Description

Hexaethyl Diorthosilicate is a high-purity organosilicon compound, also known as hexaethoxydisiloxane. This chemical serves as a versatile and efficient silicon source in advanced material synthesis and surface modification processes. It is essential for manufacturers in the electronics, coatings, and specialty chemical industries seeking precise control over silicon deposition and cross-linking reactions.

Application

• Precursor for Sol-Gel Processes: Used in the synthesis of silica-based glasses, ceramics, and hybrid organic-inorganic materials.
• Surface Modification Agent: Imparts hydrophobic properties to surfaces in coatings, textiles, and fillers.
• Electronics & Semiconductor Manufacturing: Acts as a silicon source for chemical vapor deposition (CVD) and spin-on dielectric (SOD) applications.
• Adhesive & Sealant Formulations: Functions as a cross-linking agent to enhance thermal stability and mechanical properties.
• Catalyst and Reagent in Organic Synthesis: Employed in the preparation of other organosilicon compounds and as a protecting group in complex syntheses.
• Nanomaterial Synthesis: Key reactant in the controlled production of silica nanoparticles and mesoporous structures.

Basic Information

Product Name	Hexaethyl Diorthosilicate
CAS No.	2157-42-8
Molecular Formula	C12H30O7Si2
Molecular Weight	342.54 g/mol
Synonyms	Hexaethoxydisiloxane; Bis(triethoxysilyl) ether; 1,1,1,3,3,3-Hexaethoxy-1,3-disiloxane; Disiloxane, hexaethoxy-; Triethoxysiloxytriethoxysilane; Diethyl silicate dimer; Ethyl silicate (hexamer); TEOS dimer
EINECS	218-463-9

Quality Control

Our Hexaethyl Diorthosilicate is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee compliance with your technical requirements.

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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (Karl Fischer)	≤ 0.1%
Refractive Index (n20D)	1.380 - 1.390
Density (g/mL at 20°C)	1.00 - 1.05

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