18643-08-8 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 18643-08-8 |
| Product name | 18643-08-8 |
| 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 18643-08-8
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 18643-08-8 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 18643-08-8
| Industry | Application | Process |
|---|---|---|
| Organosilicon Industry | Raw material for silane coupling agents | Used to synthesize silane coupling agents with specific surface activity, introducing hydrophobic groups via hydrolysis and condensation reactions |
| Materials Science | Surface modifier | Applied to treat inorganic fillers (e.g., silica, glass fiber) to improve compatibility with organic polymers |
| Textile Industry | Water- and oil-repellent finishing agent | Applied in fabric finishing processes to impart hydrophobic and oleophobic properties |
| Coatings and Paints | Weatherability additive | Incorporated into coating formulations to enhance moisture resistance and durability |
| Electronics Industry | Dielectric material modifier | Used for surface modification of semiconductors or insulating layers to improve dielectric performance and interfacial stability |
| Plastics and Rubber | Coupling aid | Facilitates bonding between inorganic fillers and polymeric matrices during the preparation of filled composites |
Manufacturing Quality Control of 18643-08-8
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies main component peak area relative to calibration curve using internal or external standard. |
| Chloride Content | Potentiometric Titration with AgNO3 | Measures chloride ions by argentometric titration using silver nitrate and a silver indicator electrode. |
| Acid Value | Acid-Base Titration with NaOH | Determines acidic impurities by titration with standardized sodium hydroxide solution using phenolphthalein indicator. |
| Water Content | Karl Fischer Coulometric Titration | Electrochemically quantifies water based on iodine generation stoichiometrically proportional to water content. |
| Residue on Ignition | Gravimetric Analysis after High-Temperature Ashing | Measures non-volatile inorganic residue remaining after combustion at 750-800 C. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-OES | Simultaneously quantifies trace metal elements by measuring characteristic atomic emission intensities in plasma. |
| Appearance | Visual Inspection | Assesses physical state, color, and clarity against standard reference under controlled lighting conditions. |
| Density | Digital Density Meter (Oscillating U-tube) | Determines mass per unit volume based on resonant frequency shift of a vibrating U-shaped tube filled with sample. |
| Refractive Index | Refractometry at 20 C | Measures bending of light through sample to determine refractive index using calibrated prism instrument. |
| Volatile Impurities | Gas Chromatography-Mass Spectrometry (GC-MS) | Identifies and semi-quantifies low-boiling impurities via retention time and mass spectral matching. |
| Free Silanol Content | 1H NMR Spectroscopy | Detects Si-OH protons by integration of characteristic signal around 1.5-2.5 ppm relative to internal standard. |
| Thermal Stability | Thermogravimetric Analysis (TGA) | Evaluates weight loss profile under controlled heating to assess decomposition onset temperature and residual mass. |
Technical Specifications of 18643-08-8
| Test Item | Specification |
|---|---|
| Appearance | White to almost white powder or lumps |
| Purity | >=98.0% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Refractive Index (n20/D) | 1.450–1.460 |
| Relative Density (20°C/25°C) | 0.82–0.84 g/cm³ |
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 18643-08-8
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 18643-08-8
Packaging of 18643-08-8
Industrial 18643-08-8 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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