Fumes, silica Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 69012-64-2 |
| Product name | Fumes, silica |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial GradeElectronic 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 Fumes, silica
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Fumes, silica Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Fumes, silica
| Industry | Application | Process |
|---|---|---|
| Semiconductors | Production of monocrystalline silicon | Silicon powder is processed into high-purity monocrystalline silicon ingots via the Czochralski or float-zone method |
| Photovoltaics | Solar cell manufacturing | Silicon powder serves as a raw material for producing multicrystalline silicon ingots or monocrystalline silicon ingots, which are further processed into solar cells |
| Electronics | Semiconductor device fabrication | High-purity silicon powder is used to manufacture semiconductor devices such as diodes and transistors |
| Composites | Silicon-based composite production | Silicon powder is mixed with resins to produce high-strength, high-temperature-resistant composites |
| Ceramics | Specialty ceramic production | Silicon powder is blended with other oxides and sintered to produce high-temperature-resistant, high-strength specialty ceramics |
| Chemical industry | Catalyst support | Silicon powder functions as a catalyst support in various catalytic reactions |
| Grinding and polishing | Grinding paste formulation | Fine-grade silicon powder serves as an abrasive medium for precision grinding and polishing of metals, glass, and other materials |
| Metal casting | Alloy additive | Ultrafine silicon powder is added to metal alloys to enhance properties such as strength and wear resistance |
| Rubber industry | Reinforcing filler | Silicon powder acts as a reinforcing filler to improve the physical properties of rubber products |
Manufacturing Quality Control of Fumes, silica
| Detection Item | Common Testing Methods | Method Overview |
|---|---|---|
| Silicon Content (Purity) | X-ray Fluorescence Spectroscopy (XRF) | Uses X-rays to excite elements in the sample, generating characteristic fluorescence for quantitative analysis of silicon and other impurity elements. |
| Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) | After dissolving the sample, it is excited by a high-temperature plasma; element concentrations are determined by measuring the intensity of emitted spectral lines, providing precise quantification of silicon and impurities. | |
| Particle Size Distribution | Laser Diffraction Analysis | Based on laser scattering principles, measures scattered light intensity at different angles to calculate particle size distribution. |
| Sieve Analysis | Uses standard sieves to sieve silicon powder step by step, determining the mass percentage in each particle size range; suitable for coarse powder testing. | |
| Specific Surface Area | BET Method (Nitrogen Adsorption) | Measures nitrogen adsorption on the surface of silicon powder at low temperature; specific surface area is calculated using the BET theory. |
| Loose Bulk Density | Vibratory Compaction Apparatus Method / Funnel Method | Si powder is naturally filled into a graduated cylinder, weighed, and bulk density is calculated as mass per unit volume. Vibrated density is obtained by compacting the powder through vibration. |
| Vibrated Density | Tap Density Method (Vibration Compaction) | Sample is placed in a graduated cylinder and vibrated according to specified frequency and number of cycles; final volume is measured to calculate tapped density. |
| Oxygen Content | Pulse Heating Inert Gas Fusion - Infrared Absorption Method | High-temperature fusion of the sample under inert atmosphere releases CO/CO₂, which is detected by infrared absorption; oxygen content is calculated from the results. |
| Moisture Content | Karl Fischer Titration | Utilizes the quantitative reaction between iodine and sulfur dioxide in pyridine and methanol solution with water; moisture content is determined via titration. |
| pH Value | Water Suspension pH Measurement | Si powder is dispersed in deionized water, stirred, allowed to settle, then pH is measured using a pH meter. |
| Impurity Elements (e.g., Fe, Al, Ca) | ICP-OES or ICP-MS | After acid digestion or fusion treatment, samples are analyzed using inductively coupled plasma techniques to detect trace metal impurities with high sensitivity. |
| Surface Morphology | Scanning Electron Microscopy (SEM) | Uses an electron beam to scan the sample surface, producing high-resolution images to observe particle morphology, agglomeration, and surface features. |
| Crystallinity | X-ray Diffraction (XRD) | Analyzes the crystal structure of silicon powder to determine whether it is crystalline, amorphous, or contains other crystalline impurities. |
Technical Specifications of Fumes, silica
| Test Item | Specification |
|---|---|
| Appearance | Gray to black fine powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.2% |
| Odor | Odorless |
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 Fumes, silica
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of Fumes, silica
Industrial Fumes, silica 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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