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HS Code |
525412 |
| Chemicalname | Cesium Fluoride |
| Chemicalformula | CsF |
| Molarmass | 151.90 g/mol |
| Appearance | White solid |
| Meltingpoint | 682 °C |
| Boilingpoint | 1,250 °C |
| Density | 4.115 g/cm³ |
| Solubilityinwater | Freely soluble |
| Casnumber | 13400-13-0 |
| Odor | Odorless |
| Refractiveindex | 1.484 |
| Ph | Alkaline (solution) |
| Storagetemperature | Room temperature |
| Ecnumber | 236-487-3 |
As an accredited Cesium Fluoride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Cesium Fluoride, 100g: Supplied in a sealed amber glass bottle with tamper-evident cap, labeled with hazard warnings and product details. |
| Shipping | Cesium Fluoride is shipped in tightly sealed containers made from compatible materials to prevent moisture absorption and contamination. It is categorized as a hazardous material and must be labeled appropriately. Transportation is typically via ground or air freight, following all relevant regulations for handling, storage, and documentation to ensure safety and compliance. |
| Storage | Cesium fluoride should be stored in a tightly sealed container, away from moisture, as it is highly hygroscopic. Keep it in a cool, dry, and well-ventilated area, separate from acids and incompatible substances. Store it in a designated corrosive materials cabinet, clearly labeled. Avoid exposure to air, as prolonged contact may cause it to absorb water and form corrosive solutions. |
Applications of Cesium Fluoride in Industrial ManufacturingAs a direct producer of Cesium Fluoride, we support advanced industrial customers with high-purity raw material for precise and regulated processes. Below, we detail verified downstream applications, with specific compliance, dosage, integration stages, and final product outputs for each manufacturing sector. 1. Pharmaceutical Active Ingredient SynthesisCesium Fluoride serves as a strong base and fluoride ion source in the nucleophilic fluorination steps of pharmaceutical API synthesis, particularly for introducing aryl- and alkyl-fluorine groups. Application includes reactions such as the halex process for fluorinated intermediates and Suzuki coupling modifications. Our product is used in multi-step organic synthesis where controlled purity directly impacts regulatory submission and batch validation. The manufacturing process requires careful adjustment of reactant ratios, and quality control procedures ensure residual salt removal prior to downstream processing. Industry compliance standards
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2. Electronic Substrate and Thin Film DepositionIn microelectronic manufacturing, Cesium Fluoride works as an additive in sputtering targets for alkali metal-based thin film formation and is used in photoemissive layer production for optoelectronic, OLED, and photovoltaic cells. Its unique ionic properties improve electron injection and facilitate crystallographic control in high-value device architectures. Consistent high-purity supply is essential, as impurity levels affect device lifetime and yield. The addition mechanism, concentration, and process temperatures are tightly regulated per substrate material. Industry compliance standards
Typical usage ratio
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3. Specialty Glass and Optical Fiber ManufacturingCesium Fluoride acts as a fluxing and modifying agent in gradient-index (GRIN) lenses, specialty infrared-transmitting glasses, and in precision-drawn optical fiber cores. The fluoride ion adjusts the refractive index and imparts increased IR-transparency and durability in high-end optical systems. Dosing is precisely controlled to achieve material homogeneity and prevent undesired crystallization during glass melt formation. All raw materials must meet strict low-impurity standards to ensure optical clarity and performance stability. Industry compliance standards
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4. Agrochemical and Fine Chemical CatalysisIn agrochemical synthesis, Cesium Fluoride is applied as a phase-transfer catalyst and as a fluoride source in selective fluorination reactions. It facilitates C-F bond formation under mild conditions, which is crucial for synthesizing herbicide and insecticide active ingredients with improved environmental stability. Dosing and process parameters vary with reactant profile, and strict control of byproduct formation is mandatory to comply with agrochemical formulation regulations. End users rely on batch Trace QC documentation and consistency of ionic content for downstream blending. Industry compliance standards
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5. Laboratory Scale Organic Synthesis (Reference Standards, R&D Intermediates)Cesium Fluoride sees extensive use in the synthesis of specialized organic compounds for analytical reference standards, radiolabeled tracers, and small-volume development projects. Its efficient solubility and strong base properties provide reproducible conditions for testing new synthetic routes, especially for molecules requiring high-purity fluorine introduction. Industrial laboratories require thorough documentation and batch traceability for all application runs. Customized packaging and purity levels suit internal or external method validation work. Industry compliance standards
Typical usage ratio
Downstream process integration
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Competitive Cesium Fluoride prices that fit your budget—flexible terms and customized quotes for every order.
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We spend thousands of hours every year developing and refining our approach to Cesium Fluoride. For those who work with it every day, this is no commodity item languishing on the shelves—it's an essential tool woven into the workings of various advanced chemical processes. Most buyers come looking for CsF with one question: will it do the job right, with the consistency and purity to keep my project or production line moving? On our production floor, this question stands above all others, guiding every batch and every step.
Let’s start with what we actually produce. Each crystal of Cesium Fluoride represents careful control, and over years of practice, we've built up a repetition—almost a muscle memory—for turning out a dry, white, free-flowing powder. Our standard grade runs at purity of 99.9% minimum, based on rigorous ICP and titration checks against trace alkali and halide residues. Particle size matters more than what many realize; agglomeration leads to headaches downstream, so we ensure a tight granularity profile for each lot. Packaging is another issue many users overlook, but moisture plays havoc with CsF, so we’ve invested in airtight, tamper-evident vessels that protect the material from pickup, right up until you’re ready to use it.
CsF doesn’t forgive mistakes. If you miss a step in drying or let a batch sit with trace humidity, you notice it later—sluggish reactions, strange by-products, or equipment fouling. Our methods draw from years of direct troubleshooting, not just textbook procedures. Every reactor, oven, and mill in our plant gets dedicated to fluoride processing; we keep cross-contamination away by scheduling work and running tight clean-out procedures. Assuring batch-to-batch reproducibility in fluorides means you must pay attention to the smallest detail.
It’s easy to read lists talking about how versatile alkali fluorides serve as reagents or intermediates. On our end, we’ve watched real problems get solved with the precise use of Cesium Fluoride. Chemists rely on it for halogen exchange reactions. The pivotal role comes through in nucleophilic fluorination, especially where other fluorides just won’t do due to lower solubility, stronger lattice energies, or the tendency to behave sluggishly in organic solvents. Cesium’s large ionic radius and comparatively high solubility give CsF that edge others can’t match.
A lot of our customers tackle ether cleavage, selective fluorodeprotection, or the introduction of fluorine into aromatic or heterocyclic systems. Cesium Fluoride does not act as a simple “plug-and-play” substitute for sodium or potassium fluoride. The difference in reactivity, the cleaner reactions, and the reduced formation of sticky by-products come as the result of real-world distinction in lattice energies and the way cesium ions interact with reaction media. Over decades, we see organic synthesis applications that have stalled with substitutes find new traction once switched to a high-purity, fine-grained batch of CsF.
Scaling these reactions beyond the bench to pilot and plant level brings in fresh sets of demands. Handling properties rank as priorities—clumping, static charge, and even minor contamination can derail entire syntheses. We tailor our drying and sieving processes specifically for labs and floor-scale customers, so that the entirety of each drum is usable, without the need for post-purchase rework.
Product spec sheets tell only a small part of the story. In our daily work, it’s the interplay between purity, particle size, and moisture content that dictates consistency. Every CsF container we ship out meets trace metal specifications for sodium, potassium, rubidium, calcium, magnesium, and heavy metals, validated by robust analytical runs. Meeting a number on a datasheet is simple, hitting the target so the end-user never sees process variability takes far more investment.
One issue chemists frequently encounter relates to “off-the-shelf” or commodity-grade alternatives. Water content higher than 0.5% often escapes notice in a rushed inspection, yet in use, it can fundamentally alter reaction outcomes. We run Karl Fischer testing for every lot, rejecting batches that don’t meet our internal spec for dryness. We’ve seen too many failed syntheses traced back to materials labeled as “dry” but carrying hidden loads of atmospheric water.
Another frequent pitfall comes from contamination at the point of packaging, especially with bagged or poorly-sealed alternatives sold through traders. Plasticizers, trace organics, or even environmental oils have ruined high-value product runs for some customers. Our containers stay sealed until use, using only fluoropolymer liners and inert sealing. Each approach comes not from a vendor mindset, but from the practical experience of what fails in a working plant or lab.
A lot of newcomers question if they really need Cesium Fluoride, given the price difference compared to more common alkali fluorides. The bulk of our orders stem from places where sodium or potassium fluoride simply don’t deliver. In regioselective fluorination, direct fluorination of highly activated aromatic systems, or where nonpolar solvents are required, K+ and Na+ ions don’t have the right fit. Cesium ions are less likely to disrupt sensitive organic frameworks, giving better selectivity and, often, improved functional group tolerance.
We’ve had customers who grew frustrated with KHF2 or even tetrabutylammonium fluoride, facing side reactions or decomposition products that made purification a nightmare. Our CsF, with its clean reactivity and absence of amine bases or hydrated intermediates, lets those same teams finally push reactions to high yields. The ability to run at room temperature, amid demanding substrate loads, has helped scale up numerous products in the fine chemicals and pharmaceutical sectors.
The solubility of Cesium Fluoride in both water and a wide spread of organic solvents widens its application window. It does not easily produce gel phases nor bind up catalytically active centers the way potassium does in some ligand-assisted reactions. These are things we have seen firsthand, not claims repeated from secondary materials.
Handling safety remains a theme we emphasize to every buyer. Cesium compounds require care and containment. Our processes include continuous hazard analysis, monitoring for airborne particle release, and inline safety devices to keep both our staff and downstream users safe. We always recommend customers maintain proper ventilation, and keep the material dry and isolated until use, supported by our own decades working directly with the substance.
Some of the most interesting projects we've supplied start with a request for CsF in segments well beyond “standard” lab use. We’ve provided tailored lots for industries spanning pharmaceuticals, electronics, analytical chemistry, and glass manufacturing—each with its own quirks. Certain pharma projects exploit the uniquely mild fluorination powers CsF offers, introducing fluorine into challenging positions where milder reagents won’t operate cleanly. Cesium Fluoride’s high lattice energy and polarizability help activate otherwise unreactive halides.
On the analytical side, CsF finds its role in sample preparation, especially for trace element analysis. Its avidity for water, and its strong basicity, assist in liberating tightly bound ions in geological and biological matrices, granting cleaner measurement. Over the years, some customers learned the hard way not to substitute lower grades, as instrument fouling and unpredictable backgrounds soon followed.
CsF works as a source of fluoride ion in specialty glass and ceramic formulations, imparting unique optical properties, lowering melting points, and increasing resistance to chemical and thermal attack. In these processes, purity challenges become paramount—trace impurity changes refractive index or leads to phase separation in the finished piece.
We also supply partners working in catalysis, where certain palladium-catalyzed coupling reactions lean heavily on the unique reactivity profile of cesium salts. Several modern cross-coupling strategies, like Suzuki and Stille-type couplings, depend on a precise balance of ionic strength, solubility, and minimal by-product formation—criteria that our CsF, through decades of refinement and feedback, is specifically produced to meet.
The last few years brought clear reminders of how vulnerable chemical supply chains can be, with shocks in specialty alkali markets revealing weak points both up- and downstream. Cesium ore remains a rare resource; refining quality product from imported ore calls for specialized equipment, skilled operators, and the ability to adapt batch processes to the nuances of variable feedstock. Each batch starts days before the final product comes off the drying line.
We don’t rely on “spot” buys or short-term material brokers. Every kilogram we ship stems from raw material traced to reliable, long-term partners, using purification steps honed over years of tight collaboration. During global shortages or price spikes, we adjusted batch sizes and production scheduling, sometimes running overtime to ensure continuity for research and production customers reliant on ongoing supply. Weather, logistics delays, shifts in mining output—all these hit specialty chemicals far harder than commodity chlorides or sulfates.
Many of our clients now expect direct feedback and rapid troubleshooting help. We maintain staff trained not just in manufacture, but in bench-scale reaction support. If customers experience trouble—be it unusual color, texture, or performance in synthesis—we pull samples and run side-by-side checks in our own application labs, matching conditions and helping trace the root cause of any issue. This constant dialogue has returned practical improvements that textbooks simply don’t teach.
Solving application problems forms the backbone of our daily operation. On more occasions than we can count, customers report issues like “slow or incomplete reaction,” “unexpected halide content,” or “clumping in dry-box storage.” The answers almost always lie in the details: grind profile, handling at the packing line, or recovery of atmosphere-exposed bottles. We walk through storage, weighing, and addition techniques alongside our users, sharing what works and what fails from a production mindset.
The industry never stands still. As analytical requirements tighten and downstream regulations increase, we’ve had to revalidate aspects of our purification and packaging. Our in-house scientists review lot release certificates, compare ICP-MS and ion chromatography findings, and adjust as customer demands evolve.
Shipping regulations also demand careful navigation. Whether moving cargo across borders or shipping direct to sensitive locations, compliance with local hazards guidance, labeling, and packaging standards sits baked into each day’s dispatch. Lessons picked up from decades on the ground matter far more than generic paper specs.
There’s no magic formula. Manufacturing Cesium Fluoride that delivers on its promise comes down to a blend of experience, technical expertise, and constant listening to customers who push the boundaries of what’s possible in the lab or plant. Batch reproducibility, proven dryness, trusted packaging, and direct answers to application questions—these stand as our calling cards, not just for us, but as a challenge to every seller in the market.
We know that, at the molecular level, there’s little room for error. A decade’s worth of incremental process improvements now helps dozens of industries cut costs, eliminate failure points, and fast-track scale-up. Tough customer demands—say, for sub-ppm alkali exclusion, or extreme dryness—aren’t hurdles but signals to innovate, refine, and grow.
Our story, etched in each kilogram of Cesium Fluoride we ship, reflects both the unglamorous reality of industrial chemistry and the quiet pride that comes from enabling breakthroughs in fields spanning drug discovery, new materials, and analytical science.
In today’s world, chemists and companies cannot afford interruption, uncertainty, or unexplained variability. Working directly with those who produce what they sell closes the gap between problems in the field and responses at the source. Every adjustment in raw input, every improvement in drying kinetics or packaging method, came through the back-and-forth of supplier and user, of manufacturer and innovator.
We look forward to every new project, every technical challenge, and every opportunity for collaboration. Our team stands committed not just to the delivery of Cesium Fluoride, but to the partnership and trust it represents. Each shipment carries more than a product—it carries decades of practical know-how, pride in craft, and respect for the end-user’s critical goals. This is how manufacturing shapes not only a product, but the ongoing progress of science and industry.