Description

Tetrapropoxysilane CAS NO 682-01-9 is a versatile organosilicon compound, specifically a tetraalkyl orthosilicate, widely used as a key precursor in sol-gel chemistry and surface modification. Its primary value lies in its ability to introduce silica networks and organic functionalities into materials, enhancing properties like adhesion, hydrophobicity, and chemical resistance. This product is essential for manufacturers and R&D teams in the coatings, electronics, and advanced ceramics industries seeking to develop high-performance, tailored materials.

Application

• Sol-Gel Precursor: A fundamental starting material for the synthesis of silica-based gels, thin films, and monoliths with controlled porosity.
• Surface Treatment Agent: Used to modify the surface properties of metals, glass, and minerals, improving adhesion for paints and coatings or imparting water repellency.
• Crosslinking Agent: Employed in polymer formulations, such as silicone resins and organic-inorganic hybrid materials, to enhance thermal stability and mechanical strength.
• Adhesion Promoter: Functions as a coupling agent in composite materials and sealants to strengthen the interface between inorganic fillers and organic polymer matrices.
• Electronic Materials: Serves as a dielectric layer precursor or a passivation agent in microelectronics and semiconductor fabrication processes.
• Catalyst and Reagent: Utilized in organic synthesis and as a catalyst support material due to its reactive alkoxy groups.

Basic Information

Product Name	Tetrapropoxysilane
CAS No.	682-01-9
Molecular Formula	C12H28O4Si
Molecular Weight	264.44 g/mol
Synonyms	Tetrapropyl Orthosilicate; Silicon Tetrapropoxide; Propyl Silicate; Tetra-n-propoxysilane; Tetrapropyl Silicate; TPOS; Orthosilicic Acid Tetrapropyl Ester; Tetrapropyloxysilane
EINECS	211-656-4

Quality Control

Our Tetrapropoxysilane is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including assay (purity), identity confirmation, and impurity profiling, to ensure it meets the high standards required for industrial and research applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and consistency.

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 from atmospheric moisture. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Density (20°C)	0.915 - 0.925 g/mL
Refractive Index (n20D)	1.395 - 1.405
Water Content (Karl Fischer)	≤ 0.1%

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