Description

Diisobutyldimethoxysilane is a specialized organosilicon compound widely used as a key intermediate and coupling agent in advanced material synthesis. Its bifunctional structure, featuring both alkoxy and alkyl groups, provides unique reactivity for modifying surfaces and polymers. This chemical is essential for manufacturers in the silicone, adhesive, and coatings industries seeking to enhance material properties such as hydrophobicity, adhesion, and cross-linking efficiency.

Application

• As a surface treatment agent for inorganic fillers (e.g., silica, minerals) to improve dispersion and compatibility in polymer matrices.
• As a coupling agent in silicone sealants, adhesives, and RTV (Room Temperature Vulcanizing) rubbers to enhance adhesion to various substrates.
• As a key intermediate in the synthesis of more complex silane derivatives and functionalized silicone oils.
• In the production of moisture-curable systems where it acts as a cross-linker, reacting with ambient moisture to form stable siloxane networks.
• For imparting water repellency and corrosion protection when used in protective coatings for construction and automotive materials.
• In the manufacture of release coatings and mold-making materials within the plastics and composites industry.

Basic Information

Product Name	Diisobutyldimethoxysilane
CAS No.	17980-32-4
Molecular Formula	C10H24O2Si
Molecular Weight	204.39 g/mol
Synonyms	Diisobutyldimethoxysilane; Dimethoxydiisobutylsilane; Diisobutyl Dimethoxysilane; DIBS; Silane, diisobutyldimethoxy-; Diisobutyl(methoxy)silane; (Diisobutyl)dimethoxysilane; 1,1-Diisobutyl-1-dimethoxysilane
EINECS	Contact for details

Quality Control

Our Diisobutyldimethoxysilane is produced under stringent quality management systems. Every batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and identity verification, to ensure it meets precise specifications and consistent performance for industrial applications. A Certificate of Analysis (COA) detailing all quality parameters is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic and highly volatile nature, the container must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) after opening to prevent moisture absorption and degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Density (20°C)	0.85 - 0.87 g/cm³
Refractive Index (n20/D)	1.405 - 1.415
Water Content (Karl Fischer)	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.