Isobutyltrimethoxysilane | 18395-30-7

Description :

Overview of Isobutyltrimethoxysilane

Isobutyltrimethoxysilane (CAS: 18395-30-7) is an important organosilane coupling agent widely used in coatings, sealants, adhesives, construction chemicals, and polymer modification. It appears as a clear, colorless liquid and is valued for its ability to create strong chemical bonding between organic polymers and inorganic surfaces such as glass, silica, and metal oxides.

Due to its reactive methoxy groups, this compound can hydrolyze and form stable siloxane bonds, improving adhesion, moisture resistance, and long-term durability of industrial formulations. Isobutyltrimethoxysilane is widely used in surface treatment processes, hydrophobic coatings, filler modification, and specialty material manufacturing.

In many advanced formulations, silane coupling agents such as Triethoxyvinylsilane and Octadecyltrichlorosilane are also used to enhance surface compatibility, coating performance, and water repellency in industrial applications.

Applications of Isobutyltrimethoxysilane

Surface Treatment & Coupling Agent

Isobutyltrimethoxysilane is commonly used as a coupling agent to improve bonding between inorganic materials and organic polymers.

• Enhances adhesion between fillers and polymer matrices

• Improves mechanical strength of composite materials

• Used for surface modification of silica, glass fibers, and mineral fillers

Coatings & Water-Repellent Formulations

The compound is widely used in industrial coatings and protective formulations where hydrophobic surfaces are required.

• Improves moisture resistance of coating systems

• Helps create durable water-repellent layers on surfaces

• Used in architectural coatings, protective coatings, and sealants

Construction & Building Materials

Isobutyltrimethoxysilane is used in the construction chemical industry to enhance durability of building materials.

• Applied in concrete and masonry protection systems

• Improves resistance against water penetration

• Used in sealants, grouts, and surface treatment formulations

Polymer & Composite Manufacturing

In polymer processing, this compound helps improve compatibility between inorganic fillers and organic polymers.

• Used in rubber, plastics, and polymer composites

• Enhances dispersion of mineral fillers in polymer matrices

• Improves durability and performance of industrial materials

Adhesives & Sealants

Isobutyltrimethoxysilane is also used in adhesive and sealant formulations where strong substrate bonding is required.

• Enhances adhesion to glass, metals, and ceramics

• Improves moisture resistance of adhesives

• Used in industrial bonding and assembly applications

Safety & Handling Guidelines

• Avoid contact with skin, eyes, and clothing

• Use gloves, goggles, and protective equipment while handling

• Handle in a well-ventilated area

• Store in tightly sealed containers in a cool and dry environment

• Keep away from moisture and strong oxidizing agents

• Follow COA and MSDS instructions carefully

Where to Buy Isobutyltrimethoxysilane?

Isobutyltrimethoxysilane Manufacturer

ChemicalBull supplies high-purity Isobutyltrimethoxysilane suitable for coatings, polymer modification, surface treatment, and construction chemical applications.

Isobutyltrimethoxysilane Supplier & Distributor

• Available in laboratory and bulk packaging

• Suitable for industrial coatings, sealants, and composite manufacturing

• COA, MSDS, and technical specifications available on request

IsobutylTrimethoxysilane MSDS

• May cause irritation to skin, eyes, and respiratory tract

• Avoid inhalation of vapors or direct contact

• Use appropriate PPE during handling

• Store in a dry, ventilated place away from incompatible materials

• Refer to the complete MSDS for emergency handling and spill procedures

Frequently Asked Questions (FAQs)

1. What is the molecular formula of Isobutyltrimethoxysilane?

   Molecular Formula: C₇H₁₈O₃Si
   Molecular Weight: 178.30 g/mol
   
   

2. What is Isobutyltrimethoxysilane used for?

   It is used as a silane coupling agent for surface treatment, coatings, adhesives, polymer composites, and construction chemicals to improve adhesion and moisture resistance.
   
   

3. Why are silane coupling agents used in coatings and composites?

   They help bond inorganic materials with organic polymers, improving mechanical strength, durability, and environmental resistance.
   
   

4. Is Isobutyltrimethoxysilane moisture sensitive?

   Yes. It can hydrolyze in the presence of moisture, so it should be stored in sealed containers and handled under controlled conditions.
   
   

5. Which industries commonly use Isobutyltrimethoxysilane?

   Major industries include construction materials, coatings, adhesives, polymer composites, and specialty chemical manufacturing.