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HS Code |
166442 |
| Product Name | HIFULL HL-450 Hydrophilic Fumed Silica |
| Bet Surface Area | 450 m²/g |
| Appearance | White, fluffy powder |
| Particle Size | Primary particle size: 7-16 nm |
| Loss On Drying | < 1.5% |
| Ph Value | 3.6–4.5 (in 4% dispersion) |
| Sio2 Content | ≥ 99.8% |
| Bulk Density | 30–60 g/L |
| Specific Gravity | 2.2 g/cm³ |
| Refractive Index | 1.46 |
| Moisture Content | < 1.5% |
| Surface Chemistry | Hydrophilic |
| Cas Number | 112945-52-5 |
As an accredited HIFULL HL-450 Hydrophilic Fumed Silica (BET=450㎡/g) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HIFULL HL-450 Hydrophilic Fumed Silica is packaged in 10kg double-layer kraft paper bags with polyethylene liner for moisture protection. |
| Container Loading (20′ FCL) | 20′ FCL container loads 1100kg HIFULL HL-450 Hydrophilic Fumed Silica, packed in 10kg bags, 110 bags per container. |
| Shipping | HIFULL HL-450 Hydrophilic Fumed Silica (BET=450㎡/g) is securely packed in 10 kg paper bags with inner PE liners or 120 kg jumbo bags to prevent moisture absorption. Shipments are palletized and shrink-wrapped, suitable for sea, air, or land transport. Handle with care to avoid damage and exposure. |
| Storage | HIFULL HL-450 Hydrophilic Fumed Silica (BET=450㎡/g) should be stored in tightly sealed containers in a cool, dry, and well-ventilated area. Protect from moisture and direct sunlight. Avoid storing near incompatible materials, such as strong acids or bases. Always keep containers tightly closed and handle in accordance with good industrial hygiene and safety practices to prevent dust formation. |
| Shelf Life | Shelf life of HIFULL HL-450 Hydrophilic Fumed Silica (BET=450㎡/g) is typically 24 months if stored unopened, dry, and cool. |
Applications of HIFULL HL-450 Hydrophilic Fumed Silica (BET=450㎡/g) in Industrial ManufacturingHIFULL HL-450 Hydrophilic Fumed Silica is widely used in industrial manufacturing due to its ultra-high specific surface area, strong thickening abilities, and effective rheological modification. Our plant-grade HL-450 supports precise applications across advanced coatings, silicone rubber, adhesives, personal care formulations, sealants, and battery gels. Below we detail core application scenarios with technical specificity for downstream industries. 1. UV-Curable Ink FormulationHL-450 offers superior viscosity control, anti-settling properties, and pigment suspension in UV-curable ink formulations for high-resolution printing. Technical teams rely on it to adjust flow and improve print edge sharpness. Proper dispersion within polyacrylate and epoxy oligomer matrices enhances overall stability, pigment orientation, and storage life. HL-450 enables the manufacturing of specialty inks for packaging, high-speed labels, and industrial marking where precise rheological tuning is required for consistent output and print quality during curing by UV lamps. Industry compliance standards
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2. Silicone RTV Rubber ManufacturingHL-450 serves as a premium reinforcing filler for room temperature vulcanized (RTV) silicone systems, dramatically improving tensile and tear strength, elongation, and dimensional stability. It supports uniform filler distribution and maximizes crosslinking density, critical for high-quality moldmaking, gaskets, and electric insulation products. Its high surface area enhances both mechanical and dielectric properties in platinum-cured and condensation-cured silicone processes, playing a key role in production consistency and tight tolerance applications. Industry compliance standards
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3. Industrial Adhesive Thickening and Anti-Sag ControlHL-450 delivers essential rheological adjustment and sag resistance in solventborne and waterborne adhesive formulations. Operators employ it to control sag, improve application precision, and maintain bond-line shape under dynamic load, particularly in construction, woodworking, and assembly adhesives. HL-450 works effectively in polyurethane, epoxy, and acrylic adhesive bases, ensuring reliable bead stability and stirring workflow efficiency in automated and manual processes. End-users benefit from consistent vertical, overhead, and gap-filling adhesive applications. Industry compliance standards
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4. Cosmetic and Personal Care Rheology ModifierHL-450 is adopted in personal care production to sculpt texture, suspend actives, and stabilize emulsions in premium skin care, color cosmetics, and sun-care preparations. It allows formulators to design non-oily, fast-absorbing, and stable creams and gels with a pleasant touch, supporting the development of non-drip and extended release products. HL-450 increases formulation viscosity without compromising sensory feel or compatibility with active ingredients, supporting clean label claims and advanced formulation transparency. Industry compliance standards
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5. Industrial Coatings Anti-Sag and Matting AgentHL-450 is used in industrial metal, wood, and plastic coatings for sag resistance, anti-settling, texture customization, and matting. Coating manufacturers use it to achieve precise viscosity control, prevent pigment settling during storage, and develop matte or silky finishes. HL-450’s high surface area creates strong thixotropic systems and allows for scratch resistance and improved adhesion through better pigment and binder distribution. Its efficiency benefits high solids and VOC-compliant coatings, especially for automotive, appliance, and infrastructure paint systems. Industry compliance standards
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6. Battery Separator Gel ElectrolytesHL-450 supports advanced lithium-ion and lead-acid battery manufacturing as a structure modifier in separator gels. It imparts network formation, ionic conductivity stability, and mechanical integrity in silica-based or PEO-based gel electrolytes. Cell assembly lines benefit from improved separator wetting, dimensional control, and electrolyte immobilization, which are key for extending battery cycle life and reducing self-discharge. HL-450 enables the formulation of next-generation batteries for automotive, ESS (Energy Storage Systems), and portable electronics. Industry compliance standards
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Competitive HIFULL HL-450 Hydrophilic Fumed Silica (BET=450㎡/g) prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615651039172 or mail to sales9@bouling-chem.com.
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Tel: +8615651039172
Email: sales9@bouling-chem.com
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Fumed silica has carved out a unique space for itself among industrial additives. Over the past decade, operations on our production line have shown just how much hinges on the right choice of this white, ultrafine powder. HIFULL HL-450 Hydrophilic Fumed Silica sits among the finest we engineer, sporting a surface area of 450㎡/g. This level of BET value plays a direct hand in the kind of performance demanded by paint formulators, battery developers, adhesives makers, and silicone rubber converters. Decades spent in manufacturing and collaboration with our industry partners have shaped our approach—bridging laboratory science and large-scale output while answering technician feedback and the needs of production managers alike.
At its core, HL-450 stands out because of its high surface area. In our own mixing tanks, we’ve run side-by-side tests with lower-BET grades. A pigment paste will thicken faster and resist settling more stubbornly, thanks to the increased “touch points” between silica and matrix. The loosely aggregated primary particles, typically below 20 nanometers, lead to remarkable thickening and thixotropic control at lower loading than standard hydrophilic alternatives. This means a rheology modifier that lets formulating chemists stretch every kilo a little further, easing downstream pumpability and reducing overall input costs.
In moisture-curing systems—like one-part adhesives and certain sealant pastes—HL-450’s interaction with water is both asset and challenge. During scale-up, its hydrophilic nature allows fast wetting and incorporation, minimizing clumping in planetary mixers or high-shear dissolvers. That same surface chemistry also demands careful handling in sensitive moisture-curing chemistries, but our regular feedback from end users and QC labs shapes the blends we design and the lot release processes we trust.
For us, the job begins at raw material selection. Raw silanes and silicon tetrachloride quality, reactor cleanliness, gas phase synthesis controls—these are cornerstones. Out on the line, each HL-450 batch goes through triple filtration to sift out oversized aggregates. Particle size distribution gets checked every shift. The team has learned that even a minor deviation in surface area or aggregate size sneaks into finished paint or rubber as defects or cloudy dispersion. Each shipment reflects a promise built on dozens of in-process checks and a final sieve analysis before bagging.
Packing also goes beyond industry standards. We’ve held roundtables with logistics and plant maintenance managers to redesign liners that resist static cling and prevent moisture ingress during long transit. Every time a QC sample gets flagged for agglomeration or off-odors, a feedback loop sparks between our synthesis engineers and quality teams to address root causes before the next production run.
Nothing puts a new product through its paces like a high-shear mixer at plant scale. Chemists blending HL-450 into a waterborne coating see the kind of viscosity boost and anti-settling effect that streamlines packaging and warehousing logistics. In silicone rubber, its fine structure evenly disperses into two-part RTV kits, increasing the final set’s tear resistance without compromising clarity or flow. For printers handling ink, HL-450 answers bleed and dot gain, helping them dial in the vividness and definition their clients demand.
Over the years, application development teams have flagged the sensitivity of some fumed silicas to pH swings and shear profiles. HL-450 repeatedly shows versatility across both acidic and alkaline regimes. As production runs climb into the multi-tonne scale, teams blending pigments, resins, or elastomers trust HL-450 to maintain texture and flow, whether poured from a bag or incorporated through automated bulk feeders. Technicians sometimes critique dusting, so we continue searching for anti-dust granulation strategies that don’t compromise dispersibility.
Not all fumed silicas rise to the same challenges. Field trials have shown that HL-450 brings higher specific surface area than HL-200 or HL-300 grades, supporting radically improved sag control in vertical coatings at reduced loadings. Unlike lower surface area variants, HL-450 curtails pigment sedimentation over longer warehouse life—critical for goods sent overseas through temperature and humidity swings. Customers in adhesives report better thread control and bead stability, with lower impact on clarity than comparable high-thickening silicas with less structure control.
We avoid surface treatments in HL-450 to preserve full hydrophilicity. Some applications thrive on this: for example, moisture absorption in catalysis, or use as a carrier for aqueous and polar systems. By contrast, hydrophobic grades (like HL-200 H) minimize water uptake and show greater compatibility in resin-rich systems, but lose the rapid wet-in and flow control needed by waterborne coatings or polar plasticizers. Direct customer feedback steers our production mix, pushing us to refine each grade with real-world use in mind.
Process engineers and technical managers often tolerate the quirks of fumed silica because no other ingredient offers the same balancing act between rheology, flow, and surface effects. Yet, unresolved challenges still surface. Dusting from fast dumping, agglomerate lumps from under-shearing, and over-thickeners from insensitive scales—all can trip up output targets or add time and cost.
We’ve responded with operator training modules on slurry pre-dispersion, along with swirl induction tips for smaller batch sizes. For plants handling large drum or big-bag feeds, our design team engineered a vented packaging film that sheds powder more cleanly, reducing airborne fines. On the chemistry side, our R&D staff partner with users still battling edge settling or needle stalling in inkjet ink, discussing dispersant choices and post-mix filtration. In short, product innovation never stops at the powder—it continues through every interaction post-delivery.
Year after year, buyers and technicians ask how these powders stack up not just in the test tube but in day-to-day output: fewer batch adjustments, smoother transfer, less clean-up, and more yield per ton. HL-450 earns its spot in production portfolios through a combination of measurable thickening and anti-settling—especially valuable for long-dwell storage or slower-moving specialty batches. Paint formulators see shipping containers arriving with higher film build, less phase separation, and consistent gloss or matting properties batch after batch.
Manufacturing is not just about milligrams on analysis sheets. The texture, absorbency, and flow in real-world mixers mean the difference between a plant report flagged “all good” and a morning lost to adjustment runs. HL-450’s tight process controls reduce guesswork. During routine feedback sessions, customers highlight the ease of cleaning tanks and pipes, the smoothness of pumping pre-dispersions, and reduced loss-on-ignition compared to some imported fumed silicas of similar surface area.
Air quality in the production hall matters as much as the final drum out the door. Over the years, shopfloor health officers and process engineers have flagged powder transfer and dusting as leading concerns. HL-450’s average density and particle structure flow smoothly out of bags and drums, supporting closed transfer wherever possible. We regularly assess alternative dust-suppression methods including light pelletization and humidity-controlled packaging—not just to comply with safety guidance, but to protect staff over thousands of cycles. Sustainability in silica processing turns on optimizing energy inputs, recycling process water, and trapping offgas siloxanes before venting; investments here echo downstream in safer, cleaner output for both workers and environment.
Much of the magic in HL-450 comes down to BET surface area—this may seem like lab jargon, but on the line, it dictates more than just thickening capacity. A higher number means more silica surface to interact with carrier fluids, resins, or dispersants. In our production tests, HL-450 holds thixotropy longer in high-speed dispersion mills, maintains viscosity in sheared slurries, and extends shelf-life in two-pack kits. Customers blend it into new launches or legacy formulations where process stability pays off in longer run times and reduced culls.
Meanwhile, feedback sessions with compounding plants and QC managers stress the differences between HL-450 and commodity fumed silicas at 200-300㎡/g. In paint, the superior anti-sag effect means fewer touch-ups or field complaints. Rubber producers see fewer micro-voids in set parts. In consumer goods, the ability to hold powders stable during months-long shipment preserves both function and appearance at the retail shelf.
Each ton of HL-450 sent out reflects the collective lessons of years spent behind mixers, reactors, and quality check benches. As a direct manufacturer, we learn from customers in real time. Adjustments in bolt loading or mixing energy, new feedback on particle dispersibility or compatibility, and reports on packaging performance inform our next round of process improvements. Continuous improvement is not an empty slogan—it’s what keeps production deadlines tight and customer outcomes positive through the ups and downs of supply and demand cycles.
Technical sales teams and R&D partner routinely visit customer plants, helping weigh hopper loads and troubleshoot real-world issues—sludge build-up, nozzle clogging, or batch-to-batch variance. Internal feedback cycles shape our R&D targets as much as market trends or regulatory shifts. Whether testing anti-caking agent dosing or humidity-resistant packaging, actual plant feedback refines the path forward far more than theoretical lab discussions ever could.
The journey to HL-450 reflects more than a synthesis recipe or a few lines of lab data. Every day, teams across production, technical service, and R&D invest in incremental improvements that matter during mixing, handling, and end-use. HL-450 delivers advantages in surface area, thickening action, and dispersibility—outcomes only possible because of the close, ongoing collaboration between manufacturing expertise and customer insight. In an industry where true performance gets tested hourly on the line, HL-450 stands as a testament to what’s possible when manufacturing walks shoulder to shoulder with its end users.
