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HS Code |
161828 |
| Product Name | HIFULL HL-300 Hydrophilic Fumed Silica |
| Bet Surface Area | 300 m²/g |
| Appearance | White, amorphous powder |
| Ph Value | 3.6 - 4.3 (4% aqueous dispersion) |
| Loss On Drying | < 1.5% (at 105°C for 2 hours) |
| Sio2 Content | > 99.8% |
| Primary Particle Size | 7 - 16 nm |
| Bulk Density | 40 - 60 g/L |
| Specific Gravity | 2.2 g/cm³ |
| Refractive Index | 1.46 |
| Moisture Content | < 1.5% |
| Chemical Formula | SiO2 |
As an accredited HIFULL HL-300 Hydrophilic Fumed Silica (BET=300㎡/g) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HIFULL HL-300 Hydrophilic Fumed Silica is packaged in 10 kg multi-layer kraft paper bags with inner polyethylene lining for moisture protection. |
| Container Loading (20′ FCL) | 20' FCL loads approximately 2,700 kg of HIFULL HL-300 Hydrophilic Fumed Silica, packed in 10 kg bags or 10 kg cartons. |
| Shipping | HIFULL HL-300 Hydrophilic Fumed Silica (BET=300㎡/g) is typically shipped in sealed 10kg or 20kg multi-layer kraft paper bags or fiber drums to ensure product integrity and prevent moisture exposure. Shipments are securely palletized and stored in dry, ventilated conditions. Handle with care to avoid dust and contamination during transit. |
| Storage | HIFULL HL-300 Hydrophilic Fumed Silica (BET=300㎡/g) should be stored in a cool, dry, and well-ventilated area, away from moisture, direct sunlight, and incompatible substances. Keep the container tightly closed to prevent contamination and airborne dust. Store at ambient temperature and avoid generating dust during handling. Ensure appropriate labeling and secondary containment in case of spillages. |
| Shelf Life | HIFULL HL-300 Hydrophilic Fumed Silica has a shelf life of 24 months when stored in original, unopened packaging under dry conditions. |
Applications of HIFULL HL-300 Hydrophilic Fumed Silica (BET=300㎡/g) in Industrial ManufacturingHIFULL HL-300 Hydrophilic Fumed Silica is integral to advanced industrial formulations that demand high performance in terms of viscosity adjustment, reinforcement, anti-settling, and rheological stability. As the direct manufacturer, we support global B2B clients with consistent and tailored grade stability according to specific sector requirements. Below, we detail actual downstream industrial applications where HL-300 is established as an essential raw material. 1. Silicone Sealant CompoundingHL-300 serves as a reinforcing filler and rheology modifier in the formulation of silicone sealants. Its unique hydrophilic surface area provides precise thixotropy, sag resistance, and improved mechanical strength during both extrusion and curing. Manufacturers use HL-300 in single-component and two-component silicone systems to meet dynamic gap-filling and adhesive performance standards for the building and electronics sectors. Industry compliance standards
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2. Industrial Coatings and PaintsIndustrial formulators use HL-300 to control rheology and anti-settlement in high-solid and solventborne coatings. Its fine particle size prevents pigment sedimentation, enhances sag control on vertical surfaces, and reduces flooding and floating phenomena. HL-300 also improves scratch resistance and surface smoothness in finished paint films for heavy-duty asset protection. Industry compliance standards
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3. Adhesive and Epoxy FormulationsEpoxy and industrial adhesive producers rely on HL-300 for flow control, vertical hold, and increased mechanical reinforcement in structural and assembly adhesives. The high specific surface area interacts with resin matrices to suppress unwanted settling of fillers, maintain uniform distribution of curatives, and build thixotropic structure essential for gap-filling and application on overhead or inclined surfaces. Industry compliance standards
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4. Unsaturated Polyester and Gelcoat ManufacturingComposite and gelcoat producers apply HL-300 as both a rheology control agent and anti-settling additive in unsaturated polyester resins. By enhancing viscosity in low-reactivity systems, HL-300 prevents filler sedimentation during storage, improves sag resistance when applied on vertical molds, and maintains surface smoothness in marine and fiberglass-reinforced applications. Its high purity meets strict requirements where clarity and mechanical strength are critical. Industry compliance standards
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5. Industrial Ink and Printing Plate ProductionHL-300 modifies ink rheology and enhances stability for both solvent-based and UV-cured industrial printing inks. Its anti-settling and anti-caking properties prevent pigment agglomeration during storage and facilitate sharp image transfer on screens or offset plates. Printers achieve smoother flow, crisp edge definition, and reduced misting in high-speed application environments. Industry compliance standards
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6. Pharmaceutical and Nutraceutical Tablet Processing (Technical Grade Use Only)HL-300 technical grade is employed as a glidant and free-flow agent in the dry blending of tablets and powder-based dietary supplement processes, where fine powder flowability must be maximized to guarantee accurate die filling. As a non-reactive anti-caking agent, HL-300 inhibits moisture-induced agglomeration during storage and handling, supporting automated tablet compression throughput in non-food, non-ingestible applications. Industry compliance standards
Typical usage ratio
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Competitive HIFULL HL-300 Hydrophilic Fumed Silica (BET=300㎡/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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Over years in chemical manufacturing, many customers walk into our plant with the same questions about fumed silica. They ask about performance, consistency, and suitability for coatings, adhesives, or gels. In our own production halls, we have seen how hydrophilic fumed silica, especially a grade like HIFULL HL-300, can shape an industry’s raw material expectations. This is not just a powder to us—it’s a result of countless hours spent fine-tuning process parameters, material purity, and batch integrity. We carry these lessons to every shipment. For formulators and process engineers facing changing raw material quality or new product demands, the practical details make all the difference.
HIFULL HL-300 delivers a BET surface area around 300㎡/g, and that number means more than a line in a specification sheet. Through years monitoring customer feedback in adhesives, sealants, and silicone rubber plants, we see how this surface area, maintained consistently within tight ranges, influences everything from thixotropy to particle dispersion. A BET around 300㎡/g brings excellent thickening behavior for both polar and non-polar systems, without the gelling or caking associated with less uniform grades.
Not every fumed silica behaves the same. Particle architecture in HL-300 brings visible differences compared to lower or higher BET grades. Our reactors deliver a controlled, branched structure, not the random aggregations that can throw off viscosity targets. When you’re running a high-throughput mixer or extruding compounds under pressure, these micro-scale details show up fast—good flow, quick incorporation, batch-to-batch stability.
We know mixers, mills, and extruders are only as good as the ingredients put into them. In HL-300’s case, our gas-phase synthesis uses high-purity silanes and carefully controlled flame hydrolysis. Customers notice the lack of visible grit, fewer specks and clumps, and a drier handling feel. This translates to lower risk of clogged lines or inconsistent blends, even in automated systems set to run long hours without manual intervention.
Certain jobs require a fumed silica with reliable water affinity and balanced activity, and HL-300 stays in those formulations because it actually performs. Coatings formulators require control over flow and sag, but they do not want to introduce haze or risk pigment float. HL-300 finds its way into water-based and solvent systems alike, efficiently preventing settling in storage for months at a time. In rheology modification for paints, its combination of structure and purity offers improvements in anti-sag and leveling without disrupting color development.
In adhesives and sealants, particularly acetoxy and neutral silicone systems, HL-300 brings both viscosity control and reinforcement. We have run compatibility tests with a range of plasticizers and crosslinkers sourced from global suppliers, and HL-300 integrates smoothly and reproducibly. Customers report fewer package failures and less shrinkage over shelf time, because the silica doesn’t catalyze side reactions or introduce instability.
Producers of cable gels, lubricants, and greases describe HL-300’s dispersibility as a game changer. In our own development labs, we blend and monitor response times at multiple shear rates to track thickening curves. The 300㎡/g surface area establishes a robust three-dimensional gel structure without the overkill of harder-to-process higher BET silicas. The result is fast response during mixing, predictable final texture, and less post-blend adjustment time in industrial settings.
Dental impression pastes, foundry resins, and specialty elastomers also rank HL-300 highly in application feedback. In these segments, purity and low impurity profiles matter: any trace metal, unreacted feedstock, or contamination will rapidly impact downstream properties and compliance. We enforce quality checks for every HL-300 batch, screening for such trace elements, based on strict internal protocols—hard lessons learned from customer audits and our own root-cause analysis during production upsets.
Inside the plant, reproducibility sits at the top of our priority list. HL-300’s stability comes from continuous production monitoring, not automated settings alone. We calibrate flame temperature, feed rates, and precursor purity multiple times each shift. Manual cross-checks and on-the-spot analytics back up the lab’s QC process—trust in a product like HL-300 is earned when viscosity and particle checks agree week after week.
Grinding and deagglomeration receive particular attention. HL-300 is handled under controlled humidity and temperature, with dedicated lines for hydrophilic fumed silica grades. By preventing cross-contamination, we protect surface chemistry, which pays off later for the end users fighting hydrophobic particle surfaces when they want water-wettable components. Our people know the feel of a well-milled fumed silica, the absence of clumps between their fingers after a fresh batch, the way fine dust settles slowly from the air.
Packaging also matters. HL-300 leaves our facility in anti-static bags or bulk containers with clearly traced lot codes, not as an afterthought, but as a way to guarantee the product our customers open matches what left our silos.
Long experience tells us that fumed silica dust control demands vigilance. HL-300’s fine, lightweight structure inspires careful handling protocols to manage airborne dust in filling and transferring operations. In our facility, we keep airborne particulate below regulated limits with dust extraction and closed transfer stations.
Many of our clients also inquire about the environmental and health footprint of HL-300. Our raw material selection excludes hazardous impurities and minimizes process emissions—every batch of HL-300 carries records of input purity validations and emissions monitoring. Training operators to handle the material safely, supplying suitable dust masks, and investing in local air filtration mean our process and our product support long-term health, both on our floor and in user facilities.
Disposal of packaging and trace residues ranks among the main concerns of customers looking for closed-loop operations or green certifications. HL-300’s inert, non-toxic profile allows for straightforward waste handling, unlike more reactive or solvent-laden additives. We support recycling and offer advice on reusing clean containers, based on our own facility’s practices.
Customers sometimes ask for a 200㎡/g or 400㎡/g grade, wondering if more or less surface area means better results. Drawing from our practical work, we explain that HL-300’s balance is intentional: lower surface area variants typically thicken less and offer fewer adsorption sites, so their impact on gel structure or sag control drops. Meanwhile, higher grades can bring dusting, caking, or overdrying issues—even complicating mixing due to excess surface activity. HL-300 brings strong, repeatable performance across a useful range of viscosities, which reduces troubleshooting in formulation.
Surface chemistry distinguishes hydrophilic HL-300 from hydrophobic grades. Its uncoated, silicon-oxygen lattice offers strong hydrogen bonding in water-rich or polar media but will not provide the grease- or water-repellency of post-treated grades. For users building anti-settlement or anti-caking properties in water-based paints, HL-300 shows clear benefits. When customers need a water-repelling thixotrope for plastics or hot-melts, we point them to our specialty hydrophobic lines instead.
Particle size and aggregate strength influence real-world dispersion more than advertised. HL-300 maintains a narrow aggregate size, which survives processing—from pneumatic conveying to high-speed dispersion equipment—without rapid breakdown or fines creation. Lower quality fumed silicas sometimes show up as coarse specks in clear gels or as fine dust clouds on mixing, sabotaging efficient processing. The close particle size and aggregate strength we target in HL-300 limits dust release and reduces energy use for mixing.
Color and light transmission can make or break a final product’s appearance. HL-300 reliably delivers a white appearance with minimal tint; we keep iron, carbon, and trace oxide levels low, avoiding unwanted color drift or visible haze. Users in sealants and clear plastics care about this distinction, and we batch test accordingly.
Our experience puts us face-to-face with changing needs in end-user markets—regulatory pressure, sustainability targets, shifts in resin platforms, and rising performance standards. HL-300 continues to play a part in innovation because we work with R&D staff to optimize blends. Paint makers now demand lower VOC, and HL-300’s high purity and minimal organic residues assist them in hitting targets. When formulators try to switch to bio-based or recycled polymer carriers, HL-300 behaves consistently, supporting process transfer and stability.
Manufacturers looking for low-shear processing often struggle with rheology modifiers that cause rapid thickening, leading to air entrapment or processing slowdowns. HL-300’s moderate surface area eases blending, giving higher yield points without locking up equipment or requiring excess defoamers. We see this benefit during co-development work with sealant makers seeking faster fill times and easier line cleaning.
We also partner with customers facing residue or contamination issues from aging stocks of lower-quality fumed silica. HL-300 helps them clean up their formulations. Regular product support, technical troubleshooting, and coordinated lot selection mean customers fight fewer quality incidents and production snags—this isn’t a promise but the result of experience and attention to detail.
Our technical support staff hold years—sometimes decades—of hands-on batch troubleshooting under pressure. They know how HL-300 behaves when mixed at scale, sheared in high-solids slurries, or dried down in spray-applied coatings, and pass this knowledge on to customer R&D teams through in-plant trials and real-time process observations. Information sharing runs both ways: some of our process improvements come straight from end-user suggestions, which sharpen the next year’s HL-300 production quality.
Competitors may advertise knock-offs at lower price points, targeting bulk buyers on cost alone. In practical terms, we spend resources on analytical verification—regular microstructure and surface chemistry mapping—so a drum of HL-300 stays true to the expectations set over years of field use. Cheaper alternatives might show up in the market but fail when monitored for consistency, purity, or safety. HL-300 carries a record customers can trace, not just a name.
The fumed silica market evolves with tighter spec demands, shifting resin chemistries, and ever more scrutiny of supply chain reliability. We never treat HL-300 as a finished product that cannot improve. Feedback from resin producers, paint plants, and adhesive lines prompts us to keep optimizing our process. As analytical technologies progress, we upgrade our detection and control methods. For example, we now monitor trace contaminants via more sensitive spectrometry and have invested in digital process monitoring, all aimed at making HL-300 adapt to next-generation requirements.
We also invest in operator training, calibrating their tactile and visual skills to spot material deviations—a human touch that backs up automation. The team tracks bin swaps, process interruptions, and environmental changes affecting HL-300 output. Root cause investigations lead to tangible shifts in plant procedure, giving our product long-term dependability.
During tight market periods or supply chain shocks, existing customers have relied on us for clear communication and transparent inventory updates. HL-300’s production planning focuses on filling confirmed customer needs, not speculative stockpiling. Orders draw from current production, with batch histories and certificates always on hand. This approach has gained trust from industrial users, especially those who operate under just-in-time models and need predictable turnaround.
As global regulations on nanomaterials evolve, we follow local laws, international guidelines, and participate in industry consortia clarifying data for authorities and users. HL-300’s dossier, built from our own analytical and application work, supports customers’ documentation needs for REACH, TSCA, and similar regimes. Traceability, purity, and application experience mean HL-300 enables regulatory compliance as those standards tighten.
Behind every HL-300 shipment runs years of learning about fumed silica: the vital role of reliable supply, the make-or-break nature of true surface area control, and the practical link between microstructure and plant-scale performance. Chemists and production teams constantly seek material that reduces their workload, not complicates it.
HL-300 isn’t a commodity from our perspective. It supports customers who depend on fewer failures, smoother day-shifts, and safer operations. Those who try HL-300 for the first time often notice its influence on process efficiency and final product performance—whether it’s a smoother gel, a clearer resin, or a more resilient sealant.
Our work doesn’t end at shipment. We revisit processes, retrain staff, expand our analytical toolkit, and take feedback seriously. In an industry where details separate batch winners from the rest, HL-300 stands as an ongoing effort—not just a SKU on a catalog.
This approach—attention to real production needs and long-term relationships—underpins HL-300’s reputation. We take pride in every drum and every pallet, because we know the real world backgrounds of the users counting on it, and we shape each batch to meet those challenges.
