Description

Tetrabutyl Orthosilicate is a versatile organosilicon compound, also known as tetrabutoxysilane. It serves as a crucial precursor for silicon dioxide (SiO₂) and other inorganic-organic hybrid materials, offering controlled reactivity for advanced material synthesis. This chemical is essential for manufacturers and R&D facilities in the coatings, electronics, and specialty chemical sectors seeking a reliable source of high-purity silicon alkoxide.

Application

• Precursor for Sol-Gel Processes: Used to synthesize silica gels, thin films, and nanoparticles for optical, protective, and electronic coatings.
• Crosslinking Agent: Functions as a crosslinker in silicone polymers and resins to enhance thermal stability and mechanical properties.
• Adhesion Promoter: Improves the adhesion of coatings and sealants to various substrates, including metals and glass.
• Water Repellent Treatments: A key component in formulations for fabric, stone, and construction material waterproofing.
• Electronic Materials: Employed in the production of spin-on glass (SOG) dielectrics and passivation layers in semiconductor manufacturing.
• Catalyst and Reagent: Acts as a reagent in organic synthesis and as a catalyst support modifier.

Basic Information

Product Name	Tetrabutyl Orthosilicate
CAS No.	4766-57-8
Molecular Formula	C16H36O4Si
Molecular Weight	320.54 g/mol
Synonyms	Tetrabutoxysilane; Butyl Silicate; Silicic Acid Tetrabutyl Ester; Tetra-n-butyl Orthosilicate; Orthosilicic Acid Tetrabutyl Ester; TBOS; Tetrabutyl Silicate
EINECS	225-323-5

Quality Control

Our Tetrabutyl Orthosilicate is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay and impurity profiling, to ensure it meets precise specifications for your application. Certificates of Analysis (COA) documenting purity, identity, 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 by atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Density (20°C)	0.99 - 1.01 g/cm³
Refractive Index (n20D)	1.410 - 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.