Description

Tetraisopropyl Orthosilicate is a high-purity organosilicon compound, also known as tetra(isopropoxy)silane. This versatile chemical serves as a critical precursor for silica-based materials and coatings, offering excellent reactivity and purity for demanding industrial processes. It is essential for manufacturers in the electronics, specialty chemicals, and advanced materials sectors seeking reliable intermediates for synthesis and surface modification.

Application

• Silica Sol and Aerogel Precursor: A key starting material for the sol-gel synthesis of high-purity silicon dioxide (SiO₂) nanoparticles, films, and monolithic aerogels.
• Surface Modification and Coupling Agent: Used to modify inorganic surfaces (e.g., glass, metals) to improve adhesion, hydrophobicity, or compatibility with organic polymers.
• Electronic Chemicals: Employed in the semiconductor industry for spin-on glass (SOG) dielectrics, passivation layers, and as a source for chemical vapor deposition (CVD) of silicon oxide thin films.
• Catalyst and Reagent in Organic Synthesis: Functions as a silylating agent or catalyst in various organic transformations and pharmaceutical intermediate synthesis.
• Specialty Coatings and Binders: Imparts hardness, weather resistance, and adhesion in high-performance coatings, paints, and ceramic binders.
• Crosslinking Agent: Used to crosslink polymers, enhancing their thermal stability and mechanical properties in silicone resins and composites.

Basic Information

Product Name	Tetraisopropyl Orthosilicate
CAS No.	1992-48-9
Molecular Formula	C₁₂H₂₈O₄Si
Molecular Weight	264.43 g/mol
Synonyms	Tetra(isopropoxy)silane; Tetraisopropoxysilane; Isopropyl Silicate; Silicon Tetraisopropoxide; Tetra-iso-propyl Orthosilicate; TIOS; TPOS; Orthosilicic Acid Tetraisopropyl Ester
EINECS	217-886-0

Quality Control

Our Tetraisopropyl Orthosilicate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including GC and FTIR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with each shipment to guarantee it meets your specific application requirements.

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) and highly volatile; containers must be kept tightly sealed and away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Density (20°C)	0.90 - 0.92 g/cm³
Refractive Index (n20/D)	1.390 - 1.395
Water Content (Karl Fischer)	≤ 0.1%

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