Description

sec-Butyl-(Isobutyl)-Dimethoxysilane is a specialized organosilicon compound, a dialkoxysilane derivative, that serves as a crucial coupling agent and intermediate in advanced material synthesis. Its molecular structure, featuring both sec-butyl and isobutyl groups, provides unique steric and electronic properties for modifying surfaces and polymer matrices. This chemical is essential for manufacturers in the silicone polymer, adhesive, and specialty coatings industries seeking to enhance material compatibility, adhesion, and performance.

Application

• As a surface modifying agent for inorganic fillers like silica and glass fibers in composite materials.
• As a key intermediate or crosslinking agent in the synthesis of specialty silicone resins and polymers.
• For improving adhesion between organic polymers and inorganic substrates in sealants and adhesives.
• In the formulation of release coatings and mold-making materials.
• As a precursor for silsesquioxanes and other nanostructured hybrid materials.
• For hydrophobic treatment of surfaces in construction and protective coatings.
• In research and development for novel silane-based functional materials.

Basic Information

Product Name	sec-Butyl-(Isobutyl)-Dimethoxysilane
CAS No.	126990-31-6
Molecular Formula	C10H24O2Si
Molecular Weight	204.39 g/mol
Synonyms	Dimethoxy(1-methylpropyl)(2-methylpropyl)silane; (sec-Butyl)(Isobutyl)dimethoxysilane; 1-Methylpropyl(2-methylpropyl)dimethoxysilane; sec-Butylisobutyldimethoxysilane; Isobutyl(sec-butyl)dimethoxysilane; (Isobutyl)(1-methylpropyl)dimethoxysilane; sec-C4H9(i-C4H9)Si(OCH3)2
EINECS	Contact for details

Quality Control

Our sec-Butyl-(Isobutyl)-Dimethoxysilane is produced under stringent quality management protocols. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications for industrial and R&D applications. Certificates of Analysis (COA) documenting all critical quality parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive) and should be stored under a dry, inert atmosphere (e.g., nitrogen or argon) in a cool, well-ventilated area. Recommended storage temperature is 2-25°C. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	0.84 - 0.86 g/mL
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.