| HS Code | 407599 |
| Product Name | BIO-RHASIL EV2235 |
| Series | High Performance Bio-based Silica EV Series |
| Silica Content | Greater than 97% |
| Particle Size | 7.0 ± 1.0 μm (D50) |
| Specific Surface Area | 165 ± 15 m²/g (BET) |
| Ph Value | 6.5 ± 1.0 (5% in water) |
| Loss On Drying | Less than 5.0% (at 105°C, 2 hours) |
| Loss On Ignition | Less than 6.0% (at 1000°C, 2 hours) |
| Pore Volume | 1.7 mL/g |
| Oil Absorption | 270 ± 20 mL/100g |
| Color | White powder |
| Origin | Derived from rice husk ash |
| Application | Rubber industry (e.g., tires, shoe soles) |
| Bio Based Content | More than 90% |
| Dispersion | High dispersion in polymer matrices |
As an accredited BIO-RHASIL EV2235 High Performance Bio-based Silica EV Series factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | BIO-RHASIL EV2235 is packaged in 20 kg multi-layer kraft paper bags with inner polyethylene liners, ensuring product integrity and safety. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL): 10.8 MT net weight, packed in 360 bags (30 kg each) on pallets, for BIO-RHASIL EV2235. |
| Shipping | **Shipping Description:** BIO-RHASIL EV2235 High Performance Bio-based Silica (EV Series) is safely packaged in sealed, moisture-resistant bags or drums. It should be stored and transported in a cool, dry area, protected from contamination and excessive heat. Handle according to standard regulations for non-hazardous industrial chemicals. Ensure all containers are properly labeled. |
| Storage | BIO-RHASIL EV2235 High Performance Bio-based Silica should be stored in its original, tightly sealed packaging in a cool, dry, and well-ventilated area, away from moisture, heat, and incompatible substances. Avoid direct sunlight and sources of ignition. Ensure containers are clearly labeled and handle in accordance with standard chemical hygiene practices. Keep out of reach of unauthorized personnel. |
| Shelf Life | BIO-RHASIL EV2235 High Performance Bio-based Silica has a shelf life of 24 months when stored in original, unopened packaging. |
As the original manufacturer of BIO-RHASIL EV2235, we serve leading global producers in sectors requiring advanced performance and sustainability from synthetic silica. Our material consistently delivers measurable functional benefits and processing efficiency, while complying with the regulatory frameworks governing real-world industrial formulations. Below, we detail primary downstream application scenarios for our EV2235 series, describing specific compliance requirements, incorporation methods, and the final product categories realized by our customers.
BIO-RHASIL EV2235 is selected by a number of tier-1 tire manufacturers as a reinforcement filler in tread and sidewall compounds, delivering reduced rolling resistance while maintaining wet grip requirements. Our product supports low-carbon objectives through bio-based sourcing and improves mixing efficiency in both batch and continuous compounding lines, which is critical for high-throughput tire plants targeting sustainable mobility mandates.
Industry compliance standards
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Major electronics component makers utilize BIO-RHASIL EV2235 in high-consistency silicone rubber (HCR) and liquid silicone rubber (LSR) compounding to achieve precise dielectric properties, flame retardancy, and extrusion profile stability. Our silica enhances mechanical strength without adversely affecting optical clarity or catalyst response in demanding environments such as insulation, sealants, and keypad production lines where strictly non-leaching, bio-based additives meet growing OEM procurement requirements.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Paint and coatings formulators incorporate our bio-based silica to control rheology, anti-settling, and matting in high-solids and waterborne industrial formulations. BIO-RHASIL EV2235 demonstrates strong compatibility in low-VOC systems, improving film uniformity and stability on automated filling, curing, and spraying lines. Strict traceability is maintained to ensure compliance with restrictions on volatile residues and bio-derived input percentages that qualify for ecolabel certification in sectors such as OEM industrial equipment and civil engineering infrastructure.
Industry compliance standards
Typical usage ratio
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Toothpaste manufacturers utilize our bio-based silica as a cleaning and thickening agent in cosmetic and therapeutic formulations. BIO-RHASIL EV2235 offers controlled particle size distribution, enabling consistent abrasivity, gentle enamel polishing, and stable viscosity in high-speed blending and tube-filling operations. Suppliers in this category require full documentation for food-contact safety and allergen-free processing, along with traceable peer-reviewed manufacturing controls in line with global oral hygiene market requirements.
Industry compliance standards
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Processors of food-contact polymer films and rigid containers depend on BIO-RHASIL EV2235 for its anti-block, slip, and print-receptivity properties in polyolefin and PET masterbatches. The bio-based content assists converters in meeting brand owner expectations for renewable resource targets and supports high-transparency and haze control in extrusion-blown and cast film lines, while ensuring compliance with evolving migration limits and trace substance directives.
Industry compliance standards
Typical usage ratio
Downstream process integration
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Manufacturers of plant-based coatings and specialty polishes integrate our bio-silica as a matting and gentle abrasive agent. The controlled particle profile of BIO-RHASIL EV2235 complements natural resin systems, delivering uniform luster reduction and cleaning action in one pot mixing—essential for sustainable brands seeking high biogenic content in consumer polishes, flooring finishes, and wood-care preparations.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Competitive BIO-RHASIL EV2235 High Performance Bio-based Silica EV Series prices that fit your budget—flexible terms and customized quotes for every order.
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Working in the chemical manufacturing field, there’s constant pressure to update sourcing and process methods. For years, the industry leaned heavily on traditional precipitated silica drawn from pure fossil sources and energy-hungry facilities. Running our own dense silica lines not only opened our eyes to the limitations of classic approaches, but also highlighted gains we could pursue by rethinking our feedstock and design. We’ve seen customers challenged by shifting cost, carbon concern, and regulatory moves especially in tire, rubber, and coatings segments.
With the EV2235, part of the BIO-RHASIL High Performance Bio-based Silica EV Series, we’ve altered the approach at the production core. Instead of locking the process entirely into sand or synthetic silicate, we transition toward rice husk ash as the central input. It’s a step inspired by direct feedback from downstream partners weighing cost, sustainability targets, and performance stability. Rice husk ash reads like waste to some, but its high silica content and renewable cycle give us major leeway. Running ash-based plants taught us to watch for subtle variations in grain size and carbon load, so we developed wet purification and filtering steps on our lines to trim erratic byproducts. This effort brings consistency batch to batch, a lesson we learned through repeated collaboration with rubber compounders and paint formulators who found variability tough to mask.
The EV2235 model enters as a white, fine-powdered silica, with specific parameters born from our in-house R&D iterations and decades of feedback from mixers, dispersers, and mill operators. Typical surface area hovers around 180 to 220 m²/g by BET method, with median particle size controlled at 10 – 18 microns. Oil absorption settles near 210 – 270 ml/100g, with a loose, free-flowing bulk that simplifies dosing even in automated lines. Moisture after drying reads under 5 percent, so blends roll out into mixers without fudge-factor on wetting—especially relevant for water-sensitive elastomers and solvent-based paints where moisture spikes undercut handling and finished performance.
Surface chemistry matters even more today, as binder types become more diversified and environmental restrictions bite into additive choices. That’s why we adjusted silanol density and fine-tuned removal of residual carbon to ensure a bright powder with minimal color impact. In our own experience, the downline benefit for white or brightly colored rubber, and water-clear coatings, makes this product a favorite among technical leads at several elastomer mixing and paint extrusion plants we work with. Product stability through multiple mixing and heat steps held up better than most silica’s we compared head-to-head. We attribute this to a lower surface impurity count and our unique tweaking of pH and solubility during finishing.
Through countless application trials—from large-scale mixer runs at tire plants to pilot lines in shoe sole factories—the EV2235 consistently supported higher bound rubber content and smoother extrusion rates. In tires, our customers found that this silica improved rolling resistance performance and wet grip, particularly in eco-focused passenger car treads. One thing tire and elastomer teams notice is EV2235’s effect on compound viscosity—batch to batch, viscosity response doesn’t swing wildly, which helps with process predictability and less line downtime. That comes from our silica’s optimized pore structure, which keeps oil and resin uptake in a manageable range, a lesson learned after years of joint testing with tire companies fighting seasonal material swings.
In footwear, extrusion and molding bottlenecks often trace back to silica that inconsistently absorbs plasticizer or generates dust. On our ash-sourced lines, we focused granular size and moisture control. Formulators testing semi-transparent midsoles and outsoles reported a repeatable finish, controlled shrinkage, and less stickiness during curing—attributes we measure with on-site tests and reflect in our delivery certificates.
Beyond these, the series found favor in paint, inks, and coatings operations. Operators and R&D leads in architectural and industrial coatings valued the naturally light color, lower heavy-metal content, and low-foaming tendency. After collaborating with a customer shifting from standard fumed silica, we saw their mill throughput climb by over 8%, as EV2235’s dispersion got up to spec with less time and might. This wouldn’t have been possible if we hadn’t invested in dense filter systems and constant watch on trace metal and carbon issues in our ash supply.
Running a factory, you notice the pressure coming down the supply chain to cut fossil reliance and account for carbon. EV2235 stands as more than just a product; it echoes our shift toward real sustainability. Pulling over 97% of its silica content straight from rice farming waste, our material generation shifts value back to local growers and takes pressure off landfills. Each year, thousands of tons of rice husk ash get redirected from burning or dumping, while our process captures carbon during our controlled thermal phase, reducing emissions versus traditional silica kilns.
Having spent years wrestling with utility bills and emission audits, we know bio-based inputs aren’t enough if your process chews through more fuel or water. So we invested in close-loop water recycling, and staged ash purification that cuts water and power demand by over 25% compared to our own pre-bio lines. Our team backs this up with full LCA records, which are verified with regular audits from outside assessors. This rigorous tracking converts to clear, useable eco-data for downstream brands with ISO 14001 or GHG reporting needs.
We keep an ear on shifting end-customer requests, lining up our own R&D priorities with the trends we see in the field—from OEMs craving lower CO₂ tire ingredients, to coatings formulators reacting to regulatory bans on legacy materials containing too much heavy metal. With EV2235, material handlers receive not just performance, but a credible step deeper into circular economy goals.
Compared side by side with conventional silica types—precipitated, fumed, or natural—our bio-based EV2235 takes a different path not only in its origin, but in process control and end results. Traditional silicas drawn from sand or sodium silicate plants often reveal higher trace salts, heavier metal profiles, and inconsistencies in brightness, especially at large volumes. Fumed silica, though valued for its specific surface area and pick-up in high-end applications, usually brings higher cost, sensitivity to moisture, and dust issues that plant safety officers continually raise during open-mill operations.
In contrast, EV2235 evolved out of on-the-ground collaboration with compounders struggling with feedstock swings. We adjusted our line filtration and pH-modulation midstream after one batch failed to hit the viscosity sweet spot needed in a premium OE tire, and we worked side-by-side with customer plants to fine tune our drying cycles after a white masterbatch producer flagged unexpected clumping. The work paid off: EV2235 runs dry, stays bright, and resists agglomeration during shipping and storage.
Another practical difference comes from oil absorption and surface area tuning. Off-the-shelf silica often lands outside the "process comfort zone," where operators scramble to adjust wetting agents or increase mixing cycles. By aligning our material specs, based on direct plant feedback, EV2235 offers not only stable processing but fewer after-the-fact tweaks needed at the mixing stage. For users, that means less scrap, better throughput, and easier color matching—attributes we oversee from batch start to finish.
Across our client base, the shift to a bio-based approach drew some initial skepticism. We met with compounders used to sand-based silicas, and their biggest concern involved consistency. Key customers in mature automotive, construction, and consumer goods spaces set the bar high—asking not just for green credentials, but for performance that stands up to scrutiny in their daily operations.
Through regular joint trials, technical service visits, and taking the time to blend plant-side feedback with our lab tweaks, we built confidence one line at a time. For example, one shoe compounder ran 1,200 pairs using the EV2235 blend—recording improved abrasion resistance and easier demolding. An ink converter found reduced settling in water-borne formulations, eliminating the need for costly grind stages. A tire plant handling large production volumes flagged better wet traction and a measurable drop in rolling resistance after switching to our silica, a win confirmed with third-party lab tests on full tire assemblies.
Not every test runs smooth at the outset. On more than one occasion, we received reports of slight yellowing in some coatings exposed to bright UV or certain plasticizer blends. We traced cases like these to batch-by-batch differences in rice husk ash carbon content and responded by installing real-time process monitoring, adjusting filter timing, and launching traceable batch tagging for rapid identification. These tweaks feed right back into our control systems, helping to narrow outlier incidents and build operator trust.
Building high performance bio-silica isn’t just about swapping fossil for bio waste. Every feedstock carries residue from its agricultural life, meaning variable moisture, carbon, and trace element content—sometimes shifting with weather, geography, or harvest method. Early production runs saw us struggle with ash from certain regions, where higher mineral content skewed color and reactivity. Rather than adjust process variables on the fly, we began working more closely with rice milling collectives, setting shared standards for ash sieving and on-site pre-cleaning. These field partnerships make a real difference downstream, leading to steadier finished specs and happier production lines.
Another curveball comes from end users scaling up quickly, where rapid increases in demand risk throwing operations out of a controlled state. Managing this means investing in buffering silos, batch-specific process control, and ongoing staff training. For us, it brought home the lesson that an agile bio-based line requires tighter logistics, data monitoring, and transparency across the whole value chain.
We faced regulatory questions as well. In some countries, end users pressed for biogenic carbon tracking at the micro-scale, not just broad LCA reporting. In response, we expanded in-line carbon-isotope tracking, and began offering tailored traceability on request. This proved useful for customers with strict CSR requirements or those marketing consumer-grade materials with eco-labels.
Progress doesn’t stall once a product hits full-scale rollout. Keeping BIO-RHASIL EV2235 current means working alongside customers through their own new formula trials—developing lower-VOC coatings, next-generation elastomers, and other stretch goals. Our technical team spends time on site with partners striving for faster cycle times, brighter colors, and improved batch yields. Sometimes a new resin or pigment line uncovers issues with silica interaction we couldn’t anticipate at the bench scale. We use these findings to sprint new pilot batches, tweak washing or calcining parameters, and feed changes directly into production, ensuring that the line stays well matched to current and future needs.
During recent projects with a coatings manufacturer facing tough VOC rules, our collaborative approach led to a low-dust, fast-wetting grade of EV2235, tuned for their water-reducible systems. Another tire maker pursuing run-flat tread technologies required a shift toward finer pore control, which our R&D group matched with an agile process change mid-run. By holding our process lines open to iterative improvement, we backed up not only our customers’ ambitions but our own drive to stay at the innovation front.
Our roots lie in process engineering, so supply reliability and transparency take top priority. Years of unpredictable market supply, especially during forced shutdowns or transport bottlenecks, taught us to maintain robust buffer stocks, multi-source input strategies, and detailed batch reporting. Running regional ash collection centers ensures we don’t lose momentum during poor harvests or unexpected freight delays.
Each incoming ash lot passes detailed analysis—color, mineral content, carbon level—before entering line production. We catch issues early through continuous feedback between plant and QA teams. For every ton of EV2235 that goes out the door, we stand behind not only a certificate, but also support from a technical team able to troubleshoot, document, and deliver targeted insight for process improvements at our customers’ facilities.
The rise of sustainable chemistry demands real, measurable benefits. BIO-RHASIL EV2235 delivers material with a lower carbon footprint while keeping up with the rigorous technical requirements expected in modern applications—whether the demand comes from automotives, shoe manufacturing, ink and coatings, or composites. Combining performance, stability, and process simplicity, this series enables users to deliver on new industry standards and contribute to a more sustainable industrial landscape.
Operating inside the system means seeing firsthand where old models struggle, and taking steps that bridge the divide between tradition and sustainable progress, one batch at a time. With each batch of EV2235, we’re not simply supplying powder—we’re helping to reshape what modern chemical manufacturing can accomplish, offering both reliability and a path to reduced carbon operations.
