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HS Code |
715480 |
| Chemical Name | Silica Gel |
| Appearance | White fine powder |
| Cas Number | 112926-00-8 |
| Particle Size | Typically 40–63 µm |
| Ph Range | 6.5–7.5 (in water suspension) |
| Specific Surface Area | 400–600 m²/g |
| Pore Diameter | about 60 Å (angstroms) |
| Loss On Drying | <7% (at 110°C) |
| Bulk Density | 0.5–0.7 g/cm³ |
| Application | Thin Layer Chromatography (TLC) |
| Solubility | Insoluble in water and organic solvents |
| Storage Conditions | Store in a dry place at room temperature |
| Odor | Odorless |
As an accredited TLC Silica Gel Powder factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The TLC Silica Gel Powder is packaged in a 500g white, sealed plastic jar with a blue screw cap and clear product label. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for TLC Silica Gel Powder: Packed in sealed drums/bags, maximizing capacity, ensuring moisture protection and secure transport. |
| Shipping | TLC Silica Gel Powder is shipped in tightly sealed containers to prevent moisture absorption and contamination. Packages are clearly labeled with chemical identification and hazard warnings. Standard shipping follows regulations for laboratory chemicals, with additional cushioning to avoid breakage. Expedited or temperature-controlled shipping options are available upon request. |
| Storage | TLC Silica Gel Powder should be stored in a tightly sealed container, in a cool, dry place away from moisture and incompatible substances. Avoid exposure to direct sunlight and sources of ignition. Store at room temperature and ensure good ventilation in the storage area. Proper storage preserves its adsorptive properties and prevents contamination or clumping due to humidity. |
| Shelf Life | TLC Silica Gel Powder typically has a shelf life of 3–5 years if stored in a tightly sealed container in a dry environment. |
Applications of TLC Silica Gel Powder in Industrial ManufacturingOur TLC Silica Gel Powder is produced to support the analytical and preparative needs of manufacturers with demanding separation, purification, and quality control requirements. The following application scenarios illustrate real-world downstream uses where our silica gel powder functions as a critical raw material, each reflecting established industry practices, compliance expectations, and unique process integration points. 1. Pharmaceutical Analytical Research – Thin Layer Chromatography (TLC) PlatesCommercial pharmaceutical and API manufacturing plants depend on TLC silica gel powder for in-process and final product quality control. It serves as the functional stationary phase in the coating of TLC plates, allowing for routine impurity profiling, identity verification, and stability study support. Drug manufacturers must ensure that applied silica gel conforms with both pharmacopoeial requirements and strict internal QC regimes, relying upon our specialized grades for consistent layer adhesion and particle uniformity during solvent development and analyte migration. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
2. Herbal and Botanical Extract Purity TestingIn the natural extracts sector, producers of botanicals such as ginkgo, ginseng, and herbal teas utilize fine-grade TLC silica gel powder to rapidly assess purity, adulterants, and characteristic compound fingerprints. As regulatory agencies mandate authentication of limited marker compounds in plant extracts, silica gel plates play a central role in batch release and internal quality control labs. Our powder assures batch reproducibility for chromatographic layer preparation, meeting visual spot separation and fluorescence criteria specific to natural product matrices. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
3. Food Additives and Sweetener Authenticity ScreeningGlobal producers of food additives, flavorings, high-intensity sweeteners, and colorants rely on laboratory-prepared TLC plates for rapid authenticity and contaminant screening of batches. Food-grade silica gel powder meets the stringent safety and purity demands required for analytical reagents in the food and beverage sector, ensuring reproducible migration rates and detection sensitivity for low-level impurities, counterfeits, or introgression of banned dyes during manufacturing. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
4. Forensic and Illicit Substance ScreeningGovernment-certified forensic labs and contract testing houses use silica gel powder to manufacture high-resolution TLC plates. These support fast-track screening for controlled substances, adulterants, and trace organic toxins in environmental, legal, and workplace testing workflows. Our process control ensures the powder’s particle distribution and binder compatibility support consistently sharp chromatographic resolution and clear detection of trace-level analytes, meeting the documentation standards required for chain-of-custody cases and legal submissions. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
5. Chemical Intermediates and Fine Chemical Manufacturing QCManufacturers producing dyes, pigments, monomers, and fine chemicals deploy TLC silica gel powder for routine monitoring of process intermediates and end products. In these applications, the silica gel’s physical consistency, adsorption characteristics, and batch-to-batch uniformity are critical for achieving reproducible separation of closely related compounds. Our industrial customers rely on this powder to prepare customized analytical plates, supporting fast stage-gate release and enabling corrective action prior to downstream blending or packaging. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
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Competitive TLC Silica Gel Powder 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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To anyone stepping into a laboratory for the first time, silica gel powder for thin layer chromatography (TLC) might look like just another reagent on the shelf. Over decades in chemical production, it becomes clear how much precision and care goes into every kilogram. We have spent years refining the process to deliver silica gel that consistently meets the exacting demands of professionals, researchers, and industries worldwide. This isn’t the kind of material you can take lightly—reproducible, high-quality results in TLC analysis depend directly on the performance of the silica powder. We see daily how small adjustments in production influence downstream results, from baseline flatness to plate sensitivity.
Our TLC Silica Gel Powder, specifically produced as Model TLC-60A, is designed with a particular focus on particle size distribution and surface activity. The average particle size sits around 10-15 μm. Through numerous internal tests, this range produces smooth chromatographic plates, minimizing streaking and tailing, so spot separation remains crisp.
We make each batch using controlled hydrolysis and subsequent drying, then micronize to the required grade. For TLC users, water content can make or break separation resolution. We include a moisture step to bring residual water content to below 10%, which keeps results consistent. Professionals following ISO or pharmacopeia protocols often rely on documented reproducibility, yet the outcome starts here in the batch rooms and the dryers, not at the bench or office desk.
Unlike larger granule silica for column chromatography, TLC powder needs to pack tightly, coat glass or plastic backing evenly, and bind with or without a binder. We use no calcium sulfate in this model, which matters if users need clean elutions—calcium can interfere with some dyes and stains. Stainless steel reactor linings and food-grade filtration keep metal contaminants out, something our QC lab verifies before shipment. Chemical purity, mostly as percent SiO2 (minimum 99.7%), stands as a badge of what a focused manufacturing effort looks like.
The real test of any product, as always, doesn’t happen inside a glossy brochure. It happens on the actual lab bench. TLC remains a backbone method for organic chemists and industrial analysts because it quickly provides reliable, visual feedback on compound progress, purity, and identity. Every minute spent fussing over streaks, slow runs, or runny spots wastes valuable time when making decisions.
Our powder’s porosity and pH profile (consistently between 6.5 to 7.5 in water) reflect direct feedback from researchers in dyes, pharmaceuticals, natural products, and forensic labs. Each sector faces unique challenges: The dye industry demands spotless background for color contrasts, while pharma organizations push for batch-to-batch regularity, as TLC still serves as an ID check outlined by pharmacopoeial monographs. Our batch records show how tightly the specifications need controlling—one shift in pH can change Rf values, jeopardizing the transferability of lab protocols.
Another aspect customers press us on is plate adhesion. Without proper texture and size grading, silica doesn’t stick well to glass or plastic. Users tell us they need plates that handle both high-speed elutions and robust post-run detection treatments (UV, iodine, sulfuric acid, iodine vapor, anisaldehyde sprays). The powder form gives flexibility for custom plate pouring, a necessity for R&D ventures not served by standard pre-coated plates. We have tested our powder countless times for edge lift and flake-off, knowing any fault points show up not during easy separations, but during those heavy multi-solute runs with strong developers.
Making silica gel powder for TLC isn’t just about copying a recipe from a textbook. From sourcing sodium silicate feedstocks through the acidification, washing, drying, and milling, there are layers of complexity industry outsiders seldom see. We manage particle growth by adjusting not only pH and reaction temperature, but also the addition rate and agitation speed. Some shift teams have worked on this process twenty years or more; their knowledge means the difference between a powder that plates well and one that filters or floats.
The quality checks on each lot track much more than particle size. We test for extractable ions, mechanical strength, binding behavior, and chromatographic activity. For example, the ability to resolve low-polarity compounds serves as a fingerprint for our powder. A few years back, a customer analyzing pesticide residues needed selectivity for a specific polar analyte. By tweaking the activation temperature and holding the milling time, we provided a special batch that met their demand—tiny adaptations like this rarely get mentioned in marketing but drive loyalty.
Plate consistency grabs the spotlight in university teaching labs too. Educators have told us how a bad batch throws off months of practical sessions: students forced to struggle with unclear plates lose faith in the process and the equipment. Less visible, but just as critical, is the demand from quality control labs in food safety and beverage testing. Here, facing stricter regulatory standards, the silica’s ability to discriminate closely related compounds can determine if a batch passes or fails.
Comparisons to other TLC silica powders often focus on the price per bag and published specs. Down in the plant, the distinction rests in our process control. Some producers skip steps for expedience, but we believe in honest reporting on what comes out of every reactor and drier. Our customers' plates show consistent streak-free, sharp spot separation—a fact users recount to us more than price competitiveness.
A big challenge comes when users attempt dense loading—some powders clump under normal humidity or leave “bald spots” on plates. We address this through a post-milling air classification step. This produces less dust and easier handling during coating, and at the user end, the plates form homogeneously. Cheaper alternatives sometimes claim comparable performance, but without this tight batch grading, reproducibility drops off and so does user trust.
Some imported versions cut corners on post-processing. We’ve seen samples where residual acid or alkali gives unpredictable results, sometimes corroding lab tools or causing false positives in spot tests. Our powder runs through repeated water washes and specific pH buffers, so users avoid these headaches. Every jar undergoes batch labeling traceable back through filtration logs, mill tests, and drying curve data.
Many commercial TLC powders add binders directly—for instance, gypsum or starch. Users have differing opinions here. Our standard model comes binder-free, giving maximum freedom for users to select their own, or produce binderless plates when a purer baseline is needed. Our technical team supports researchers if they want to add their own binders, offering practical advice on concentrations and mixing techniques learned from thousands of lab consults over the years.
Bench chemists, QC departments, and university labs all approach TLC with slightly different goals. A biotech startup checks for peptide purity in R&D, while a mature food manufacturer examines flavor and odor compounds for trace contaminants. Veterinary pharmaceutical companies need assurance that plate results match published standards, often audited for compliance. Each tests TLC powder for repeatability and performance in multiple solvents, temperature ranges, and detection steps.
Art conservation has recently emerged as a surprising user. Restorers use TLC to identify dye sources in pigments and textiles, comparing tiny flecks to museum standards. Here, low background noise in UV detection matters as much as separation, which means every trace impurity in the silica must remain minimal or risk clouding analytical results.
In environmental monitoring, labs tracking pesticide breakdown products in soil and water push our powder to the limits of its resolution. We’ve worked with them to fine-tune activation temperatures, adjusting microporosity and moisture to support low-level analyte detection.
Anecdotally, one partner running a startup in herbal extracts described frustration with irregular supplier batches. With inconsistent powder, reproducibility dropped, delaying product launches and customer shipments. Switching to consistent supply meant no more backtracking, fewer failed runs, and improved business flow.
Despite best efforts, issues can crop up. Users might see “hot spots” or uneven migration on first use. We guide them through practical fixes: rehydrating powder before use, screening for dust, checking solvent front heights, and verifying ambient humidity during plate pouring. All these steps, while tedious, mirror the level of real-world practice in the labs using our products. Chemists doing forensic work often reach out about false positives; we review production logs alongside their method details to spot the underlying cause, whether it relates to pH drift, solvent incompatibilities, or sample load. This open dialogue loops directly back to production modifications.
Issues with shelf life arise most often in hot, humid climates. Rather than relying solely on packaging, we recommend storing powder in air-tight, desiccated containers—as we do before shipping. Some users employ old or compromised desiccators, leading to clumping or loss of spreadability. We learned to communicate this need clearly up front, saving labs from wasted effort and spoiled runs.
Binder compatibility remains a recurring question from the field. Rather than keeping the process mysterious, we share techniques honed over years: adding binders in careful ratios, mixing gently to reduce air bubble formation, and spreading plates at moderate room temperature for lasting adhesion. These insights spring not from manuals but from thousands of hands-on batch trials and user troubleshooting sessions.
Another pain point involves heavy sample loading. Many competitors shy away from customer complaints once the sale is made. We walk users through stepwise loading, highlight optimal solvent systems, and point out how to treat powder gently to extend working life. We’ve gathered feedback from customers who tried cheaper alternatives and encountered bottlenecks; many come back after giving up on inconsistent products.
Much has changed in the field of analytical chemistry, yet the foundation stones remain the same. Manufacturing high-grade TLC silica gel powder is equal parts chemistry, art, and day-to-day vigilance. We aim to keep each lot true to form, not just for compliance but for user trust—the kind built only from repeat experience.
True confidence in TLC outcomes does not originate from published figures alone. It emerges from seeing sample spots break cleanly day in, day out, from batch one to batch hundreds. We maintain direct technical support and quality reviews, something our long-time customers rely on. Every user who calls about a challenging separation, or about a new regulatory requirement, drives us to keep refining process controls and test protocols.
TLC silica gel powder’s value comes from how well it supports real work—not the claims on a website, but the clarity of results, the absence of surprises, the durability of plates in harsh solvents, the way it keeps up with regulatory changes, and its dependability for both basic research and tightly audited QC approvals. We stand behind every shipment, knowing the paste-up shop, university bench, and production lab depend on each batch living up to decades of accumulated trust and practical performance.
Through all the advances in analytical science, the silica gel powder for TLC we supply remains a product with heritage, shaped by thousands of refinements, user encounters, and a commitment to never take the basics for granted. From the production plant to your benchtop, we know every detail counts.
