Silicic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 7699-41-4 |
| Product name | Silicic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for Silicic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Silicic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Silicic acid
| Industry | Application | Process |
|---|---|---|
| Construction Materials | Concrete hardener | Incorporated into cement paste to promote hydration |
| Foundry Industry | Binders (for molding sand) | Mixed with sand and cured to form molds |
| Chemical Synthesis | Precursor for silica gel and precipitated silica production | Acidification or thermal decomposition precipitation |
| Textile Printing & Dyeing | Component of flame-retardant finishing agents for fabrics | Impregnation-drying-fixing process |
| Papermaking Industry | Paper filler and strength enhancer | Added during pulping and uniformly dispersed |
| Ceramic Manufacturing | Flux in glazes | Cofired with other minerals |
| Water Treatment | Flocculant and precipitant for heavy metal ions | Dosed and mixed after pH adjustment, followed by sedimentation |
| Pharmaceutical Excipients | Component of dental impression materials | Crosslinked with alginate to form gels |
Manufacturing Quality Control of Silicic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Silicic Acid Content | Acid-Base Titration | Quantifies total acidic Si-OH groups via titration with standardized NaOH using phenolphthalein indicator. |
| Total Silica (SiO2) | Gravimetric Analysis | Precipitates silica as ammonium molybdosilicate, followed by ignition to SiO2 and weighing. |
| pH | Potentiometric Measurement | Measures hydrogen ion activity using calibrated glass electrode in aqueous solution. |
| Iron (Fe) | ICP-OES | Determines Fe concentration by measuring atomic emission intensity at characteristic wavelengths after plasma atomization. |
| Aluminum (Al) | ICP-OES | Quantifies Al via element-specific emission lines following high-temperature plasma excitation. |
| Sodium (Na) | Flame Photometry | Measures Na concentration based on intensity of emitted light at 589 nm when atomized in flame. |
| Chloride (Cl-) | Argentometric Titration | Titrates Cl- with AgNO3 using potassium chromate indicator to detect endpoint via Ag2CrO4 precipitate formation. |
| Sulfate (SO4^2-) | Barium Sulfate Gravimetry | Precipitates SO4^2- as BaSO4, filters, dries, and weighs the insoluble residue. |
| Heavy Metals (as Pb) | Dithizone Colorimetry | Forms colored chelate complex with Pb under controlled pH; absorbance measured by UV-Vis spectrophotometry. |
| Water Content | Karl Fischer Titration | Quantifies water via stoichiometric reaction with iodine and sulfur dioxide in pyridine/methanol medium. |
| Appearance | Visual Inspection | Assesses physical state, clarity, and presence of visible particulates or phase separation against standard reference. |
| Density | Hydrometer or Digital Densitometer | Measures mass per unit volume at specified temperature using calibrated mechanical or oscillating U-tube instrument. |
Technical Specifications of Silicic acid
| Test Item | Specification |
|---|---|
| Appearance | Colorless to pale yellow viscous liquid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Acid Value (mg KOH/g) | 120–150 mg KOH/g |
| Solubility | Miscible with water, insoluble in organic solvents |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Silicic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of Silicic acid
Industrial Silicic acid Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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