Octadecyltrimethoxysilane Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 3069-42-9 |
| Product name | Octadecyltrimethoxysilane |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial GradeElectronic Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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 Octadecyltrimethoxysilane
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Octadecyltrimethoxysilane Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Octadecyltrimethoxysilane
| Industry | Application | Process |
|---|---|---|
| Coatings & Resins | Used as a silane coupling agent to improve adhesion between organic and inorganic materials | Added to coating or resin systems, where hydrolysis and condensation reactions form siloxane bonds to enhance adhesion |
| Construction Materials | Improves water resistance and durability of concrete, mortar, and similar materials | Incorporated during concrete mixing; reacts with cement hydration products to form a hydrophobic layer |
| Textile Industry | Applied for fiber surface treatment to enhance fabric water repellency and soil resistance | Formulated into a solution and applied to fabrics via immersion or spray coating, followed by drying to form a protective film |
| Electronics Industry | Used for surface treatment of semiconductor encapsulation materials to improve electrical insulation and stability | Applied onto surfaces during chip encapsulation and thermally cured to form a protective layer |
| Rubber Industry | Enhances interfacial bonding between rubber and fillers | Added during rubber compounding; chemically reinforces the bond between filler and rubber matrix |
Manufacturing Quality Control of Octadecyltrimethoxysilane
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) | Quantitative separation and detection of十八烷基三甲氧基硅烷 based on retention time and peak area against a certified reference standard. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration using iodine and sulfur dioxide to determine water content by stoichiometric reaction. |
| Acid Value | Acid-Base Titration with NaOH | Neutralization of acidic impurities using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Density at 25 C | Digital Density Meter | Measurement of mass per unit volume using oscillating U-tube principle calibrated with air and water. |
| Refractive Index at 20 C | Refractometry | Determination of light bending angle at air-sample interface using calibrated Abbe refractometer. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Comparison of sample color intensity against platinum-cobalt standard solutions in the visible range. |
| Residue on Ignition | Gravimetric Analysis | Weighing of non-volatile residue after high-temperature ashing at 800 C in a muffle furnace. |
| Chloride Content | Ion Chromatography (IC) | Separation and quantification of chloride ions using anion-exchange column and conductivity detection. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of total heavy metals after acid digestion by measuring absorbance of ground-state atoms at characteristic wavelength. |
| Methanol Content | Gas Chromatography (GC) with FID | Separation and detection of residual methanol using capillary column and flame ionization detector. |
| Viscosity at 25 C | Rotational Viscometry | Measurement of resistance to flow under controlled shear rate using spindle-type viscometer. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Determination of hydrogen ion activity using calibrated glass electrode and reference electrode. |
Technical Specifications of Octadecyltrimethoxysilane
| Test Item | Specification |
|---|---|
| Appearance | Clear to slightly hazy colorless liquid |
| Identification (1H-NMR) | Consistent with structure |
| Purity | ≥ 89.5% |
| Refractive Index（25°C） | - |
| Density（20°C） | - |
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 Octadecyltrimethoxysilane
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Octadecyltrimethoxysilane
Packaging of Octadecyltrimethoxysilane
Industrial Octadecyltrimethoxysilane 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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