Octadecyltrichlorosilane | 112-04-09

Description :

Overview of Octadecyltrichlorosilane

Octadecyltrichlorosilane (CAS: 112-04-9) is a long-chain organosilane coupling agent widely used in surface modification, nanotechnology, semiconductor processing, and specialty chemical manufacturing. It appears as a clear to pale yellow liquid and reacts strongly with

with hydroxyl-containing surfaces such as glass, silica, and metal oxides to form durable hydrophobic layers.

Because of its trichlorosilane functional group, this compound can form highly ordered self-assembled monolayers (SAMs) on surfaces. These molecular coatings improve surface hydrophobicity, corrosion resistance, and adhesion properties. As a result, Octadecyltrichlorosilane is commonly used in advanced materials research, microelectronics fabrication, coatings technology, and industrial surface treatment applications.

In industrial silane chemistry, related coupling agents such as Triethoxyvinylsilane and Trimethoxymethylsilane are often used to enhance adhesion between inorganic surfaces and polymer matrices in coatings, sealants, and composite materials.

Applications of Octadecyltrichlorosilane

Surface Treatment & Hydrophobic Coatings

Octadecyltrichlorosilane is widely used to modify glass, silica, and metal surfaces to create water-repellent coatings.

• Forms self-assembled monolayers for hydrophobic surface treatment

• Improves resistance to moisture, contamination, and corrosion

• Used in optical coatings, glass treatment, and protective layers

Semiconductor & Microelectronics Industry

In semiconductor processing, the compound is used for surface functionalization and wafer preparation.

• Creates controlled organic monolayers on silicon wafers

• Improves surface uniformity for microfabrication processes

• Used in MEMS devices, sensors, and nanotechnology applications

Nanotechnology & Advanced Materials

Octadecyltrichlorosilane is widely used in material science research to engineer functional surfaces.

• Used to modify nanoparticles and nanostructured materials

• Helps control surface energy and molecular interactions

• Supports development of advanced coatings and nanomaterials

Coatings, Polymers & Adhesion Promoters

The compound also acts as a surface coupling agent to improve compatibility between inorganic materials and organic polymers.

• Enhances adhesion in coatings and sealants

• Improves durability of composite materials

• Used in specialty resins and advanced material formulations

Safety & Handling Guidelines

• Avoid contact with skin, eyes, and clothing

• Use chemical-resistant gloves, goggles, and protective clothing

• Handle in well-ventilated areas or under fume hoods

• Store in tightly sealed moisture-free containers

• Keep away from water, humidity, and strong oxidizing agents

• Follow COA and MSDS instructions during storage and handling

Where to Buy Octadecyltrichlorosilane?

Octadecyltrichlorosilane Manufacturer

High-purity Octadecyltrichlorosilane is supplied for semiconductor processing, surface modification, coatings technology, and nanotechnology applications.

Octadecyltrichlorosilane Supplier & Distributor

• Available in laboratory and industrial bulk packaging

• Suitable for surface chemistry, advanced materials, and silane coupling reactions

• COA, MSDS, and technical specifications available

Octadecyltrichlorosilane MSDS

• Moisture sensitive and may release corrosive hydrogen chloride fumes

• Causes irritation to skin, eyes, and respiratory tract

• Handle under dry and controlled conditions

• Store in cool, dry environments away from incompatible chemicals

• Refer to full MSDS for spill management and emergency procedures

Frequently Asked Questions (FAQs)

1. What is the molecular formula of Octadecyltrichlorosilane?

   Molecular Formula: C₁₈H₃₇Cl₃Si
   Molecular Weight: 387.93 g/mol
   
   

2. What is Octadecyltrichlorosilane used for?

   It is used for surface modification, hydrophobic coatings, semiconductor processing, nanotechnology, and advanced materials research.
   
   

3. Why is Octadecyltrichlorosilane used in nanotechnology?

   Because it forms self-assembled monolayers on surfaces, which help control surface chemistry, wettability, and molecular interactions.