Description

1,1,2,2-Tetramethylethyltrimethoxysilane is a specialized organosilicon compound, specifically a branched alkyltrimethoxysilane, known for its unique sterically hindered structure. This compound serves as a crucial coupling agent and surface modifier, providing enhanced hydrolytic stability and compatibility in demanding formulations. It is essential for manufacturers in the advanced materials, specialty coatings, and silicone rubber industries seeking to improve adhesion, dispersion, and performance under harsh environmental conditions.

Application

• Surface Treatment Agent: Used as a coupling agent for inorganic fillers (e.g., silica, glass fibers) in composite materials to improve dispersion and interfacial adhesion.
• Hydrophobic Coating Precursor: Acts as a key monomer in sol-gel processes to create highly water-repellent and anti-corrosion coatings for metals, glass, and ceramics.
• Silicone Rubber Modification: Imparts specific properties such as reduced viscosity, improved filler incorporation, and enhanced thermal stability in high-performance silicone elastomers.
• Adhesion Promoter: Enhances the bonding between organic polymers and inorganic substrates in sealants, adhesives, and potting compounds.
• Nanomaterial Functionalization: Employed to modify the surface of nanoparticles (e.g., TiO2, SiO2) to prevent agglomeration and tailor their compatibility with various matrices.
• Release Coating Intermediate: Serves as a building block in the synthesis of silicone-based release agents for labels, tapes, and industrial molding.

Basic Information

Product Name	1,1,2,2-Tetramethylethyltrimethoxysilane
CAS No.	142877-45-0
Molecular Formula	C9H22O3Si
Molecular Weight	206.36 g/mol
Synonyms	Neopentyltrimethoxysilane; (2,2-Dimethylpropyl)trimethoxysilane; Trimethoxy(2,2-dimethylpropyl)silane; 2,2-Dimethylpropyltrimethoxysilane; 1,1,2,2-Tetramethylpropyltrimethoxysilane; (Neopentyl)trimethoxysilane; NSC 172154
EINECS	Contact for details

Quality Control

Our 1,1,2,2-Tetramethylethyltrimethoxysilane is manufactured under strict 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 industry standards. Certificates of Analysis (COA) documenting all critical parameters 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, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) and highly volatile nature, the container must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation and moisture uptake.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	0.88 - 0.92 g/mL
Refractive Index (n20/D)	1.390 - 1.400

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