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11H-Perfluoroundecanoic Acid

    • Product Name 11H-Perfluoroundecanoic Acid
    • Alias PFUnDA
    • Einecs 206-203-2
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry sales7@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    800290

    Chemical Name 11H-Perfluoroundecanoic Acid
    Molecular Formula C11HF21O2
    Molecular Weight 520.09 g/mol
    Cas Number 2058-94-8
    Appearance White solid
    Melting Point 75-78°C
    Solubility In Water Insoluble
    Density 1.8 g/cm³ (approximate)
    Synonyms Perfluoroundecanoic acid, PFUnDA
    Structure Perfluorinated alkyl carboxylic acid
    Inchi InChI=1S/C11HF21O2/c12-2(13,1(11(31)32,30)14,3)4(15,16)5(17,18)6(19,20)7(21,22)8(23,24)9(25,26)10(27,28)29/h(H,31,32)
    Ec Number 218-168-8
    Pubchem Cid 12101

    As an accredited 11H-Perfluoroundecanoic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 500g of 11H-Perfluoroundecanoic Acid is supplied in a sealed, chemically-resistant amber glass bottle with tamper-evident cap.
    Shipping 11H-Perfluoroundecanoic Acid is shipped in tightly sealed, chemical-resistant containers to prevent leaks and contamination. Packaging ensures protection from moisture, light, and physical damage. The shipment complies with relevant hazardous materials transport regulations, typically labeled as environmentally hazardous. Proper documentation and safety data accompany all shipments for safe handling and regulatory compliance.
    Storage 11H-Perfluoroundecanoic acid should be stored in a tightly sealed container, positioned in a cool, dry, and well-ventilated area away from direct sunlight and sources of ignition. Keep it separate from incompatible substances such as strong oxidizers and bases. Ensure proper labeling and access only to trained personnel, using secondary containment to prevent accidental spills or leaks.
    Application of 11H-Perfluoroundecanoic Acid

    Applications of 11H-Perfluoroundecanoic Acid in Industrial Manufacturing

    11H-Perfluoroundecanoic Acid serves as a specialty intermediate and performance additive in advanced manufacturing sectors. As the original producer, we work closely with customers to meet technical requirements, formulation standards, and regulatory frameworks across critical downstream applications. Below we outline the most significant and compliant uses for this material in industrial practice.

    1. Fluorinated Surfactants for Firefighting Foam Production

    Manufacturers in the Class B firefighting foam industry use this acid as a fluoroalkyl intermediate during AFFF (Aqueous Film Forming Foam) compound synthesis. Our product provides controlled surface tension reduction and stable film formation on hydrocarbon surfaces. Regulatory adherence includes the transition toward PFAS management, while technical grade consistency ensures process reliability in blending and final foam concentrate formulation.

    Industry compliance standards

    • NFPA 11 (Standard for Low-, Medium-, and High-Expansion Foam Systems)
    • US EPA PFAS Action Plan guidance for environmental safety
    • REACH Regulation (EU) for fluorochemical handling and disclosure
    • UL 162 for foam liquid concentrates

    Typical usage ratio

    • 0.3%–1.2% by weight in finished AFFF concentrate, dependent on required film persistence and fuel type
    • Adjustable according to specific fluorosurfactant activity required by end-user specification

    Downstream process integration

    • Incorporated during the fluorosurfactant synthesis stage, prior to aqueous blending
    • Reacted with alcohol or amine for final salt formation
    • Quality control step: functional group confirmation by NMR/FTIR
    • Blending with hydrocarbon surfactants and water for final concentrate

    Final product types

    • Aqueous Film Forming Foam concentrates (AFFF)
    • Alcohol-resistant foams (AR-AFFF by further functionalization)
    • Training foam solutions (where local regulations allow)
    • Fire suppressant delivery systems for industrial and aviation fuel storage

    2. Oil-Repellent Coatings for Electronics Assembly

    Electronics coating formulators use this acid to synthesize perfluorinated monomers and polymers for application onto printed circuit boards and display surfaces. These coatings impart durable oil, water, and dust repellency, critical in precision assembly environments. Integration focuses on high-purity formulations to meet tight manufacturing tolerances and regulatory demands on perfluoroalkyl substances within consumer and industrial electronics.

    Industry compliance standards

    • IEC 61189-5 (PCB material characteristics and testing)
    • RoHS Directive (2011/65/EU) for restricted hazardous substances
    • China RoHS for electronics import and export
    • REACH Annex XVII for fluorosurfactant use restriction

    Typical usage ratio

    • 0.05%–0.8% by weight in coating polymer formulations, adjusted for target surface energy and thickness
    • Optimization influenced by required contact angle and reflow compatibility

    Downstream process integration

    • Polymerized with diacid or diol co-monomers
    • Processed using solvent-casting or dip-coating for homogeneity
    • UV-curing or thermal curing for final crosslinking
    • Used in cleanroom-controlled environments to avoid contamination

    Final product types

    • Oil-repellent PCB coatings
    • Displays and touchscreen protective films
    • Membrane keypads and switches
    • Connector housing surface treatments

    3. Surface-Modified Membranes for Industrial Filtration

    The acid acts as a chemical modifier in the fabrication of high-efficiency micro- and ultrafiltration membranes. Membrane OEMs covalently bind the fluoroalkyl group to polyethersulfone or PVDF matrices, providing membranes with superior hydrophobicity and chemical resistance. This enhances process reliability in harsh filtration environments, such as industrial wastewater and aggressive solvent recovery.

    Industry compliance standards

    • ISO 9001:2015 for membrane manufacturing quality systems
    • NSF/ANSI 61 for water system components (industrial, non-potable)
    • EU Directives for Industrial Emissions compliance
    • China GB/T 13935-2008 (test methods for membrane separation)

    Typical usage ratio

    • 0.1%–1.3% by weight during membrane polymerization phase, varying by required pore size and hydrophobicity
    • Adjustment based on solvent compatibility and target flux rate

    Downstream process integration

    • Mixed with base polymer in solvent-casting or melt extrusion process
    • Surface activation via plasma or corona discharge to promote fluorochemical bonding
    • Post-modification rinses to remove residual free acid
    • Quality verification by liquid entry pressure and contact angle testing

    Final product types

    • Hydrophobic filtration cartridges
    • Industrial waste gas separation modules
    • Chemical-resistant microfiltration sheets
    • Fuel cell gas diffusion layers

    4. Specialty Fluoropolymer Synthesis for Chemical Resistant Linings

    Fluoropolymer manufacturers incorporate this material as a co-monomer or chain modifier during high-performance polymer synthesis. Through controlled polymerization, it introduces specific chain lengths and functionalities, supporting the production of linings and seals for high-corrosion applications in the chemical process industry. This use requires tightly monitored raw material quality and compliance with sector-specific regulatory audits.

    Industry compliance standards

    • ASTM D543 for chemical resistance of plastics
    • ISO 17409 for evaluation of plastics in chemical plants
    • EN 14419 for fluoropolymer-lined equipment
    • China GB 50093 for equipment anti-corrosion

    Typical usage ratio

    • 0.2%–2.1% incorporated during initial monomer feed, based on the molecular weight target and end-use conditions
    • Adjustment guided by final lining thickness and acid resistance

    Downstream process integration

    • Co-polymerized via emulsion or suspension processes
    • Integrated with PTFE or FEP base materials
    • Shaping by extrusion or compression molding
    • Post-cure at regulated temperature for dimensional stability

    Final product types

    • Chemical tank lining sheets
    • Pumps and valve seals for corrosive media
    • Fluoropolymer-coated pipework
    • Process vessel linings for semiconductor and pharmaceutical production
    Free Quote

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    Certification & Compliance
    More Introduction

    Introducing 11H-Perfluoroundecanoic Acid: Specialty Chemical Manufacturing Insights

    Direct from the Manufacturer: Understanding 11H-Perfluoroundecanoic Acid

    The work we do at the factory floor teaches us that the details of a molecule shape its purpose and value. We have been producing perfluorinated acids for decades, and 11H-Perfluoroundecanoic Acid holds a special place in that catalog. With its extended perfluorinated carbon chain and unique terminal hydrogen, our process control has to be precise to yield a product that delivers on purity and repeatable performance batch after batch. We know this material inside and out, from the reaction vessels to the final quality checks. It’s more than just a chemical formula: for customers, small variances have business-wide effects, so we keep our standards high and our process under tight management.

    The Model and Physical Properties We Maintain

    11H-Perfluoroundecanoic Acid, with the formula C11F23COOH, is distinguished by its chain length—longer than the more familiar perfluorooctanoic acids (PFAOAs) but shorter than some of the heaviest perfluorinated compounds. What this translates to in the plant is a solid, waxy acid, produced under strictly controlled conditions to minimize residual solvents and isomeric impurities. Each batch undergoes FTIR, NMR, and mass spectrometry confirmation, and our runs consistently achieve high purity—needed for sensitive end uses. The molecule’s chain is both hydrophobic and lipophobic, providing a uniquely balanced surface energy that researchers and process engineers count on for specific physical behaviors.

    What Sets 11H-Perfluoroundecanoic Acid Apart?

    Many users ask us what makes this acid different from other perfluorinated acids or carboxylic acids. We see the answer in real-world application feedback and the way the molecule behaves during manufacture. The extra carbon atoms compared to perfluorooctanoic acid mean greater thermal stability and chemical inertness. The acid’s tail resists degradation under harsh processing, letting it function where shorter-chain analogs would break down. Chemists often seek this specific chain length for surfactant development or as a template for polymerization reactions. We consistently hear from labs and pilot plants that they gain improved performance in hydrophobic coatings, anti-fouling agents, and modified surfaces demanding a persistent, ultra-low energy interface.

    Unlike non-fluorinated carboxylic acids, our product does not oxidize or polymerize unpredictably. The bond energy within the perfluorinated chain gives it a durability rarely matched by other organic acids. In polymer chemistry, this ensures that functionalized surfaces retain their designed properties longer—feedback we hear from both R&D departments and end-users. When comparing to mid-length acids, suppliers and users alike have told us about challenges with volatility and surface migration. Our 11-carbon chain curbs these issues and remains where it is intended in the finished product.

    Real-World Applications and Lessons from the Field

    We don’t just manufacture and ship; we listen to how customers use our material. Research teams have reported that the acid provides an excellent platform for developing perfluorinated surfactants required in specialty coatings. These coatings find their way into aerospace, medical devices, and advanced electronics, where both consistent composition and contaminant control give a real edge. The acid’s purity profile, as we see from our analytical data, limits unintended side reactions in key processes. One client, working in membrane fabrication, provided case studies showing our batches led to repeatable wettability and fouling resistance over several manufacturing cycles.

    On the environmental side, we know that perfluorinated compounds have drawn scrutiny. We invest heavily to capture and treat effluent streams, committing to best practices in containing environmental impact. In product development, our engineers coordinate directly with customers when they aim to test alternatives or minimize use, so that waste and residuals are tightly managed. Feedback cycles from production lines and QA labs have driven us to improve in-process controls and reduce energy consumption in each synthesis batch.

    Critical Role in Surface Chemistry

    Over time, we have witnessed the shift from short-chain to longer-chain perfluorinated acids in industrial formulation. Shorter chains, such as perfluorooctanoic acid, provide some properties, but longer chains opt for improved droplet repellency and resilience against leaching. Formulators use 11H-Perfluoroundecanoic Acid as the backbone for synthesizing non-stick surfaces that resist a broader spectrum of chemicals, grease, and water—qualities hard to achieve with standard organics. The C11 acid integrates into coatings and surface treatments without introducing process instabilities. Operations in our own blending facility confirm this stability, with minimal foaming and consistently smooth dispersal in both aqueous and non-aqueous systems.

    Teams developing medical diagnostic devices value this acid’s predictable hydrophobicity. Our involvement starts long before their production phase, consulting with their chemists regarding how minor changes in residual water or trace metals could alter device yields. By keeping those levels exceptionally low at the production stage, we have become a preferred supplier for customers with critical performance requirements. Sometimes, minor impurities, present at just a few parts per million, have changed device accuracy—a lesson we internalize in both process tuning and downstream analytics.

    Manufacturing Challenges and Solutions

    The path to reproducible 11H-Perfluoroundecanoic Acid is paved with those manufacturing challenges that might not be visible to an outsider. Chain length control is perhaps the single most critical step in synthesis. Too broad a distribution in carbon count reduces downstream performance measurably. Our reactors and distillation columns receive continual upgrades. Every addition of feedstock is tracked, and reaction time is finely tuned to reduce side-product formation. We train our operators in the actual chemistry behind the process, not just the procedures, so that subtle shifts in reaction progress are instantly recognized and corrected.

    Waste minimization remains a constant goal in our shop. While much focus in specialty chemistry centers on output, we allocate engineering hours to distillation and purification recovery streams. In the past, inefficient solvent stripping resulted in both product loss and environmental risk. Today, advanced condensation technology has cut that risk in half. We reinvest gains from these improvements back into staff development and more robust process analytics. As scrutiny over persistent environmental contaminants grows, we anticipate and act to reduce the legacy footprint.

    Quality and Consistency in Every Lot

    We approach quality as a continuous, daily task. The most brittle point in perfluorinated acid production is cross-contamination between similar chain-length products. Our facility is designed to dedicate lines to different products, an investment that pays back each time a customer verifies composition at their own site. We have implemented a full traceability system—every batch we produce can be tracked, ingredient-by-ingredient, through each processing tank and vessel. When a small batch failed Q/A due to an equipment seal issue last year, our team retraced every step to the root cause and replaced the compromised gaskets plant-wide.

    Not every batch reaches a customer—any that falls outside our purity or moisture specification is reprocessed. The cost of this discipline is high, but loss of reputation is far greater in our experience. Over the years, customers have sent us comparative analysis reports, showing that our product achieves more stable performance metrics, even under stressed processing conditions. Feedback like this motivates us to keep improving. Direct manufacturer involvement lets us adjust parameters in real time, responding to field data, not guesswork or spreadsheets.

    Comparing 11H-Perfluoroundecanoic Acid to Alternatives

    Not every application can benefit from a long perfluorinated acid chain. Sometimes price, regulatory concerns, or custom process requirements mean a shorter chain or a non-fluorinated acid might be considered. Yet, where high chemical durability and persistent repellency are critical—advanced membranes, electronic substrates, specialty filter media—customer labs report that switching to alternatives can mean a steady increase in maintenance and decreases in surface performance. In several industries, process engineers have shared data showing loss of non-stick performance or poor resistance to aggressive cleaning chemicals when lesser acids are used.

    We have worked with clients assessing bio-based and partially fluorinated acids for new applications. In most direct comparison studies, the difference is found in thermal stability and minimal extractables under harsh conditions. Our experience on the factory floor confirms this: 11H-Perfluoroundecanoic Acid, when made to high standards, reliably allows less migration into surrounding materials, preserving not only performance but compliance with strict industry regulations around safety and migration.

    Where We See the Industry Moving

    Demand for specialty perfluorinated compounds is evolving. Regulatory pressure and environmental responsibility drive substantial investments in process safety and emissions reduction. From our vantage, the future belongs to those who make quality and safety central to production. Innovation will grow in both the development of new perfluorinated molecules and the method of their production. Already, some research teams co-develop with us, aiming for molecules with more targeted environmental profiles—either shorter lifespans in the environment or improved recyclability.

    We remain in front by modernizing our equipment and providing transparency to our partners. Audits and process documentation are not red tape to us; they are how we ensure trust. We make sure every tank, line, and control panel stays within repeatable range before charging raw materials. After each batch, our lab shares not just spec sheets, but full spectral and chromatographic data with major account holders. The best improvements come from feedback at every stage, so we actively invite field chemists and process operators to share real usage challenges.

    Supporting Responsible Chemistry: What the Manufacturer Must Commit To

    Long-chain perfluorinated acids demand stewardship. Each time we produce a run of 11H-Perfluoroundecanoic Acid, safety and environmental compliance start before the first raw material enters a reactor. We have invested in advanced air scrubbing and water recovery units to intercept residues or airborne particles that would otherwise require costly remediation. Continuous monitoring of stack emissions and effluent discharges isn’t just regulatory compliance—it’s our badge of operational discipline.

    We counsel our users on material handling improvements and support safe destruction or recycling of surplus stock. The chemical industry faces active pressure regarding persistent organic pollutants; we convene regular internal reviews to adapt to evolving best practices. These include transitioning to lower-energy distillation and solvent-free process steps where possible, without sacrificing the purity or functionality demanded by end users.

    Direct Manufacturer Insights: Usability and Support

    Working as a direct manufacturer provides a real-time window into the realities of storage, transfer, and on-site blending. We field questions about compatibility with production vessels, valve seals, and transfer pumping. Our technical specialists have visited user plants to review solutions against residual acid migration or exposure risks. These direct interactions guide our packaging decisions—always aiming for safe handling and minimum loss.

    Some clients need ultradry grades free from trace moisture, others seek material in lower melting formats for blending. By tailoring production cycles and packaging to the specifics of real industrial process flows, we build partnerships, not just transactions. Field visits have often led to process tweaks on our side—sometimes, tighter particle size distribution, other times, modifying the acidification step to minimize exotherm and provide more stable storage. These incremental improvements grow from years of listening and close cooperation across the supply chain.

    Why 11H-Perfluoroundecanoic Acid Continues to Set the Standard

    We understand from firsthand experience that performance always carries a margin set at the factory. The difference between a batch that works and one that outperforms often comes down to how it was made. In surface engineering, formulation chemistry, and advanced coatings, the drive for more durable performance means suppliers who can guarantee real quality gain loyal clients.

    Users return to 11H-Perfluoroundecanoic Acid for its unique chain length, reliable physical profile, and predictable chemical resistance. We see our role as more than bulk supply—we provide continuity and technical guidance that rides downstream into product quality, customer satisfaction, and compliance. Where other acids falter—instability under heat, unpredictable side reactions, or moisture pick-up—our product continues to deliver.

    Experience has shown us one truth: controlling the whole process, from raw materials through to packaging and delivery, means our customers receive a material they can count on. For those working at the edge of what’s possible with perfluorinated chemistry, nothing replaces close collaboration and the hands-on expertise of a dedicated manufacturer.