Description

Isobutylisopropyldimethoxysilane is a specialized organosilicon compound, specifically an alkoxysilane, valued for its role as a versatile coupling agent and surface modifier. Its molecular structure allows it to form stable bonds between inorganic materials and organic polymers, enhancing composite material performance. This chemical is essential for manufacturers in the silicone rubber, adhesive, sealant, and advanced material coating industries seeking to improve adhesion, dispersion, and mechanical properties.

Application

• As a coupling agent in mineral-filled composites (e.g., silica, clay) to improve filler dispersion and polymer matrix bonding.
• A key surface treatment agent for glass fibers, minerals, and metal oxides to enhance hydrophobicity and compatibility with organic resins.
• An intermediate in the synthesis of more complex silicone derivatives and functional silanes for specialized applications.
• Used in the formulation of silicone sealants and adhesives to modify rheology and promote adhesion to various substrates.
• As an additive in coatings and inks to improve scratch resistance, weather stability, and surface wetting.
• Employed in the production of silicone rubber to facilitate cross-linking and modify final product properties.

Basic Information

Product Name	Isobutylisopropyldimethoxysilane
CAS No.	111439-76-0
Molecular Formula	C9H22O2Si
Molecular Weight	190.36 g/mol
Synonyms	Dimethoxy(isobutyl)(isopropyl)silane; Isobutyl(isopropyl)dimethoxysilane; (Isobutyl)(isopropyl)dimethoxysilane; Silane, dimethoxy(isobutyl)(isopropyl)-; (Isobutyl)(isopropyl)silane, dimethoxy-; Isobutylisopropyl dimethoxysilane; 111439-76-0
EINECS	Contact for details

Quality Control

Our Isobutylisopropyldimethoxysilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and identity verification, to ensure it meets precise customer specifications and consistent performance. Certificates of Analysis (COA) documenting purity, assay, and key physical properties are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture. Keep away from strong bases and incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	0.85 - 0.87 g/mL
Refractive Index (n20/D)	1.400 - 1.405

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