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Octyltriethoxysilane CAS 2943-75-1
Overview
Octyltriethoxysilane, featuring a long 8-carbon alkyl chain, is a highly effective, clear, colorless monomeric alkylsilane. When applied to porous inorganic substrates, its low molecular weight allows for deep penetration. Upon moisture-triggered hydrolysis, it releases benign ethanol and chemically bonds with the substrate, forming an invisible, breathable, and highly durable hydrophobic (water-repellent) barrier.
Product Description
Octyltriethoxysilane, featuring an 8-carbon alkyl chain, is a highly effective, monomeric alkylsilane. When applied to porous inorganic substrates, its low molecular weight allows for deep penetration. Upon moisture-triggered hydrolysis, it releases benign ethanol and chemically bonds with the substrate, forming an invisible, breathable, and highly durable hydrophobic (water-repellent) barrier.
At Shandong Yinglang Chemical Co., Ltd., established in 2016, we supply bulk volumes of High-Purity Octyltriethoxysilane (≥ 98.0%) to global construction chemical formulators and advanced mineral pigment manufacturers. Benefiting from its high flash point, this product is shipped safely as Non-Dangerous Goods. Our silane guarantees superior chloride-ion protection for critical infrastructure and unparalleled dispersion efficiency for premium titanium dioxide.
For deep concrete penetration and flawless pigment coating, low polymer content and high purity are essential. Typical specifications:
| Purity (Octyltriethoxysilane) | ≥ 98.0% |
|---|---|
| Color (Pt-Co) | ≤ 20 |
| Density (at 20°C) | 0.870 - 0.880 g/cm³ |
| Refractive Index (at 20°C) | 1.415 - 1.420 |
| Moisture | ≤ 0.1% |
- Concrete Water Repellents: The gold standard active ingredient in penetrating silane sealers. Protects bridges and highways from water ingress, freeze-thaw damage, and rebar corrosion caused by de-icing salts.
- Pigment & Mineral Modification: Extensively used to coat Titanium Dioxide (TiO2) and ATH. The octyl chain renders minerals highly hydrophobic, improving their dispersion in masterbatches and cosmetics.
- Advanced Coatings: Formulated into paints and coatings to drastically improve weatherability and long-term water repellency.
Unlike traditional film-forming sealers (like acrylics or epoxies) that sit on the surface and degrade under UV light, Octyltriethoxysilane physically penetrates deep into the concrete capillary pores. It reacts with the alkaline cement matrix to form a permanent, breathable siloxane network. This ensures internal moisture can escape as vapor, while external liquid water and corrosive chloride ions are completely repelled, extending the lifespan of critical infrastructure by decades.
As a highly stable liquid with a high flash point, we offer cost-effective and safe bulk packaging for global ocean freight:
- 1000 KG IBC Totes (Highly recommended for massive construction chemical formulators).
- 180 KG / 190 KG Heavy-duty PE or Steel Drums (Tightly sealed to prevent moisture contact).
- ISO TANKS (20 MT) available for continuous industrial procurement.
Contact us today for the latest FOB/CIF pricing, detailed COA, and logistics estimates for your formulation facility.
Request a Bulk Quote Email Tech & Logistics Team
PACKING AND DELIVERY
Packing and delivery
We offer secure and compliant packaging for a wide range of chemical products, from laboratory bottles (100 mL, 250 mL, 500 mL) to customized bulk containers. All shipments follow international hazardous goods standards and include complete documentation such as COA and SDS. With reliable global logistics partners, we ensure safe, fast, and efficient delivery by air, sea, or land according to customer needs.
FAQ
Q1: What documents and certifications do you provide?
A Standard shipment includes COA (Certificate of Analysis) and MSDS (SDS). We also provide ISO 9001 certification and support third-party inspections like SGS or BV upon request.
Q2: Do you provide custom synthesis or formulation services?
A Yes. If you have specific purity requirements or a unique formulation, our R&D team can provide custom synthesis and adjust the stabilizers/inhibitors to meet your technical specifications.
Q3: What are your terms of payment?
A
For Orders ≤ $1,000: 100% in advance.
For Orders > $1,000: 30% T/T in advance, and the balance before shipment or against the copy of B/L. Irrevocable L/C at sight is also acceptable for bulk orders.
Q4: How long is your price valid?
A Chemical prices fluctuate due to the changes in raw material costs and exchange rates. Please contact our sales team for the latest real-time quotation.
Q5: What packaging and shipping ports are available?
A
We normally ship from Qingdao, Shanghai, or Ningbo.
Standard packaging includes 200kg Drums or 1000kg IBC Totes. We ensure strict safety compliance for both general and hazardous chemical cargoes.
Q6: It's my first time importing chemicals — can you help?
A Absolutely. Importing chemicals requires specific documentation. Our experienced logistics team will assist you with the entire process, including handling customs clearance documents and arranging the most suitable shipping method.