|
HS Code |
331689 |
| Chemical Formula | Na2B4O7 |
| Appearance | White or colorless glassy solid |
| Molar Mass | 201.22 g/mol |
| Melting Point | 741°C |
| Solubility In Water | Soluble |
| Density | 2.37 g/cm³ |
| Ph Value | Approx. 9.3 (1% solution) |
| Cas Number | 1330-43-4 |
| Main Use | Flux in metallurgy and glass production |
| Toxicity | Low, but can cause irritation |
| Stability | Stable under normal conditions |
| Odour | Odorless |
As an accredited Fused Borax factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Fused Borax, 500g, packaged in a sealed, white HDPE plastic bottle with a tamper-evident screw cap and clear labeling. |
| Shipping | Fused Borax should be shipped in tightly sealed, moisture-resistant containers to prevent contamination and clumping. It is classified as non-hazardous, but care should be taken to avoid inhalation or contact with skin. During transport, containers must be properly labeled and protected from physical damage and extreme temperatures. |
| Storage | Fused Borax should be stored in a cool, dry, and well-ventilated area, away from moisture and incompatible substances such as strong acids. Keep it in tightly sealed, labeled containers made of materials that resist corrosion. Store away from food and beverages. Ensure the storage area is equipped with proper spill containment measures and accessible safety equipment. |
Competitive Fused Borax prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615371019725 or mail to admin@sinochem-nanjing.com.
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Tel: +8615371019725
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In every batch we produce, Fused Borax stands as a testament to decades of hands-on experience and daily engagement with real industrial challenges. Technicians on our floor have become experts in seeking the cleanest, purest borax, then refining it in furnaces until every granule reaches full fusion. The resulting glassy product never leaves our plant without strict testing—not just for chemical composition, but also for the clarity, fluidity, and physical behavior that our longstanding customers count on.
Looking closely at our product, we draw a clear line between Fused Borax and the common-sourced borax decahydrate or pentahydrate powders shipped around the world. These grades can meet basic chemical needs, but in our operations we saw repeated problems with re-crystallization, excess water content, and dust drift—none of which belong in critical glassmaking processes or metallurgy. Our Fused Borax, melted at high temperatures and solidified without exposure to ambient humidity, gives a dense, hard glass. This structure resists atmospheric water uptake, so customers aren’t battling clumping or changing weight measures in sensitive recipes.
Among our internal test reports, the model we supply most to glass and enamel shops features a Na2B4O7 composition over 98% purity, with residual sodium strictly controlled. This goes straight into specialty glasses, ceramic glazes, and enamel coatings projects where a predictable, low-volatile flux is the starting point. Looking at specification sheets from customers in steel mills and foundries, we’ve adjusted mesh size and pour point, since this influences wetting behavior on metals during fluxing. By refining the melt and milling steps, our standard fused grade suits these aggressive thermal applications with little fume generation, not breaking down into water vapor and boric acid as the hydrates do.
Every fused borax shipment we send out has passed real-world scrutiny in our own production lines. We use our own glassy borax for formulating high-alumina glass and low-melting frits. In ceramics, it acts as a robust flux, reducing melting temperatures and boosting gloss or texture in sanitaryware and decorative tile. Workers see how fast granules dissolve, how clean the milled powder weighs, and how little it cakes even after months in storage. Experience tells us that fused borax avoids the headaches caused by the instability of decahydrate and pentahydrate powders, especially when exposed to changing moisture.
Glassmakers and enamelers have told us that fused borax from our line reduces pitting and bubbling in finished products, because it releases no boiling water during melting. Unlike its hydrated cousins, which can bring uninvited porosity or haze, fused borax goes straight to work as a flux. Metallurgists on site testify that it spreads evenly and skips the crust formation that frustrates ladle cleaning. Steel foundries find it helps with slag formation and draws out impurities, lowering burner temperatures, which has shown real fuel savings in several long-running projects.
From our point of view, it makes little sense to cut corners on this step in your supply chain. Fused Borax’s chemical behavior is a direct result of the fusion process, locking out the variability and handling problems of traditional borax powders. Our technical staff backs every shipment with melt-point checks and visual inspection, ensuring a trouble-free experience downstream. Clients have opened up about how this simple difference spares them from whole weeks of troubleshooting and product recall—a cost far higher than investing in proper flux.
We know specifications aren’t a checklist. They’re guidelines shaped by how factories operate in reality—under high heat, variable humidity, and the constant threat of process interruptions. Our fused borax sits at a typical composition of Na2B4O7, never less than 98% boron content by weight, with alkali impurities below 0.5%. Granulation averages between 10 and 60 mesh, tuned according to feedback from ceramics, glass, and industrial enamelers. Higher mesh means a smoother blend for delicate glazes; coarser material flows well in silicate tanks and is easier for plant workers to handle with minimal dust.
We live by batch records that show how careful fusion, not simple dehydration, flips borax into a new chemical form. Lab tests run on each lot to check for water solubility, glass transition, and actual fluxing power on reference ceramic bodies and steel samples. Independent customers who tested these batches in their facilities saw melting temperatures drop by as much as 50°C compared to decahydrate borax. In glass and frit manufacturing, the low water activity and dense glassy form mean no surprises in batch weighing or chemical reactivity.
You won’t see our Fused Borax treated with anti-caking agents or stabilizers. Instead, the tight fusion cycle removes all water, dropping final moisture content well below 0.2%. This means the bag you open months after delivery matches the performance you see in our pilot test bay—whether you’re batch-melting a ton or feeding in by the handful to a craft studio kiln.
Customers who bring up fused borax in consultant-run forums often compare their own adjustments using the hydrated grades versus the glassy fused. Several large-scale glassworks we supply have expressed satisfaction that their melt tanks stay cleaner, without the crust or scaling that arises when steam from conventional borax reacts with furnace atmospheres. One ceramics tile line found their glaze defects cut in half within the month after switching entirely to fused grade, avoiding water-related flaws common with decahydrate stocks.
Metallurgy isn’t a world where tolerance for error runs high. Many steel fabricators who moved over to directly feeding fused borax see a major reduction in oxidized inclusions and slag viscosity during alloy production. Our technical team spent weeks working with a brass foundry in East Asia, fine-tuning the pour temperature and application rate. After moving to fused instead of hydrated borax, their pour speed improved, residual impurities dropped, and the frequency of re-melts declined.
Smaller operations with less room for bulk storage have particular praise for the stable, non-caking nature of our fused borax. Hydrated powders can gain weight, dry out, and lose reactive power in tropical humidity. Fused grade stays inert, easy to scoop, pour, and dose—not just on the day of delivery, but for the full shelf life. Some customers who operated in remote locations note that their staff’s handling time dropped sharply, no longer fighting lumps or spill cleanup.
Enamelers and glass decorators who value color and clarity test every batch for consistent melting. Artisans producing colored glassware or high-gloss enamel panels note our fused product allows vivid color expression by eliminating water-triggered foaming inside kilns or muffle furnaces. They also appreciate the lack of additives, since pure fused borax gives a neutral base, letting pigments respond cleanly without unpredictable chemical reactions.
On a production line filled with conveyers, vibratory feeders, and dust collectors, material behavior can make or break a shift. Fused borax flows reliably from silos and bulk shipments; its granular and glassy nature fights bridging and sudden collapses seen in hydrated borax bins. Our process engineers know the down-to-earth challenge of trying to weigh 500 kg in a humid shop and discovering clumps fouling augers. That’s why our factory installs draw on fused borax as a standard, not a backup.
For customers relying on consistent glass batch accuracy, the stable weight and low moisture make every bucket fed into the melt line behave within the expected thermal parameters. Our melt test logs back up these handling benefits. After switching to fused borax, one float glass plant observed a 20% reduction in kiln downtime, since drift and hopper clogging fell off. The absence of vaporized water means less atmospheric humidity fed back into the process, which has led to reductions in pinholes, surface streaks, and failed annealing.
Shop supervisors often call us to talk about transition points: workers switching from hydrated to fused borax need less cleanup, see less airborne dust, and spend less time brushing spills. This tangible change boosts workplace air quality and can even reduce the load on fume extractors. OSHA reports suggest airborne dust reduction helps keep total workplace exposure to a minimum, a real pinch-point with additives and fluxes.
Customer-run maintenance logs echo this experience; there’s no mystery about where fouling or scaling happens. Fused borax’s physical stability keeps processing lines open longer, reducing the frequency and intensity of planned shutdowns for cleaning. For both small and large processors, any reduction in plant downtime can drive bigger efficiency gains than small tweaks in product price.
Our control room crews take a chemist’s pride in running tightly-fused high borate formulas—almost always checked for phase purity before releasing for milling. Unlike powder grades, which break down under modest heat and give off water, crystal-clear fused borax jumps into molten silicates or metal baths directly, acting at a lower addition rate and offsetting cost with performance. We repeat these observations in house and at partner sites, confirming that fused borax outperforms alternate grades in both routine and high-stakes projects.
Every operating plant has its local challenges. Variable supply water, shifting energy prices, and material handling quirks mean a flux like borax isn’t a commodity—it’s a core input. While industry buyers may see costs spread across a long chain, every operator balancing batch sheets appreciates having a feedstock with zero guesswork. We craft our fused borax for clarity and certainty, because surprises in melting behavior or reactivity cost much more than any increment saved in raw material choices.
Whereas hydrated borax grades force processors to account for variable water loss, fused borax cuts out this unpredictable factor. Our teams ran comparative tests on kinetic reactivity and found fused borax acts faster and completes fluxing actions at lower dosages, especially in high-alumina and lead-free glass projects. This difference holds even through large-batch, continuous operations.
Every year, our environmental officers audit air and water emissions across our facilities. Dust emissions from fused borax handling are a fraction of those seen with hydrated borax powders. This matters in two ways: crews dealing with less airborne borate avoid persistent skin and eye irritation, and plants running compliance checks for local regulations hit their targets efficiently.
We’ve trained shipping teams to load fused borax in protected, multi-wall packaging, which reduces handling losses and drop-spill risk. Our customers appreciate receiving loads unharmed by storms or long transits, and we keep tabs on long-term storage in various climates. Shipments hold up well in widely different geographies, from deserts to offshore factories.
Human health also guides our focus. With hydrated borax, airborne exposure can climb rapidly if the powder dries in bags or bins then gets transferred. The glassy fused borax type minimizes such risk, since breakage forms larger fragments instead of fine dust. In response, several of our largest repeat buyers have recorded measurable gains in their workplace air test results and health audits.
Every operator counts on robust safety data, but the daily practice comes down to labeled containers, solid team habits, and keeping material dry and contained. Fused borax fits the bill with no additives or hidden ingredients—just the pure, glassy output from our melting furnaces and careful quality assurance.
Throughout our history, we’ve drawn value by keeping a close link between raw mineral sourcing, on-site quality checks, and final dispatch. By running our own furnaces and storage sites close to our borax mines, we maintain direct control over supply schedules, reducing disruptions for customers. Fused borax requires significant energy and care to manufacture, and we believe investing in reliable plant equipment has paid off in terms of predictable output and long-term partnerships.
Large orders destined for industrial glass or steel applications come from large-scale fusions, while specialty ceramics and lab environments get smaller batches, but all leave our plant sealed in moisture-controlled containers. We don’t rely on generic brokers or distant intermediaries; our process engineers sign off on every load. Supply chain reliability isn’t marketing—it means customers don’t halt production waiting for a key ingredient.
Having direct insight into both shipping and on-site usage lets us respond quickly to customer needs. If a new glass line demands a different grain size, or a foundry hits unexpected slag chemistry, our process teams cycle back to the lab to try solutions and replicate them at scale. This hands-on adaptation gives clients confidence to shift alongside industry trends, without risking process yield or end-product quality.
We believe this attention to the full product journey—from sourcing and fusion to packaging and after-shipment support—serves customers far better than factory-agnostic, bulk-ship vendors. Hardware, craftsmanship, and a willingness to listen all play a role in getting each order of fused borax where it’s needed, how it’s needed, every time.
Each year, new demands surface from downstream industries. Glass producers are pressing into lead-free, color-stable products for electronics and solar panels. Ceramics move to lower firing temperatures and increased durability. Metallurgy turns to minimizing process emissions and energy use. Fused borax sits central to these efforts because its chemical simplicity and fused nature match up with new process specs, reducing unpredictability at each turn.
In sustainability meetings and with regulators, we see the demand for materials with few processing aids, low emission footprints, and little environmental load on recycling phases. Our plant has shifted gradually to even tighter control of effluent, dust, and raw borate sourcing. Customers operating in closed-loop facilities—no landfill, no waste—appreciate having a reliable input that doesn’t complicate downstream handling or create byproduct streams.
Automation and control systems on today’s production lines depend on stable feedstocks more than ever. Variable or moisture-sensitive borax grades throw off inventory sensors, batching feeders, and even automatic dosing systems, whereas fused borax stays consistent through every sensor and cycle count. Engineers tell us these details save more than lost production—they let key personnel focus on value-adding improvements.
We don’t pretend fused borax is a one-size-fits-all answer. Some plants may prefer the lower up-front cost of decahydrate or pentahydrate grades, particularly in less demanding melts or environments where humidity control isn’t a concern. But every time a customer troubleshoots pore issues, glaze separation, glass haze, or non-uniform slag in steel, the root can often be traced back to inconsistent borax delivery. Experience shows that investing in precisely fused, robustly controlled borax pays off in those hard-to-measure spaces: time, rework, cleanup, and staff headaches.
Production leaders looking to reduce downtime and drive consistency in critical input materials often switch to fused borax after repeated analysis. For customers reluctant to make the jump, our lab offers side-by-side technical trials, reviewing finished product, labor hours, and comparative cost per melt. We keep logs of these pilot trials, sharing learnings widely to build better outcomes across industry lines.
Partnership matters as much as product. Our lines are open to provide technical support, help studios or factories adapt recipes, and discuss tweaks as processes evolve. We circulate technical bulletins and best-practice hints not as marketing tools, but because every new application sharpens our understanding and helps all users of fused borax get ahead together.
After years of running both small-scale and massive batch processes ourselves, we know certain standbys remain hard to improve upon. Fused borax offers the certainty operators crave in a world of changing regulations, rising energy prices, and new product demands. Its physically stable, fully anhydrous nature wards off storage, weighing, and dosing problems. Its chemical activity outranks standard borax in fluxing, glassmaking, and metals refining, letting processors tune recipes by experience and not by endless post-hoc adjustment.
From our factory floor to your furnace, fused borax stands out as a direct result of hard-won progress—learning from real-world mishaps, adjusting formulae, and never drifting from the details. Our batches earn trust the same way—and after years working jack-of-all-trades and high purity borate assignments, our team puts its name behind every shipment.
If you handle glass, ceramics, or metals, every step begins with a reliable foundation. In our experience, that foundation still starts with a carefully fused, worker-tested, and industry-validated borax you can trust not just for this job, but for every shift to come.