| HS Code | 562876 |
| Product Name | ULTRASIL VN 2 / VN 2 GR |
| Chemical Name | Precipitated Silica |
| Appearance | White, free-flowing powder |
| Bet Surface Area M2g | 160 - 200 |
| Ph 5 Aqueous Suspension | 6.0 - 7.5 |
| Loss On Drying 105c Percent | 6.0 max |
| Sieve Residue 63um Percent | 0.5 max |
| Sio2 Content Dry Percent | 97.0 min |
| Dbp Absorption Cmg | 245 - 255 |
| Bulk Density Gl | 150 - 260 |
| Application | Reinforcing filler for rubber |
As an accredited ULTRASIL VN 2 / VN 2 GR factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | ULTRASIL VN 2 / VN 2 GR is typically packed in 20 kg multi-layer paper bags with polyethylene liners for moisture protection. |
| Container Loading (20′ FCL) | Container loading for ULTRASIL VN 2 / VN 2 GR (20′ FCL): typically 10,000–12,000 kg packed in palletized 25 kg bags. |
| Shipping | ULTRASIL VN 2 / VN 2 GR is shipped in multi-ply paper bags with polyethylene liners to protect against moisture, typically in 20 kg bags. Bags should be stored in dry, well-ventilated areas and handled carefully to prevent damage. Avoid exposure to humidity and temperatures above 40°C during transport and storage. |
| Storage | **ULTRASIL VN 2 / VN 2 GR** should be stored in a cool, dry, and well-ventilated area, away from moisture and direct sunlight. Keep containers tightly closed to prevent contamination. Avoid exposure to strong acids and bases. Store away from foodstuffs and incompatible materials. Always follow relevant safety guidelines and local regulations for chemical storage. |
| Shelf Life | ULTRASIL VN 2 / VN 2 GR has a shelf life of 24 months from production date if stored in cool, dry conditions. |
ULTRASIL VN 2 and VN 2 GR are precipitated silica grades engineered for use as reinforcing fillers in multiple industrial sectors. This application guide outlines direct downstream scenarios that rely on these materials for enhanced processing, compliance, and end-use properties.
Leading tire producers integrate these silica grades for reinforcing passenger, truck, and off-the-road tires. The controlled particle size and high dispersibility enable formulators to reduce rolling resistance and improve wet traction. Manufacturing teams select the grade and dosage depending on specific compound targets and process equipment. QC departments monitor batch consistency to maintain mechanical and safety specifications for each tire specification.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Manufacturers of premium footwear and safety soles adopt these silica grades to increase abrasion resistance, improve non-slip properties, and extend service life of polyolefin and rubber blends. Formulation and technical teams calibrate ratios to balance flexibility and hardness to meet performance benchmarks. Operational processes utilize silica's surface area to promote adhesion of the compound, especially in safety shoe and anti-static applications.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Producers of high-performance silicone sealants specify these silica types to enhance thixotropy, tack-free time, and mechanical integrity. The materials are engineered for minimal interference with vulcanization chemistry, ensuring stable curing and reduced risk of migration or syneresis. QC protocols ensure particle size and moisture content support uniform mixing and the final product's tear and elongation requirements.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Both silica grades enter as matting agents and rheology modifiers in premium coatings and printing ink formulations. These applications require strict control of particle distribution to prevent flocculation, haze, and sedimentation. Coating engineers tune the silica content to manipulate gloss levels, scratch resistance, and viscosity for target application methods such as spray, roller, or dip.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Major animal feed and premix manufacturers use these silica grades as anticaking and free-flow agents for vitamin, mineral, and enzyme premixes. The high absorbency helps prevent lumping and segregation during storage and transport. Production teams balance addition rates based on moisture, particle size, and hygroscopicity of the core active ingredients, preventing loss of nutritional value or process disruptions at customer sites.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Large-scale oral hygiene factories use these silica variants as abrasive, thickening, and cleaning agents. The unique morphology and controlled heavy metal content meet strict oral care standards. Technical and QA teams regulate the particle size to optimize cleaning (RDA/REA values), while keeping paste extrusion and stability properties within customer and regulatory review limits.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Competitive ULTRASIL VN 2 / VN 2 GR prices that fit your budget—flexible terms and customized quotes for every order.
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Making precipitated silica is as much a craft as it is a science. For decades, our factory floors have echoed with the methodical rhythm of refining and filtering every batch, checking pH and specific surface area, dialing in every detail that helps transform rubber compounds from average to exceptional.
ULTRASIL VN 2 and its granular counterpart, VN 2 GR, reflect a distillation of what chemists, engineers, and production managers have fine-tuned over years of tight collaboration with tire plants, technical rubber goods producers, and research partners. Watching how these products perform under everyday factory pressure is what helps us keep our silica practical, robust, and adaptable to new compounding trends.
Our focus is always on repeatability. In every bag marked ULTRASIL VN 2 or VN 2 GR, you’ll find silica with a well-characterized structure. Chemically, it’s a precipitated amorphous silica based on sodium silicate and proper acidification protocols. This process shapes the internal structure with high dispersibility, which matters in downstream mixing, especially in tire inner tread, sidewall, and high-performance applications.
Particle size distribution and specific surface area dominate the conversations during process audits. We’re not aiming for the finest surface possible without reason. Too much surface, and the factory mixing lines slow down; too little, and rubber property improvement drops off. VN 2 hits that practical midpoint for strength improvement and processing ease, which is why it shows up reliably in compounders’ formulas for passenger, truck, and specialty tires.
ULTRASIL VN 2 comes as a white, flowable powder. This format pairs well with traditional conveyor-fed batch mixers, internal mixers, and Banbury installations handling technical rubber goods. Where pneumatic conveying, dust control, or automated ingredient delivery takes priority, the granular form—VN 2 GR—offers measurable logistic and occupational safety benefits. Granules pour with less airborne dust and deliver precise dosing, especially in high-volume tire compound mills where material loss and handling speed matter.
On our lines, the differences between powder and granular versions come down to how each integrates in the customer’s setup. We have seen plants cut dust filter replacements and improve overall housekeeping just by shifting to VN 2 GR. For users with limited automation, the powder keeps things flexible for fast, small-batch changes. The chemistry stays the same—both rely on the same precipitation route and offer similar reinforcing behavior and interaction with silane coupling agents.
Every compounder chasing lower rolling resistance in tires recognizes the impact of silica-silane technology. VN 2 grades present the high-surface-area structure essential for this target. More surface means more polymer–filler interaction—if processed right, the result is real improvements in abrasion resistance and reduced heat build-up. Car makers push for softer rubber to improve riding comfort, but without the right silica, the tire lifespan shrinks. VN 2 provides an established balance—improvements in tensile and tear strength, cut resistance, and lower dynamic heat generation remain consistently documented by our customers.
It isn’t only about tires. Conveyor belts, rubber hoses, vibration mounts, and technical seals all benefit from higher modulus and toughness where VN 2 or VN 2 GR fit in the compounding profile. Custom formulations for anti-vibration applications draw on this grade due to its effect on hardening and resilience without excessive scorch risk. Our R&D feedback cycle always returns to this question: can a new grade clearly outperform VN 2 in side-by-side testing? Consistently, this material remains the reference standard for broad technical rubber use.
A key request we get from production engineers: keep mixing times in check, and avoid batch-to-batch variation. ULTRASIL VN 2 responds with its narrow particle size distribution, which translates directly to shorter dispersion time in mixing lines. This enables producers to meet throughput targets and cut down on compound rejections for visible defects.
Batching and blending silica should never waste time or create dust clouds in the plant. With VN 2 GR, granule flow properties take the pain out of automatic dosing and pneumatic feeding. This reduces not only product loss but also exposure risk—something every plant health and safety officer watches closely. Where customers rely on continuous rather than batch mixing, the reduced caking and better feed accuracy with VN 2 GR delivers consistent downstream results.
Factories working with powder grades always remain vigilant on dust mitigation. Our own experience shows that even with modern dust extractors, manual handling comes with inherent exposure risk. The transition, in certain plants, to VN 2 GR marked a direct reduction in air particulate readings on the shop floor, improved operator comfort, and lower cleaning frequency for processing areas. We keep working to reduce additive emission profiles across the silica portfolio, fitting with the rising focus on workplace safety and environmental compliance.
Energy consumption and water usage during manufacturing stay in focus for us. By optimizing precipitation and drying cycles, we support both market demand and sustainability metrics. Every kilogram of product must meet not only performance but also regulatory and environmental expectations.
As the primary manufacturer, our teams oversee each step from raw material intake to finished packaging. This means better accountability and consistent product fingerprint. Feedback loops from customer plants tell us where a shipment has performed above or below the historical average, and these insights feed right back into process correction. Logistics teams learn early that bag integrity, labeling clarity, and supply chain responsiveness drive actual plant efficiency. This isn’t a mindset that comes from reselling; it comes from being the one who sets up the reactor in the morning and signs off on QC reports at night.
ULTRASIL VN 2 and VN 2 GR are not speculative blends. They reflect a stable recipe, informed by real compounding work across continents and documented in test results supplied by our technical service engineers in direct partnership with users. Troubleshooting support, process audits, and on-site visits leave no ambiguity—users know who stands behind each batch.
Rubber compounders today face tightening specifications: rolling resistance, wet grip, abrasion, and processing uptime come under constant review. Sophisticated customers run dynamic mechanical analysis and compare candidate fillers by their impact on rebound resilience, heat buildup, and long-term cure stability. VN 2 responds to these industrial tests with a track record: it lifts modulus and tear properties without making mixing intractable or accelerating vulcanization inadvertently.
Unlike experimental grades, VN 2 holds up in production campaigns that last months, not just scale-up trials. End-users report sustained batch reproducibility, predictable cure profiles, and high-quality finished goods metrics over hundreds of tons of throughput. For tire producers shifting to green tires or silica-dominated tread formulations, this predictability transforms tight process windows from a headache into a manageable routine.
It’s easy to get lost chasing novelty in additives, reactivity, or microstructure. What keeps VN 2 at the center of so many technical rubbers’ blueprints is reliability blended with forward compatibility. Silica remains a pillar in evolving industry standards, especially as regulatory requirements on PAHs, process oils, and secondary ingredients change. The backbone of VN 2’s formula offers an anchor as customers investigate oil compatibility, polymer matrix upgrades, and novel coupling agents for even tougher regulatory and performance demands.
Nontoxic, noncombustible, and handled every day in plants from small custom mixers to the world’s largest tire groups, VN 2 fits the everyday reality of compounding shops. Processing teams know what to expect, which is half the battle in an industry driven by deadlines and statistical process control.
Process engineers and chemists inside our own walls share the same puzzles as those at customer plants. Every melt index drift, filter clog, or batch deviation becomes an internal learning moment. The compounders and plant managers using VN 2 and VN 2 GR keep us rooted in real-world success measures—like preventing unplanned shutdowns, maintaining mixing windows, and avoiding recipe reformulation for every product change.
Our technical support teams draw their strength from a shared language with production operators. Mixing speed, downstream handling, calendar sticking or die-slip, scorch risk—these stay at the front of conversations because these are the real showstoppers in the field. Our silica must clear these hurdles, not just on a test sheet but under the daily pressure of the line.
Not every customer plant features the same automation, mixer age, or logistical setup. Small-batch, high-mix producers often prefer VN 2 powder for its versatility in hand dosing or low-volume feeders. At the same time, high-volume, tightly automated lines gravitate to the granular product for its compatibility with centralized dust extraction, vacuum delivery, and high-throughput batching.
Both products run through identical chemical synthesis. What changes is the engineering of the final particle—powder for rapid integration, granules when pourability or clean conveying takes top billing.
Running quality checks is a daily act, not a compliance afterthought. Particle size analyzers, loss-on-drying tests, and silanol group titrations measure what will drive your mixing and rubber curing process. Out-of-spec product never leaves our factory, and unplanned process changes trigger immediate shutdowns and corrective action. Our customers expect this rigor by now—any plant manager can spot the temperament of a supplier who stands behind their product versus one who just ships boxes.
As tire formulations move toward higher silica content, especially under the pressure of fuel efficiency requirements, VN 2 proves adaptable with new silane systems or advanced coupling agents. We monitor and share compounding trends—such as growing use of compatible bio-based oils or the inclusion of functionalized polymers—that influence how our silica must behave. The expectation is not just steady performance, but also the flexibility to work with new processing aids and automated delivery technologies.
With regulatory standards shifting, we maintain clear traceability and robust documentation, ready for any audit or technical investigation that customers may require.
In any plant, trade-offs emerge between purity, complexity, and cost efficiency. Our focus on raw material purity, properly staged precipitation, and repeatable particle formation means that users can rely on each batch to behave the same way in every process window. This discipline forms the backbone of our promise: supply continuity, technical transparency, mutual accountability.
The value of ULTRASIL VN 2 and VN 2 GR doesn’t come from marketing talk. It comes from shipments weighed, sampled, and mixed every week, from real factories with real deadlines. When new regulations, polymers, or process constraints shift the landscape, our experience with hundreds of commercial campaigns provides the context needed for fast course correction. Recipes change, expectations rise, but the need for a trustworthy, well-made silica never goes away.
Ultimately, what brings compounders back to VN 2 is the concrete, measurable improvement in their production metrics, safety data, and final product performance—delivered not just in lab tests, but in every ton mixed under real-life factory pressures.
