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HS Code |
733878 |
| Product Name | HIFULL HL-380 Hydrophilic Fumed Silica |
| Bet Surface Area | 400 m²/g |
| Appearance | white, fluffy powder |
| Primary Particle Size | 7-40 nm |
| Ph Value 4 Dispersion | 3.7-4.5 |
| Loss On Drying | <1.5% (at 105°C, 2h) |
| Sio2 Content | ≥99.8% |
| Bulk Density | 40-60 g/L |
| Silanol Groups | high concentration |
| Hydrophilicity | hydrophilic |
| Specific Gravity | 2.2 g/cm³ |
| Refractive Index | 1.46 |
| Chemical Formula | SiO2 |
| Cas Number | 112945-52-5 |
As an accredited HIFULL HL-380 Hydrophilic Fumed Silica (BET=400㎡/g) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HIFULL HL-380 Hydrophilic Fumed Silica is packaged in 10 kg multi-layer kraft paper bags with polyethylene liner for moisture protection. |
| Container Loading (20′ FCL) | 20′ FCL: Typically loads 2,000 kg (80 bags x 25 kg) of HIFULL HL-380 Hydrophilic Fumed Silica, securely palletized. |
| Shipping | The chemical **HIFULL HL-380 Hydrophilic Fumed Silica (BET=400㎡/g)** is securely packed in 10kg or 20kg multi-layer kraft paper bags with inner PE liners. Each pallet contains 400kg or 480kg. The shipment is transported on pallets, protected from moisture and handled according to standard chemical shipping regulations. |
| Storage | HIFULL HL-380 Hydrophilic Fumed Silica (BET=400㎡/g) should be stored in a tightly sealed container in a cool, dry, and well-ventilated area, away from moisture and incompatible substances. Protect from direct sunlight and sources of ignition. Avoid generating dust and handle with care to prevent inhalation. Ensure storage area is equipped with appropriate ventilation and spill containment measures. |
| Shelf Life | HIFULL HL-380 Hydrophilic Fumed Silica (BET=400㎡/g) has a shelf life of 24 months when stored unopened and dry. |
Applications of HIFULL HL-380 Hydrophilic Fumed Silica (BET=400㎡/g) in Industrial ManufacturingAs the original manufacturer of HL-380 hydrophilic fumed silica, we support professional formulators and industrial producers across multiple advanced sectors. With its extremely high specific surface area and sub-micron particle size, HL-380 serves critical functions in thickening, rheology modification, anti-settling, and reinforcement where high consistency and controlled dispersion are required. The following application segments reflect established, industrial-scale downstream adoption. 1. Silicone Sealant ProductionHL-380 provides key thixotropic and reinforcing benefits in neutral and acetoxy-cure silicone sealant compounds. Consistent gelling performance supports stable extrusion and controls sag during vertical application. The material’s hydrophilicity allows efficient wetting and dispersion within both two-part and one-part RTV systems. HL-380 also enhances bond strength and physical durability in finished sealants produced for architectural and industrial use. Industry compliance standards
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2. Unsaturated Polyester Resin Compounds (UPR)Within the UPR sector, HL-380 addresses anti-settling challenges for pigment and filler stabilization, especially in highly filled SMC/BMC formulations. Its three-dimensional silica network minimizes phase separation during storage and processing. The material ensures consistent working viscosity—critical for controlled preform molding and automated resin transfer operations. Industry compliance standards
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3. Paints and Industrial CoatingsHL-380 is used as a rheology modifier and anti-settling agent in high-performance paints, varnishes, and waterborne coatings. Its action prevents pigment flotation and stabilizes viscosity under shear. It is preferred for formulating high-gloss, low-VOC paints and maintains dispersion stability in demanding storage and processing environments. Industry compliance standards
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4. Adhesive and Sealant FormulationsIn industrial adhesives, HL-380 serves to tune flow properties, suspend high-density fillers, and improve structural strength post-curing. Hot-melt, solvent-based, and waterborne adhesives formulated with the material exhibit improved non-sag behavior and reduced settling during packaging and in-use storage. Its hydrophilic character makes it apt for water-based and latex-specific applications requiring fast wetting and stability. Industry compliance standards
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5. Plant Protection Formulation (Agrochemicals)HL-380 aids suspension and flow modulation in water-dispersible granules (WDG), wettable powders (WP), and SC (suspension concentrate) pesticide formulations. Its high surface area ensures rapid wetting and sustained suspension of active ingredients, leading to homogeneous product performance even after prolonged storage. Adjustment of addition levels depends on the specific gravity of the active and the granulation route used. Industry compliance standards
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6. Printing Ink ManufacturingHL-380 optimizes viscosity and pigment suspension in solvent and water-based ink systems for flexographic, gravure, and screen-printing. The product facilitates rapid setting and consistent transfer characteristics at high-speed press runs, while preventing pigment settlement during bulk storage. The hydrophilic nature is particularly valuable for maintaining clean, clog-free performance in waterborne inks tailored for packaging and security applications. Industry compliance standards
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Competitive HIFULL HL-380 Hydrophilic Fumed Silica (BET=400㎡/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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Producing fumed silica every day on the plant floor, I see firsthand what sets each grade apart. The HIFULL HL-380 hydrophilic fumed silica represents many years of direct investment in achieving higher surface area, cleaner silanol chemistry, and tighter particle control. Its BET surface area—measured at 400 square meters per gram—doesn’t just land on paper through random batch outcomes. True high-end silica comes from keen control at each process step. HL-380 reflects careful attention to our flame hydrolysis reactors, raw precursor purity, and stringent downstream handling.
Fumed silica may look like white dust in a polyethylene bag, but people in coatings, adhesives, or silicone blending factories know the difference between a badly-behaved, flyaway powder and a reliably engineered product. Over years at the control panel, I have watched plant operators struggle if the flowability goes off, or particle size agglomerates. The HL-380 has been tailored for customers demanding clear rheology control, consistent thickening, or anti-settling effects—even at low dosages. We keep strict tabs on ignition loss, SiO2 content, pH adjustment, moisture, and trace metals; every lot meets expectations because customers trust us to maintain that consistency batch after batch.
A BET surface area of 400㎡/g means HL-380 offers increased interaction sites for absorption or gellation, compared to common grades in the 200–300 range. On the production lines, this means even small quantities transform viscosity in epoxy systems or improve reinforcement in silicone rubbers. With HL-380, those managing thickener or carrier requirements can lean on lower use levels, reducing impact on process logistics and packing density in finished goods.
Hydrophilic grades matter for their ability to disperse in polar liquids. In contrast to hydrophobic fumed silicas, HL-380 is surface-rich with hydroxyl groups. These sites create hydrogen bonds with water or ethanol; this makes it particularly compatible with waterborne coatings, resins, or personal care systems. Our colleagues in the field tell us that switching to HL-380 can cut mixing times and avoid the need for specialty dispersants, provided the plant follows proper high-shear or pre-wet steps.
In paint manufacturing, HL-380 has gained a reputation for proper sag control and pigment suspension, so painters don’t return with cans gone hard at the bottom. Production batches running at our partner sites have shown this fumed silica can handle alkaline pH or mild surges in humidity. We designed it for minimal dusting, though handling requires standard PPE. In silicone sealant plants, adding HL-380 brings increased mechanical strength and stops shrink-back during curing. If a customer tries to substitute a lower BET product, they find they can’t hit the same thixotropy or clarity at the same dosing level.
HL-380 finds work in battery electrolytes, adhesives, unsaturated polyester resin processing, ink manufacture, and dental materials. Over years in the business, we have seen competitors offer blends or so-called “universal” fumed silicas, but close work at the bench shows HL-380’s engineered surface brings higher transparency in polyurethane films or stabilizes emulsions for longer shelf life. Industrial companies needing low trace metal or chloride levels have checked our certificates to confirm suitability in electronics or fiber optics slurry.
Making HL-380 comes down to discipline in flame hydrolysis and post-collection handling. Silane gas purity, flame stoichiometry, and residence time all dictate aggregate size and surface chemistry. We sample every production run using electron microscopy; SEM imagery confirms HL-380’s branched, three-dimensional structure, which interacts more dynamically with resins than coarse or amorphous silicas. Experienced operators prevent contamination by keeping collection cyclones spotless and using non-metal scrapers, avoiding trace iron or manganese contamination that can shock downstream curing times.
During surface area audits, our QC rooms run each drum’s contents against historical standards. Plant teams document batch-to-batch purity and pH drift, since experienced formulators rely on unchanging dispersibility for their daily production efficiency. We run real pilot-scale simulation blends, not just lab beakers, to make sure HL-380 performs in the same range whether mixed with epoxies, solvent-borne alkyds, or ethylene-vinyl acetate. Several of our long-term customers send plant managers and technicians for joint audits—where we routinely open up our processing floor to transparency.
HL-380’s surface area forms the principal line of difference. There’s a world between a 200㎡/g and a 400㎡/g fumed silica in how they absorb polar ingredients. We supply both types, but customers needing finer dispersion, flatter gloss curves, or sharper thickening will notice the HL-380 brings greater efficiency per kilogram. In fact, many ink and electronics formulators swap out lower grades for HL-380 once they compare side-by-side production runs for haze or clog-free pumping.
Compared to our own lower BET hydrophilic grades, HL-380 exhibits finer particle size distribution—verified with dynamic light scattering studies done at our in-house labs—and a lower proportion of oversized agglomerates. This results in softer, easier wet-in, reducing time on dissolvers and saving wear on equipment. HL-380 remains hydrophilic but offers a higher density of available hydroxyl groups, which improves synergistic effects when blended with cellulose or polyurethane rheology modifiers. Higher-end cosmetics and food-safe processers often select HL-380 for these specific chemical interactions after running parallel stability tests.
Every batch presents its own practical challenges. At bulk scale, even minor atmospheric changes or a slip in precursor feedrate will show up as a dip in surface area or a shift in particle branch structure. We maintain a daily culture of active monitoring: technicians double-check cyclone catch rates, monitor temperature/pressure ratios, and correct for any burner fouling. Long-term, we have minimized variability by automating documentation and using statistical process control software across every shift.
Several customers came to us after struggling with “off-the-shelf” fumed silicas that caused unpredictable settling or foaming in latex paints. In direct trial runs, HL-380 fixed settling issues, stabilized viscosity through aging, and even improved antifoam response—helping keep downstream lines moving. When customers have special demands, like ultra-low impurities for sensitive pharmaceuticals, HL-380 undergoes an extra finishing stage, including extra filtration and condensation grade packout to meet regulatory standards.
HL-380 isn’t simply a higher surface area number—it’s a benchmark resulting from deliberate work to maximize utility for high-shear, high-load industrial processes. In construction chemicals, its superior thickening power translates to smoother mortar slump resistance and reduced phase separation in concrete admixtures. In battery applications, broad experimental runs using HL-380 have demonstrated measurable increases in cycle stability and improved electrode paste consistency. Our coordination with battery OEMs has shown HL-380 helps maintain electrolyte uniformity over extended charge-discharge cycles.
For automotive coatings and gelcoat manufacturers, HL-380 ensures faster incorporation and more predictable anti-sag compared with generic silicas. Its narrow particle size reduces micro-bubbles, leading to better optical clarity in final layers under showroom lighting. In the adhesives sector, workers told us HL-380’s controlled surface chemistry has cut rework rates due to unset or stringy batches, especially in winter applications requiring sheer strength at low temperatures.
A fumed silica producer learns by seeing what factories actually face, not just relying on lab-based idealizing. Over decades of site visits, supporting technical trials, and reviewing failed batches, we build each HL-380 shipment with a clear view of the operator’s needs. Whether troubleshooting a gelling failure in a foundry coating or optimizing mix ramp in a resin plant, our tech team uses HL-380’s known behaviour with solvents, binders, and crosslinkers as the basis for each custom solution.
When environmental or sustainability questions arise, HL-380 plays an indirect but significant role. Its higher efficacy helps processors cut filler loading, which in turn means lighter finished goods and less total waste. Our site engineering team has improved bagging automation to minimize powder escape, and we have invested in dust reclaim systems to recapture fines during packing. These steps both protect our workers and support customer goals for cleaner production under evolving regulations.
Year by year, HL-380’s application base expands as formulators challenge the limits of existing product lines. They call on us with questions: Can we push the silica percentage higher before flow issues crop up? Does HL-380 maintain performance after months in a heated warehouse? What about performance in high-shear toothpaste extruders or heat-resistant silicone tubing? Our R&D staff answers these with hands-on trials and on-site support—never with generic or “out-of-the-box” claims.
Research links fumed silica performance to long-chain molecular interactions, and the more data we gather from pilot-scale work, the better we fine-tune our process. HL-380 stands as a product improved by feedback—sometimes a minor filtration change or an atomizer nozzle adjustment at the plant can make all the difference in final application performance. That’s why real-time collaboration with users keeps our silica at the leading edge.
At the end of the day, repeated results decide which materials stay in customer plants. HL-380 has held its ground as a preferred choice because our teams treat every shipment as both a test of quality and a relationship-building opportunity. For processors looking for better control in pigment suspensions, adhesives, resins, or pastes, HL-380 remains a solution developed not from theory, but from showing up—shift after shift—at the heart of the process, learning what actually works, and refusing to settle for less than the best.
Our experience shows that real problem-solving never ends; technology evolves and applications shift. We commit our resources to ongoing calibration, unbiased customer trials, and direct feedback capture for every grade we make. With HL-380, you don’t just buy a powder. You buy our years of production discipline, hands-on service, and belief that products should work not just in the lab, but above all in your workflow, where results matter most.
