|
HS Code |
533413 |
| Chemicalname | Anhydrous Hydrofluoric Acid |
| Chemicalformula | HF |
| Casnumber | 7664-39-3 |
| Molarmass | 20.01 g/mol |
| Appearance | Colorless, fuming liquid or gas |
| Odor | Pungent, irritating |
| Meltingpoint | -83.6 °C |
| Boilingpoint | 19.5 °C |
| Density | 0.991 g/cm³ at 25 °C |
| Solubilityinwater | Miscible |
| Vaporpressure | 880 mmHg at 25 °C |
| Ph | <1 (in aqueous solution) |
| Flammability | Non-flammable |
| Corrosivity | Extremely corrosive |
| Unnumber | 1052 |
As an accredited Anhydrous Hydrofluoric Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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Purity 99.9%: Anhydrous Hydrofluoric Acid with purity 99.9% is used in semiconductor wafer etching, where it achieves precise silicon dioxide layer removal. Stability Temperature 300°C: Anhydrous Hydrofluoric Acid with a stability temperature of 300°C is used in high-temperature glass etching, where it ensures consistent reaction rates and minimal decomposition. Concentration 70%: Anhydrous Hydrofluoric Acid at 70% concentration is used in stainless steel pickling, where it delivers rapid oxide scale removal and uniform surface finish. Molecular Weight 20.01 g/mol: Anhydrous Hydrofluoric Acid with molecular weight 20.01 g/mol is used in fluorination reactions for organofluorine compound synthesis, where it enables targeted C-F bond formation. Low Water Content <0.5%: Anhydrous Hydrofluoric Acid with water content less than 0.5% is used in anhydrous fluorination of hydrocarbons, where it prevents unwanted side reactions and maximizes yield. Boiling Point 19.5°C: Anhydrous Hydrofluoric Acid with a boiling point of 19.5°C is used in catalyst preparation for petroleum alkylation processes, where it permits vapor phase handling and precise dosing. |
| Packing | Anhydrous Hydrofluoric Acid is packaged in 50-liter corrosion-resistant steel cylinders with robust valve protection, labeled with hazard warnings and handling instructions. |
| Container Loading (20′ FCL) | 20′ FCL containers hold approximately 14.4MT of Anhydrous Hydrofluoric Acid, packaged in ISO tanks with proper hazardous material labeling. |
| Shipping | Anhydrous Hydrofluoric Acid must be shipped in tightly sealed, corrosion-resistant containers, such as steel cylinders with PTFE linings. It requires proper labeling as a highly toxic and corrosive substance. Transport is regulated under hazardous materials protocols, with documentation and emergency response instructions. Only trained personnel should handle shipping and receiving. |
| Storage | Anhydrous hydrofluoric acid should be stored in tightly sealed containers made of compatible materials such as polyethylene or Teflon, never glass. The storage area must be cool, dry, well-ventilated, and separated from incompatible substances. Secondary containment is advised to prevent leaks or spills. Proper labeling, restricted access, and readily available emergency equipment, such as calcium gluconate gel, are essential for safety. |
| Shelf Life | Anhydrous hydrofluoric acid typically has an indefinite shelf life if stored properly in tightly sealed containers made of compatible materials. |
Competitive Anhydrous Hydrofluoric Acid prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to sales3@ascent-chem.com.
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Manufacturing anhydrous hydrofluoric acid means working every day with one of the most unique and challenging chemicals known to industry. At our plant, we don’t just move a liquid from point A to point B—we stabilize, purify, and package a volatile compound that finds its way into advanced industrial processes. Over decades of production, we’ve learned the character of this acid down to its smallest detail. This understanding shapes how we ensure quality at every step, how we troubleshoot every fluctuation, and how we create a material capable of meeting the most rigorous demands.
Anhydrous hydrofluoric acid, or HF, stands apart for its extreme reactivity and its ability to dissolve glass, metals, and oxides. It shows its true power in high-precision manufacturing, especially where water content cannot be tolerated. Our product is produced to reach a typical purity of 99.9 percent HF, with moisture levels managed under the tightest controls. Each lot is monitored for trace impurities and metallic content, using analytical methods our chemists have refined through years of hands-on work.
Real-world feedback shapes our approach as much as any published standard. In the semiconductor sector, trace contaminants can cripple an entire line. In petrochemicals, unpredictably high water content skews catalyst performance. In fluoropolymer production, impurities lead to batch inconsistencies and sometimes outright rejection. We keep these industries running reliably by tuning our production process to prevent corrosion, avoid contamination, and maintain a tight specification window.
Producing anhydrous hydrofluoric acid means starting with pure raw materials and equipment designed to withstand relentless exposure to a chemical that attacks glass and almost every common metal. Only a handful of alloys and plastics can hold up, so we invest heavily in nickel and Monel vessels, PTFE-lined transfer lines, and custom-engineered valves. Even a single flawed weld or overlooked valve seal can mean the difference between a safe operation and an emergency shutdown.
Our distillation steps remove both water and volatile impurities, pulling off the HF vapor and condensing it in ultra-clean, leak-monitored tanks. During packaging, operations run under strict exclusion of moisture. Each part of the system is checked for leaks using real-time monitoring. Employees train under supervision for months to learn these protocols, drawing on years of experience from supervisors who’ve spent a lifetime working hands-on with this compound.
From bulk tankers to cylinder-sized containers, filling and storage involve careful sequencing and constant vigilance. We test for residual moisture and trace contaminants before, during, and after filling. Any deviation is traced, contained, and investigated before product release. We keep redundant safety backups and regularly drill emergency scenarios with local first responders, having learned it’s better to practice prevention than manage incidents.
Users rarely realize the reach hydrofluoric acid has in modern life. In our own experience, the most visible end uses include etching advanced microcircuits for computers, cleaning refinery catalysts, and enabling the chemistry of refrigerants and fluoropolymers. For these applications, the anhydrous form—free of water—offers critical benefits.
For the microelectronics field, water represents both a contaminant and a threat to doping processes and endpoint uniformity. Our customers see yield losses of double-digit percentages if their HF supply strays even slightly off-spec. They depend on us to deliver not only purity, but also unwavering batch-to-batch consistency.
Fluoropolymer manufacturers turn to anhydrous HF for creating monomers such as tetrafluoroethylene and hexafluoropropylene, building blocks for PTFE and FEP. Here, introducing as little as a few ppm of moisture can cause violent reactions or create heavy ends that foul process equipment. Our teams work side-by-side with polymer production engineers, logging years of process knowledge so every delivery lines up with customer timelines and quality requirements.
In petroleum alkylation, hydrofluoric acid stands at the core of producing high-octane gasoline blends. It acts as a catalyst in processes requiring absence of water to avoid side-reactions and to control corrosion. A single percentage point of excess water causes unnecessary equipment wear or misshapen product mixtures. Through close communication with refinery engineers, we adjust delivery timing and product conditioning based on site-specific storage and transfer methods.
Beyond these, smaller volume users include laboratory R&D centers, specialty inorganic manufacturers, and niche etching operations for glassware and optics. We work directly with these customers to match supply with their safety systems and application methods because we know firsthand the risks that come from mismanaging storage or handling protocols.
No amount of data from a textbook or lab bench can replace hands-on experience with anhydrous HF. In our factories, PPE standards go far beyond basic compliance: full-face respirators, positive-pressure suits, extensive emergency showers, and remote handling tools are standard kit. Those who work with us quickly learn the importance of double-checking seals, test-firing neutralization showers weekly, and never treating routine as truly routine.
Our experience shows that incidents don’t start with big errors—often a forgotten gasket, a fatigued flange, or a single unwiped drip is all it takes. We have seen those moments, built new checks around them, and shared lessons learned with our industry partners. Only through constant vigilance and honest reporting do safety records improve.
Each year, as regulations shift, we bring in outside experts, review stacking changes in global and regional law, and invest in technical upgrades to stay ahead. Some think this is just about ticking boxes, but real-life consequences tell a different story. We’ve found that effective safety starts with culture: hiring careful operators, checking each other’s work, and encouraging reporting at any sign of deviation, no matter how small. These approaches become our way of life, not just a procedure on paper.
Longtime users know there’s no direct substitute for anhydrous HF in certain applications. Many industry newcomers, though, mix up anhydrous and aqueous forms, thinking they’re interchangeable. Our experience says otherwise.
Aqueous HF, available at concentrations like 40 percent and 70 percent, suits applications that tolerate some water in the final process. While much easier to store, ship, and handle, aqueous forms come at a cost when absolute dryness matters. Silicon wafer makers report batch defects when water traces carry over. Refiners face extra corrosion or side reactions. Even a small increase in water content can have consequences that build up over time.
Some users inquire whether dry alternatives, like solid fluorides or anhydrous fluoride salts, can fill the gap. In reality, reactivity profiles, purity levels, and physical handling demands rarely match what anhydrous HF can provide. Where high-reactivity fluorination is needed, only pure, dry HF delivers the right combination of volatility, strength, and compatibility.
In comparisons, our customers see a difference in throughput, final product specifications, and operating costs. We work together to assess system compatibility, drawing on our years of troubleshooting mixed-feed situations. Some of our most challenging projects have involved converting an operation from aqueous to anhydrous HF—upgrading valves and tanks, retraining staff, and fine-tuning every sensor along the line. Each time, the lesson is clear: proper investment in materials and processes pays off in productivity and lower unplanned downtime.
Anyone can list a purity number or flash a specification sheet. Years in this field have taught us the buyers who make the biggest impact—those in front-line manufacturing, field maintenance, and process troubleshooting—demand more. We share not just product analysis, but the manufacturing processes, attention to detail, and record-keeping that make consistent outcomes possible.
We encourage qualified buyers to inspect our facilities, audit our analytical processes, and review our traceability records. Customers who have spent time on our factory floors quickly realize the number on the label only tells part of the story. Every shipment draws from thousands of operational decisions, daily checkpoints, and, sometimes, hard lessons learned from the field. In the rare case of a shipment deviation or anomaly, we review root causes with the customer side-by-side, including action logs and raw data, so both teams understand what really happened and how to prevent it in the future.
This approach grows out of our backgrounds as engineers, operators, and chemists. People on our teams have run pilot units, responded to emergency shutdowns, pulled samples from production lines, sweated through plant upgrades, and learned from the unexpected. Open conversation with customers prevents small problems from becoming incidents and sustains trust when challenging issues arise.
Each production cycle brings reminders of why standards matter. Filtrations slow down, distillation columns show fouling, and analytical results indicate drift faster when even small changes slip through. Never-ending improvements in our procedures come from walking the floor, troubleshooting recurring issues, and listening closely to operators who see problems before they show in a report. Technology brings new monitors, sensors, and automation, but the skill of the people making real-time decisions remains at the core.
In recent years, industry demand for ultra-high purity HF has climbed, not just for Silicon Valley but for global pharmaceuticals and specialty chemical manufacturers. We meet these needs through process intensification—adding more steps, better filtration, tighter sampling intervals, and new online detection. Our teams review global best practices, join industry working groups, and collaborate with experts in corrosion, analytical chemistry, and regulatory compliance, making sure our output aligns with evolving end-use requirements.
Data exchange with long-term customers shapes improvements. Example: we upgraded our holding tank coating protocols after a batch of analysis revealed previously undetected trace metals leaching in regions subject to thermal stress. The customer supplied field samples, we ran side-by-side pilot tests, and both sides improved as a result. These experiences reveal real-world complexity behind what otherwise looks like a simple liquid in a drum.
We believe the future of anhydrous HF manufacturing rides on continued investment in people and facilities. Our apprentices shadow senior operators before they even set foot on live HF systems, learning every step through hands-on training. Veteran engineers mentor new chemists in trouble spots and subtle process adjustments, passing down years of practical know-how.
We continually renew protective equipment, audit every step for environmental impact, and retrofit plant sections to improve both yield and safety. Regulatory compliance forms just one baseline; real-world testing and incident prevention come through active engagement and readiness to innovate.
We maintain direct relationships with specialty suppliers of parts and materials, recognizing that standard off-the-shelf fittings rarely stand up to HF’s unique demands. When failures happen, our teams investigate both internally and with suppliers, collaborating until issues are fully resolved. Only by maintaining these links in the supply chain do we avoid repeat mistakes.
For the next decade, we see even more demand for tighter purity, smaller batch sizes, and custom packaging. Customers need not just specification met but expertise that anticipates their process evolution and global market changes. We take pride in adapting our systems to meet these needs, with an eye toward both safety and reliability.
The world is changing, and with it the needs of companies relying on anhydrous hydrofluoric acid. Stringent environmental rules, tighter customer specs, and the rise of advanced manufacturing all push the limits of chemistry and logistics. Our plant sits at the intersection of tradition and modernization, drawing from deep hands-on knowledge as we adopt smarter controls and lean processes.
Day-to-day, the job comes down to recognizing that no two shipments are truly alike—each vessel, operator, and receiving site has its own challenges and constraints. By staying closely involved, responding proactively to customer concerns, and training each new generation, we do more than simply deliver a product. We help customers manage risk, move forward with confidence, and innovate in fields as varied as electronics, energy, and specialty chemicals.
Anhydrous hydrofluoric acid acts as a linchpin in so many vital processes, but the work of producing and supplying it safely requires teamwork, vigilance, and honesty. Everyone who walks through our plant gates understands the stakes, and that commitment carries through every barrel, cylinder, and container we produce. It’s not a job for everyone—but after decades in this business, we know the difference it makes.