Description

tert-Butyl-Methyl-Diethoxysilane is a specialized organosilicon compound, specifically a diethoxysilane derivative, with the CAS number 109144-58-3. This chemical serves as a versatile intermediate and coupling agent, valued for its ability to modify surfaces and polymers, enhancing properties like adhesion, hydrophobicity, and chemical resistance. It is primarily needed by manufacturers in the silicone polymer, advanced materials, and specialty coatings industries for developing high-performance products.

Application

• As a key intermediate in the synthesis of silicone resins and modified siloxanes.
• As a surface modifying agent for inorganic fillers (e.g., silica, glass) to improve compatibility with organic polymer matrices.
• As a coupling agent or adhesion promoter in sealants, adhesives, and composite materials.
• In the production of water-repellent (hydrophobic) coatings for construction and textile applications.
• For the silylation of organic compounds in pharmaceutical and agrochemical intermediate synthesis.
• As a precursor for specialty silane crosslinkers used in high-temperature polymer systems.

Basic Information

Product Name	tert-Butyl-Methyl-Diethoxysilane
CAS No.	109144-58-3
Molecular Formula	C9H22O2Si
Molecular Weight	190.36 g/mol
Synonyms	tert-Butyl(methyl)diethoxysilane; Diethoxy(tert-butyl)methylsilane; Methyl-tert-butyl-diethoxysilane; tert-Butylmethyldiethoxysilane; (tert-Butyl)(methyl)diethoxysilane; 1,1-Dimethylethyl(methyl)diethoxysilane; tert-C4H9(CH3)Si(OC2H5)2
EINECS	Contact for details

Quality Control

Our tert-Butyl-Methyl-Diethoxysilane undergoes rigorous quality testing to ensure compliance with industry standards. We implement strict in-process controls and final batch analysis to guarantee high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical 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 and highly volatile nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) 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
Purity (GC)	≥ 97.0%
Density (at 20°C)	0.85 - 0.87 g/mL
Refractive Index (n20/D)	1.405 - 1.410

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