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Potassium Fluoride Dihydrate

    • Product Name Potassium Fluoride Dihydrate
    • Alias KF·2H₂O
    • Einecs 246-921-7
    • 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
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    786436

    Chemicalname Potassium Fluoride Dihydrate
    Casnumber 7789-41-5
    Molecularformula KF·2H2O
    Molarmass 112.14 g/mol
    Physicalstate Solid
    Color White
    Odor Odorless
    Solubilityinwater Very soluble
    Meltingpoint 41°C (dihydrate)
    Density 2.36 g/cm³
    Ph ~8-9 (5% solution)
    Boilingpoint Decomposes before boiling
    Hazardclass Toxic, Corrosive
    Storageconditions Store in a tightly closed container, dry and cool place
    Synonyms Fluorure de potassium dihydraté

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

    Packing & Storage
    Packing White, high-density polyethylene bottle containing 500g of Potassium Fluoride Dihydrate, tightly sealed with a tamper-evident cap and hazard labeling.
    Shipping Potassium Fluoride Dihydrate should be shipped in tightly sealed containers, protected from moisture and incompatible materials. It is classified as hazardous and requires labeling according to regulatory guidelines. Transport must follow UN 1812 protocols, ensuring secure packaging and proper documentation to prevent exposure, environmental contamination, and compliance with safety regulations.
    Storage Potassium Fluoride Dihydrate should be stored in a tightly sealed container, away from moisture, acids, and incompatible substances. Keep in a cool, dry, well-ventilated area, protected from light and humidity. Store separately from food and drink. Properly label the container and ensure access is restricted to trained personnel, following all applicable safety and regulatory guidelines.
    Application of Potassium Fluoride Dihydrate

    Applications of Potassium Fluoride Dihydrate in Industrial Manufacturing

    As a direct manufacturer of Potassium Fluoride Dihydrate, we supply material to a range of high-tech industrial sectors that require exacting chemical performance and regulatory adherence. Our expertise supports key downstream applications with controlled purity, precise grading, and batch consistency to meet the demands of modern processing environments.

    1. Fluorination Agent in Organic Synthesis and Fine Chemicals

    In pharmaceutical and agrochemical intermediate production, downstream formulators use potassium fluoride dihydrate for the selective introduction of fluorine atoms into aromatic or aliphatic compounds. Its high solubility increases reaction efficiency during nucleophilic substitution and provides an alternative to harsher fluorinating reagents. Exact moisture content is critical to managing reaction kinetics and avoiding side-products. Custom particle size grades support both batch and continuous systems.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • US FDA 21 CFR Part 211 (for pharmaceutical production environment)
    • REACH registration for chemical safety compliance in the EU
    • Chinese Pharmacopoeia (when applicable for local production standards)

    Typical usage ratio

    • 0.8–3.5 molar equivalents relative to substrate, adjusted for reaction temperature and desired fluorination level

    Downstream process integration

    • Charged directly into stirred tank or flow reactors after substrate charging
    • Incorporated during intermediate synthesis prior to purification or crystallization

    Final product types

    • Fluorinated pharmaceutical intermediates (active or side-chain building blocks)
    • Plant protection agents with fluorinated aromatic rings
    • Performance fine chemicals for electronics and high-performance polymers
    • Specialty fluorinated reagents for custom organic synthesis

    2. Glass Etching and Surface Treatment for Electronics Manufacturing

    Fabricators depend on potassium fluoride dihydrate as a mild etchant and surface modifier in precision glass and quartz processing, particularly in the electronics and display sectors. Its controlled reactivity enables manufacturers to achieve specific surface roughness and micro-patterning required for LCD, semiconductor, and solar panel substrates without causing excessive corrosion or micro-cracks. Stringent impurity control and low iron content grades are favored for technical glass with high optical clarity.

    Industry compliance standards

    • IEC 61215 (for photovoltaic module components, when applicable)
    • IPC-A-600/6012 (acceptability of printed circuit boards and glass supports)
    • ISO 9001:2015 process controls for electronics manufacturing
    • Analysis under RoHS Directive (2011/65/EU) for heavy metals in downstream electronics

    Typical usage ratio

    • Prepared as 2–10% w/v aqueous solution for immersion or spray-on application, concentration adjusted based on required etch rate

    Downstream process integration

    • Dosed into inline or batch etch tanks following degreasing/cleaning cycles
    • Used in combination with other fluoride salts for multistep etching lines

    Final product types

    • LCD and flat panel display glass substrates
    • Photovoltaic solar panel glass with anti-reflective micro-structuring
    • Quartz and borosilicate glass for semiconductor lithography masks
    • Optical components for sensor or imaging technologies

    3. Flux in Aluminum and Magnesium Metal Processing

    Primary and secondary aluminum casthouses rely on potassium fluoride dihydrate as a fluxing agent to reduce melting point and promote the coalescence of metal droplets. Magnesium and specialty alloy makers also utilize this material to modify oxide film structure and facilitate impurity separation during molten metal treatment. Strict moisture control and low sodium impurity are essential to preserve alloy quality for critical transportation and aerospace applications.

    Industry compliance standards

    • ASTM B92/B93 for aluminum alloy castings
    • SAE AMS specifications for aerospace aluminum and magnesium alloys
    • ISO 9001:2015 certified quality control for foundry operations
    • Environmental management under ISO 14001 (for effluent and dust handling)

    Typical usage ratio

    • 0.5–2.5% of total melt weight for aluminum and magnesium alloy refining, adjusted based on oxide load and alloy composition

    Downstream process integration

    • Added to molten metal at fluxing stage using mechanical feeders or manual charging
    • Blended with other fluxes depending on casting system and alloy requirements

    Final product types

    • High-purity aluminum ingots for electronics and packaging
    • Magnesium alloy die-cast automotive parts
    • Aluminum billets for extrusion and rolling
    • Aerospace-grade semifinished products

    4. Catalytic Promoter in Specialty Catalysts Synthesis

    Catalyst manufacturers employ potassium fluoride dihydrate as a promoter or activator in the development of fluoride-supported catalyst systems. It enhances activity for hydrogenation, isomerization, and selective oxidation reactions in petrochemical processing and fine chemical production. Controlled particle sizing and defined hydration states contribute to reproducible catalyst structures with targeted loading. Proprietary blending methods support dispersion on alumina or silica supports without structural collapse.

    Industry compliance standards

    • ISO 9001:2015 certified QC for catalyst development
    • Environmental monitoring per local chemical handling regulations (e.g., EU CLP Regulation, China MEE)
    • Compliance with end-user’s refinery or petrochemical feedstock specifications
    • Responsible Care certification for safe fluorine handling and disposal

    Typical usage ratio

    • 1.0–7.5 wt% relative to total dry catalyst mass, optimized based on desired surface fluoride density

    Downstream process integration

    • Impregnated onto carrier substrates during catalyst slurry preparation
    • Applied via dry blending prior to calcination or thermal activation steps

    Final product types

    • Hydrogenation and isomerization catalysts for refinery process units
    • Oxidation catalysts for fine chemicals and commodity monomer production
    • Dehydrohalogenation catalyst pellets
    • Specialty catalyst formulations for custom chemical synthesis plants

    5. Cleaning and Pickling Chemical for Metal Surface Preparation

    Industrial metal fabricators use potassium fluoride dihydrate in complex cleaning and pickling formulations to remove oxide layers and scale from stainless steel, titanium, and specialty alloy surfaces prior to plating, welding, or further processing. The material provides consistent fluoride concentration needed for controlled etch depth, without excessive attack on base metal. Combined with acids, it offers enhanced cleaning effectiveness and surface passivation, critical for high-purity and food-contact equipment.

    Industry compliance standards

    • ASTM A967 (passivation of stainless steel parts)
    • EN 10348 (pickling requirements for stainless steels)
    • US FDA 21 CFR 178.3570 (for surfaces in food contact service, equipment cleaning)
    • REACH and OSHA chemical handling compliance

    Typical usage ratio

    • 2–6% w/w in mixed acid solutions, dependent on alloy type, oxide thickness, and processing time

    Downstream process integration

    • Added to acid pickling baths after dilution and neutralization control
    • Used in pre-treatment lines before electroplating or welding operations

    Final product types

    • Food-grade processing equipment
    • Welded stainless steel piping and tanks
    • Precision components for medical and pharmaceutical industries
    • Electroplated decorative or corrosion-resistant metal goods

    6. Raw Material for Inorganic Fluoride Production

    Producers of specialty inorganic fluorides depend on potassium fluoride dihydrate as a reliable precursor for synthesizing potassium bifluoride, cryolite, and other value-added fluoride chemicals. Accurate hydration and purity grades ensure complete conversion and minimize downstream purification burdens. Closed handling and strict lot testing help meet demanding customer specs in the glass, abrasive, and foundry chemical markets.

    Industry compliance standards

    • ISO 9001:2015 controlled batch manufacturing and traceability
    • REACH pre-registration for substance tracking in the EU
    • GOST standards (for clients in CIS markets)
    • Environmental reporting per regional and national requirements

    Typical usage ratio

    • Stoichiometric or slight excess relative to target fluoride yield, typically 1.0–1.2 molar ratio

    Downstream process integration

    • Dispersed into reactors for metathesis or acid neutralization steps
    • Blended with other alkali metal salts for tailored system compositions

    Final product types

    • Potassium bifluoride (KHF2) for plating and glass etching chemicals
    • Cryolite (Na3AlF6) for aluminum smelting electrolytes
    • Potassium titanate and other specialty fluorides for ceramic and abrasive markets
    • Custom fluoride salts for specialty chemical portfolios
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    Certification & Compliance
    More Introduction

    Understanding and Working With Potassium Fluoride Dihydrate

    What Potassium Fluoride Dihydrate Really Offers

    Every day in the manufacturing business, practical value and precise results matter. Potassium Fluoride Dihydrate, produced under strict supervision in our controlled environment, supports a range of chemical processes for both established applications and research projects. Over the years, our team has handled its entire lifecycle, from raw material sourcing to finished product packaging, and the feedback from colleagues using it in the field has shaped our approach to every batch.

    We designate this compound under the model KF•2H2O, with a chemical formula KHF2O. In our plant, we aim for a typical assay of 98% or higher, checked by in-house lab technicians on each release. Each lot receives checks on both potassium and fluoride content because this is where predictable performance starts. Water content remains critical, so we control humidity and temperature throughout the crystallization and packaging stages to ensure dihydrate rather than anhydrous or mixed hydrates. The dihydrate form, compared to the more reactive anhydrous version, handles with less dusting and reduced risk for airborne exposure. When a customer needs a process that requires lower reactivity—such as a slow fluoride ion release in glass frosting or organic synthesis—the water molecules present offer a tangible benefit.

    Differences Seen in Day-to-Day Use

    Many chemists talk about potassium fluoride in generic terms, but rarely address how subtle differences in hydration shift outcomes during scale-up or laboratory work. In the refinery and glass industries, teams have tested both the dihydrate and anhydrous forms side by side. The dihydrate has consistently shown a slower, more manageable release of fluoride ions, minimizing reaction spikes and providing more control during etching or surface modification. Several glassworks technicians have reported fewer process interruptions and a more uniform matt effect when using the two-water version. It’s not just about chemical formulas—practical handling makes the biggest impact.

    During the cold months, the water content helps reduce the risk of inhalation incidents compared to anhydrous dust, which becomes airborne easily and creates respiratory hazards. Handling feedback pointed out that dihydrate granules maintain their shape and flow in much the same way as common salts we use in other processing lines, and pallet shrink-wrapping prevents clumping without the need for excessive anti-caking additives.

    Beyond comfort and safety, the controlled hydration modifies reactivity in certain fluorination steps. Organic chemists have reported that side reactions—often a problem with anhydrous or impure sources—taper off with the dihydrate, translating into more reliable yields and easier post-processing. Our technical group continues to track these performance trends, maintaining ongoing dialogue with field operators to gather the kind of firsthand data that never appears on safety data sheets.

    Responsible Production: A Direct Perspective

    Looking at environmental and workplace safety laws, carrying responsibility starts on the manufacturing floor. Our batch reactors, made of specially lined steel, confine the highly corrosive intermediate steps of potassium fluoride synthesis. Vapors from the initial neutralization step get trapped, scrubbed, and recycled, keeping fluoride emissions below government limits and preventing accidental discharge into local water supplies. Each year, audit teams run simulated emergency scenarios and spot inspections, and any issues get addressed without delay.

    The processing team recognizes that supply chain weaknesses usually don’t show up until a problem arrives. For example, securing high quality hydrofluoric acid—an essential input—has become challenging as more countries tighten exports for security and environmental reasons. We routinely run risk assessments to maintain steady stocks, seeking partners with reliable compliance histories. These logistical decisions shape every day's work on the ground, not just in abstract policy rooms.

    Because of the reactive nature of fluoride compounds, spills remain rare but not impossible. Maintenance technicians received training not only in safe response but in early detection of faulty valves or over-pressurized drums. Regularly scheduled equipment replacements and thorough process reviews reduce the risk of workplace accidents. Each successful year without a reportable spill or exposure supports a culture of vigilance and pride. These realities separate the experiences of real manufacturers from those who only move product on paper.

    How Potassium Fluoride Dihydrate Finds Its Place in Industry

    The story of this product begins with hydrofluoric acid neutralized by potassium carbonate or hydroxide in well-sealed reactors. This direct, carefully monitored approach sets the foundation for reliable quality. Our clients primarily use the resulting dihydrate in glass etching, organic fluorination, metal surface treatment, and select pharmaceutical synthesis steps.

    In glass etching processes, the compound’s water of crystallization moderates reactivity, allowing artists and production engineers to produce clear, frosted motifs without aggressive pitting or uneven textures. During trials, glass technicians noted that anhydrous KF created frosted lines too rapidly, reducing fine detail. The controlled composition of our dihydrate lets workers complete batch runs with less rework and greater clarity in etched patterns.

    Organic chemists often describe potassium fluoride as the “go-to” catalyst or fluorinating agent in Swan and Balz–Schiemann reactions. In these settings, the dihydrate’s slightly milder profile offers a practical safeguard against runaway exothermic conditions, especially on multi-liter runs favored by contract synthesis labs. Several scale-up chemists in pharmaceutical pilot facilities have pulled us into on-site problem-solving, bringing samples back to our lab to compare against their imported or distributor-sourced alternatives. The result: more predictable fluorination, less charred product, fewer failed batches.

    In the cleaning and treatment of metal surfaces, especially aluminum, the choice of compound affects downstream quality. Dihydrate’s finer control during fluoride addition helps avoid excessive corrosion, protecting both finished goods and worker safety. In the hands of experienced operators, the reduced dust and improved granule stability matter as much as chemical purity. Feedback highlights less floating dust in the air and reduced “slippery” residue near mixing stations, improving footing and working conditions.

    Quality Practices and Traceability

    Over time, buyers and end-users have become more sophisticated. Requests for batch documentation, impurity profiles, and process validation have moved from rare to routine. To meet these demands, we do more than generic batch tests. Each outgoing lot receives a certificate built on multiple sampling points—start, middle, and end of each packing run—ensuring that product throughout each drum stays within the declared range. Occasional requests for lower sodium content or special sieving are common, and we built the flexibility into our workflow. Rather than creating a one-size-fits-all product line, we work with production and compliance staff to adapt without sacrificing purity or overall response consistency.

    In every container, our team seals each batch and logs the tracking data directly into a digital ledger, accessible for both in-house review and external audits. Customers in pharmaceuticals and fine chemicals require this level of transparency. Our laboratory team stores samples from each production lot and keeps them on file for several years. Should a downstream process yield unexpected results, we can provide retained samples within hours, helping technical support diagnose root causes quickly.

    The physical form, chiefly as off-white crystalline granules, also impacts plant uptime and waste generation. We avoid milling the product into excessive dust, keeping particle size in a practical working window. Employees use automated filling lines to minimize human exposure and cross-contamination. We find that hands-on attention to these production details brings feedback from buyers who have dealt with inconsistent imports or poor handling elsewhere.

    The Human Element in Product Handling and Support

    As manufacturing veterans, we’ve noticed that support doesn’t stop once a drum leaves the loading dock. Machine operators, plant supervisors, and laboratory staff reach out about questions ranging from storage concerns to unplanned clumping during prolonged shipments. In warmer climates, some customers experienced mild caking if left open too long, prompting packaging tweaks and suggested best practices.

    Early on, several small-scale labs struggled with disposal and neutralization of waste containing fluoride. Our safety engineers developed clear, operation-specific disposal guides, walking through the methods for safe neutralization and passing quarterly updates to clients. Several times a year, clients send their staff for hands-on training at our site, learning the difference between handling the dihydrate and the more volatile anhydrous powder. We recognize that written instructions rarely convey the subtleties that arise during real processes—demonstrations remove this gap.

    Regular communication with our longtime partners led to packaging updates. We moved from single-layer bags to reinforced, multi-layer liners, not only for better containment but also to reduce unintended moisture take-up during overseas shipping. Some buyers asked for smaller drums to ease storage in tight laboratories, and our fill lines adapted to this request. We now ship shipments from 1kg packs for bench chemists up to 1000kg bags sought by glass factories.

    Sustainability and Regulation: More Than Compliance

    In recent years, a central concern has been alignment with evolving environmental and workplace safety expectations. National and local authorities continue to update guidelines for tracking, storage, and waste discharge. We maintain an active dialogue with regulatory bodies, sometimes adapting practices not just to reach the current baseline but to anticipate future revisions.

    Our plant workers monitor emissions and water discharge in real time, correcting process imbalances before they rise to reportable levels. Site visits from authorities are routine rather than disruptive, as we run internal compliance protocols to catch problems on our own schedule. Technical staff participate in national chemical industry associations and training councils. Our participation generates early insight into upcoming changes and allows our process engineers to design around new requirements before they become legal obligations.

    Waste minimization shaped how our potassium fluoride dihydrate unit operates. Over a decade, recycling strategies for off-spec solution and rinse water regularly dropped liquid waste generation by measurable margins. Salvaged material gets reworked into the next production campaign, shrinking landfill burden. Some of our long-term customers request detailed breakdowns of this waste minimization both to meet their own CSR standards and to satisfy industry certification audits.

    We work alongside community leaders, donating tested secondary products for use in non-critical applications like university demonstration labs. This collaborative approach improves our own methods through feedback and strengthens public recognition of safe, transparent manufacturing. After initial skepticism, local leaders increasingly support the presence of a fluorine chemistry site in their vicinity, recognizing visible reduction in nuisance emissions and accessible means of community consultation.

    Practical Solutions to Industry Challenges

    Potassium fluoride dihydrate remains an essential ingredient in numerous advanced manufacturing and research processes. Yet its value does not come simply from theoretical properties, but from its utility and safety across real-life conditions faced by technicians, operators, and chemists every day. Focusing on aspects like physical form, packaging adaptability, traceability, and above all, worker protection, has made the biggest difference for our own operations and end users alike.

    Over the years, input from the field has driven key product improvements: better packaging, adjustments to particle size, extra certification steps, and transparent records. Our response is not shaped only by regulatory pressure or supply chain trends, but by the lived experience of those handling and applying the product at every stage. Longstanding partnerships and open feedback lines with users across industries ensure that changes meet real needs, not just theoretical standards.

    Potassium fluoride dihydrate, unlike its anhydrous cousin, delivers measured fluorination and safer handling, particularly for those facing occupational exposure risks or requiring consistent batch-to-batch results in sensitive applications. This focus on practical process control, continual dialogue, and meaningful quality guarantees continues to guide both how we produce and offer guidance on its use.