical insulation, and melt processability. Manufacturers precisely balance molar ratios with other diacid and diol monomers to engineer the LCP’s anisotropic melt properties. Accurate feedstock preparation impacts fiber strength and flow behavior in commercial-scale extrusion lines for films and molded parts. This specialty intermediate ensures low-leaching, chemically inert LCPs for high-frequency electronics.

    Industry compliance standards

    • IEC 61249-2-38 – Materials for Printed Wiring Boards
    • UL 94 V-0 – Flammability Classification for Plastics
    • ISO 14001:2015 – Environmental Management in Chemical Manufacturing

    Typical usage ratio

    • 20-30 mol% of total diacid components, with molar adjustment based on dielectric and mechanical criteria of the specific LCP grade

    Downstream process integration

    • added to batch melt polycondensation systems during the diacid phase, preceding the vacuum/stepwise polycondensation ramp-up

    Final product types

    • high-frequency flexible printed circuitry
    • miniaturized LCP connectors
    • microwave dielectric films
    • electronics encapsulation materials

    3. Specialty Aromatic Polyimide Production

    Leading polyimide manufacturers use this tetrafluorinated diacid for condensation with aromatic diamines, enabling the production of polyimides with low water uptake, high dimensional stability, and resistance to aggressive chemical environments. The precise acid-diamine stoichiometry impacts imidization yield, solution viscosity, and end-use color stability, critical for aerospace and photonics. Facilities must monitor chain extension and imide ring closure to maximize dielectric reliability in harsh service conditions.

    Industry compliance standards

    • MIL-PRF-31032 – Military Performance Specification for Polyimide Circuit Materials
    • IPC-4101/40 – Specification for Polyimide Laminate Sheets
    • AS9100 – Aerospace Quality Management

    Typical usage ratio

    • 20-40 mol% of dicarboxylic acid components in the reaction mix, adjusted to optimize for target polyimide glass transition temperature and processability

    Downstream process integration

    • integrated into polyamic acid solution preparation, followed by thermal/chemical imidization in casting or spin-coating operations

    Final product types

    • aerospace insulation films
    • flexible printed circuit substrates
    • advanced photolithography masks
    • precision pressure sensor diaphragms

    4. High-Purity Fluorinated Polyesters for Gas Separation Membranes

    Tetrafluoroterephthalic acid functions as a core building block for specialty polyesters used in gas separation and pervaporation systems. These polyesters exhibit high selectivity for polar gases and resist swelling in aggressive media. Material handling includes dissolution with glycols or diols, and stepwise chain build-up in stainless reactors. Exact dosing impacts permeability and selectivity indices, critical for downstream membrane spinning and flat-sheet casting in environmental and industrial filtration setups.

    Industry compliance standards

    • EN 779:2012 – Particle Air Filters for Filtration Industry
    • ISO 14663 – Quality for Specialty Polyester Membranes
    • ATEX Directive 2014/34/EU – Safety in Explosive Atmospheres for Process Equipment

    Typical usage ratio

    • 15-35 mol% of total dicarboxylic acid content, varied based on target permeability and mechanical properties

    Downstream process integration

    • introduced after pre-esterification stage in polycondensation, before vacuum-driven molecular build-up and film forming

    Final product types

    • CO₂/N₂ separation membranes
    • hydrocarbon vapor recovery films
    • solvent-resistant pervaporation sheets
    • industrial dehydration modules

    5. Modified Epoxy Resin Systems for Electronics Potting

    Producers of potting and encapsulation agents integrate tetrafluoroterephthalic acid as a modifier to introduce fluorine functionality into epoxy networks. The acid reacts as a difunctional chain extender in prepolymer blending, imparting improved hydrophobicity and dielectric breakdown strength for sensitive electronic assemblies. The acid content affects crosslink density and mechanical damping, which are tuned based on downstream device operating voltage.

    Industry compliance standards

    • IPC-CC-830B – Conformal Coating for Printed Circuit Boards
    • IEC 60664 – Insulation Coordination for Electronic Equipment
    • UL 746C – Polymeric Materials for Electronics Encapsulation

    Typical usage ratio

    • 1-5 wt% in the epoxy blend, determined by intended dielectric constant adjustment and moisture protection requirements

    Downstream process integration

    • added to resin formulation during pre-polymerization, prior to hardener addition and vacuum degassing

    Final product types

    • electrical potting gels
    • conformal coatings for PCB assembly
    • LED encapsulants
    • sensor potting compounds

    6. Fluorinated Polyester Enamel Wires

    Insulated winding wire manufacturers utilize tetrafluoroterephthalic acid for polyester-imide top coats, providing low dielectric loss, moisture resistance, and high breakdown voltage. The acid forms part of the polyester prepolymer in high-solids processes, enhancing film flexibility and service life under high-frequency cycling. Producers must calibrate monomer ratios to maintain adhesion and flexibility, avoiding embrittlement during high-speed enameling operations.

    Industry compliance standards

    • IEC 60317 – Specifications for Enamelled Round Copper Wire
    • UL 1446 – Systems for Electrical Insulation
    • JIS C3202 – Industrial Polyester Enamel Wire Standards

    Typical usage ratio

    • 8-25 mol% of the total diacid mix in polyester-imide enamel, adjusted for thermal class and targeted dielectric performance

    Downstream process integration

    • incorporated in acid preblend, polymerized to required viscosity, applied in continuous wire coating lines

    Final product types

    • enamelled copper winding wires for motors
    • transformer wires
    • high-frequency inductor windings
    • specialty magnet wire for automotive applications
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    More Introduction

    Tetrafluoroterephthalic Acid: Practical Insights from Production to Application

    Introduction to the Chemistry Behind Tetrafluoroterephthalic Acid

    Manufacturing Tetrafluoroterephthalic Acid, often referred to by its CAS number for chemical accuracy, involves more than just adding fluorine atoms to an aromatic ring. The process involves highly controlled conditions with a precise reaction between precursors under the right amount of heat, solvent, and time. Our years of producing this compound have taught us how crucial it is to monitor these steps closely. Even a single degree or unintended trace of metal impurities in the vessels can set production efficiency back and impact the purity.

    Our experience with this compound includes repeated optimization of the reaction environment. Fluorinated aromatic acids do not behave like simple benzenes. As a manufacturer, we have seen small changes in water content or solvent purity shift the results, so we track every variable. Over decades, we've found the ideal recipe—a method that results in a clean, off-white powder with minimal residual byproducts. This attention to lab detail has immediate impact on the people relying on high-quality fluorinated building blocks for follow-up syntheses.

    Why We Focus on Tetrafluoroterephthalic Acid

    Demand for advanced fluorochemicals often comes from industries aiming for extreme chemical resistance and low surface energies. Tetrafluoroterephthalic Acid sits high on that list because it brings unique advantages over difluoro- or perfluorinated counterparts. Engineers at customer plants often call us not just for commodity volumes, but for the kind of reliability that translates directly into process yields on their end. This drives our focus on TFA’s reliability as a raw material in their syntheses of high-performance polymers and precise intermediates.

    The shift to more aggressive operating environments—think semiconductor fabrication, advanced battery membranes, and specialty coatings—keeps increasing the need for selectivity in base chemicals. Tetrafluoroterephthalic Acid provides that selectivity through its strong electron-withdrawing properties, influencing downstream reactivity. Whether teams are making new monomers for specialty plastics or chemical-resistant coatings, the presence of four fluorines, correctly positioned, changes the chemical story. As a producer, we see requests for this molecule outpace similar acids lacking its distinct substitution pattern.

    Specifications and Handling: From Production Floor to Application

    In our facilities, we set strict benchmarks for this product. Our output reaches at least 99% purity, established by rigorous HPLC and NMR checks. Producers of high-tech polymers and specialty organics send their tech teams to audit our processes because trace impurities in Tetrafluoroterephthalic Acid can translate into material weaknesses or unpredictable properties down the chain. Our consistency comes from repeated internal training and investment in analytics.

    Particle size control is another area where hands-on knowledge matters. Some customers need a fine, free-flowing powder; others require slightly larger crystals to match their solid dosing feeds. We adjust the crystallization and drying stages to meet specific flow or dissolution targets. Shipping large lots by sea, we also learned that humidity and packaging integrity can’t be left for paperwork—every drum and liner gets checked by hand before sealing.

    Handling Tetrafluoroterephthalic Acid safely inside the plant and in customer sites requires equipment that can manage fine particulate fluorinated organics. We’ve set up specific dust extraction protocols, and our experience sharing these with end users has helped prevent failures from static buildup or filter clogging. Our operators emphasize the importance of real-world process knowledge over theoretical best practices—time saving for us means smoother, safer production for everyone down the line.

    The Edge Over Other Terephthalic Acid Derivatives

    The differences between tetrafluorinated and other terephthalic acids go beyond just the number of substituents. As a manufacturer, we treat each variant as practically its own product line. Terephthalic acid in its basic form is a workhorse for PET plastics, but fluorination opens up an entirely new playbook. We’ve learned through longtime partnerships with research teams that our tetrafluorinated version shows significantly higher resistance to acids and oxidants. In our own tests and in customer feedback, coatings and membranes built with Tetrafluoroterephthalic Acid outlast those from di- or even trifluorinated materials under harsh processing or exposure.

    Another strong point: the hydrogen bond-donating ability, and thus the solubility, changes with fluorine count. Our four-fluorine variant tends to be less soluble in water and some alcohols, which benefits end-users looking to control crystallization or prevent premature degradation in their systems. Process developers have explained to us that using lower-fluorine analogs often means complexing agents or process workarounds. With Tetrafluoroterephthalic Acid, the need for secondary stabilizers falls away in specialty polymers or cross-linkable intermediates.

    Tetrafluoroterephthalic Acid Use Cases: Insights from the Field

    In our daily business, we see projects that transform raw Tetrafluoroterephthalic Acid into everything from membrane components for hydrogen fuel cells to superhydrophobic surfaces for critical medical gear. It’s common for customers to run pilot batches using small, high-purity lots for new polyesters. The feedback we receive often mentions product flowability and minimal trace fluorine loss during melt processing—qualities that we’ve dialed in through years of post-synthesis purification tweaks.

    Researchers using our Tetrafluoroterephthalic Acid in polyimide synthesis find their products stand up to high voltages better than those from non-fluorinated analogs. Equipment makers have turned to us for advice on how to minimize discoloration or off-gassing during polymerization, learning shortcuts from our trial-and-error history. Analytical labs consult our in-house chemists directly for best practices in storing and sampling. These real-life exchanges push us to refine each production run, aiming for a product that not only meets stated specs but performs under the unpredictable loads of demanding applications.

    From our vantage point, membrane technologists benefit from using Tetrafluoroterephthalic Acid both for its chemical resistance and the thermal stability it imparts. Unlike standard terephthalic acid-based products, which may begin to deform or degrade in strong acidic media, the tetrafluorinated version remains stable, making it the material of choice in aggressive solvent conditions or high-temperature filtrations. Battery researchers exploring advanced electrolytes have built separators from our material and documented longer lifespans and reduced by-product formation.

    Importance of Source Consistency: The Manufacturer’s Perspective

    No lab report or certificate can substitute for decades spent refining a manufacturing process. Our team caught early on that batch-to-batch differences in Tetrafluoroterephthalic Acid can cause costly disruptions on customer lines. Even minor variations in particle habit or residual solvent levels show up as failed quality checks downstream. We’ve responded with methods rooted in repetition and real-world troubleshooting. Auditors from outside labs sometimes ask us about exotic analytical equipment, but a seasoned operator with years on the reactor is just as valuable.

    Long-term customers often recount times they switched suppliers and saw unexpected performance issues. By staying transparent about lot histories and process adjustments, we’ve built a foundation of trust beyond spreadsheets. Our sales team gets involved early in project planning, listening to R&D teams describe the fine points of their application—then we bring those insights directly to production. Customization here never means sacrificing consistency; it simply reflects small tweaks made safe by robust process control.

    Troubleshooting and Continuous Improvement

    Even tightly run operations encounter process drift. Reliable manufacturing of Tetrafluoroterephthalic Acid depends on everything from fresh solvent deliveries to the reliability of plant utilities. Our engineers spend just as much time tuning process water specs and reactor temperature programs as they do looking at final analytical results. Over the years, we've invested in process controls that sound alarms at the first hint of deviation, stopping problems before they spread to finished goods.

    Customer feedback drives much of our improvement. When a surfactant manufacturer noted unexpected foaming during their downstream esterification, we identified trace residual acid from upstream crystallizations as a culprit and adjusted our drying cycle. A coating formulator with inconsistent film performance found the answer lay in trace particulate carryover from our filter beds. We responded with a stricter filtration regime and walkthroughs for their process teams.

    This loop of real-world feedback and in-plant adjustment keeps our product practical and reliable. From solvent choice during recrystallization to drum packing density, every link in our chain comes under scrutiny, because we’re accountable to people trying to solve technical problems with our product—not end users who can afford to weather random swings in raw material quality.

    Looking Beyond Commodity Chemicals

    Anyone can claim to offer Tetrafluoroterephthalic Acid with a certain purity. What sets specialized production apart is experience marrying consistent molecular quality with stable logistics. Our chemists, plant operators, and technical sales teams have all seen the challenges this molecule brings: corrosive reaction byproducts, hard-to-filter slurries, and the need for careful temperature management in storage and transport.

    Others have tried to cut corners on purification or speed up drying at the expense of particle properties. Over the years, every shortcut has eventually surfaced in customer complaints or downstream process challenges. Our approach has been to invest in full transparency across the supply chain: calibrating scales on every shift, routine operator training, and direct communication about how order logistics might affect product shelf life or usability.

    We’ve replaced generic handling guidelines with tried and true procedures, tracked through decades of field experience. Packing lines now include redundant moisture checks because one rainy day during drum filling can undo months of careful process work. Our warehouse layouts evolved to anticipate the specific hazards of stockpiling fluorinated aromatics—both in safety and in long-term stability.

    Trends and Future Directions Based on Manufacturing Experience

    In recent years, manufacturing demand has shifted towards tailored intermediates, setting higher bars for traceability and documentation. Tetrafluoroterephthalic Acid remains a leader on this front because its well-defined structure translates into predictable reactivity and tractable process modeling. Designers of tomorrow's polymers and specialty fluids turn to us, not just for the chemical, but for insights about temperature control, compatible solvents, and regulatory updates around perfluorinated substances.

    We see a growing market for smaller, ultra-high-purity lots intended for electronics and medical devices. We've had to adapt—installing new cross-contamination controls in our fine-separation areas and establishing secondary containment zones for finished goods. Teams manufacturing semiconductors and implantable devices share a need for the highest purity, and our data demonstrates batch purity variability measured in fractions of a ppm.

    Meanwhile, users developing bold new resins or next-generation films report that the solubility differences between tetrafluorinated and less-fluorinated terephthalic acids allows for flexible formulation windows. We hold back lots for extended testing with their process teams, gathering insight that directs our next series of upgrades. These partnerships put knowledge-sharing at the center and keep the focus on final application performance, even as global regulations and market conditions change around us.

    Technical Development and Industry Collaboration

    Working closely with researchers in academic and industrial settings, our teams have identified new reaction partners for Tetrafluoroterephthalic Acid, broadening its reach into fields once reliant on more traditional aromatic acids. From advanced flame-retardant polymers to highly elastic yet chemically resistant elastomers, our compound’s rigid, highly fluorinated structure offers combinations of properties rarely seen before. Research groups often share preliminary results, and we incorporate lessons learned into future manufacturing cycles.

    Our open-door policy encourages collaboration. Project leaders developing new cross-linkable adhesives, optical films, or anti-fouling compounds schedule site visits or remote video walkthroughs with our chemists, gaining from process history. Many products on the market today trace their performance and reliability directly back to the lessons our manufacturing teams have learned, shared, and built into refining steps over years.

    Documentation doesn’t end up as a shuffle of certificates. Technical teams get full disclosure on every batch—from the origin of our starting materials to the methods we use to remove residual solvents or colored byproducts. For industrial partners, this context often spells the difference between success and unexpected downtime.

    Addressing Environmental and Regulatory Challenges

    Tetrafluoroterephthalic Acid, by its nature, prompts in-depth examination under emerging global regulations on fluorinated substances. Our safety, health, and environmental teams track rule changes and work with regulatory experts to ensure compliance, from REACH registration to local handling and waste guidelines. We’ve been proactive in updating SDS documents and running detailed toxicology reviews. Early engagement with regulators lets us offer up recommendations that protect both our workers and our customers.

    In daily operations, we minimize fluorinated waste by reclaiming solvents and capturing trace releases. Installation of advanced scrubbers and closed transfer systems formed part of our investment in responsible operations. We assist our downstream users with waste minimization tips and technical guidance on recycling and neutralization options, which further reduces environmental impact.

    Responsible chemical manufacturing isn’t an add-on for us—it's the shared standard that has kept our supply relationships strong and our operations running smoothly. As tighter standards emerge, our long track record and transparency help customers demonstrate their own compliance and sustainability efforts.

    Conclusion: Mapping the Road Ahead with Trusted Partners

    Our story with Tetrafluoroterephthalic Acid reflects years at the reactor and in the field—adjusting process knobs, fielding difficult customer calls, and meeting evolving technical challenges head-on. The compound continues to open up new doors for high-performance materials and drives us to keep refining production behind the scenes. Experience has sharpened our focus on traceability, process control, and collaborative problem-solving. This blend of technical know-how, practical wisdom, and problem-sharing with customers lets us deliver more than just a chemical: we deliver peace of mind for the most demanding applications where failure isn’t an option.