Description

Silicic Acid, Ethyl Ester is a versatile organosilicon compound primarily used as a key intermediate in the synthesis of advanced silicone polymers and materials. Its value lies in its ability to introduce ethyl silicate functionality, which is crucial for modifying surface properties and enhancing material performance. This product is essential for manufacturers in the coatings, adhesives, and specialty chemical industries seeking to develop products with improved adhesion, water repellency, and thermal stability.

Application

• Silicone Resin Precursor: A fundamental building block for the production of ethyl silicate-based silicone resins used in high-temperature and protective coatings.
• Crosslinking Agent: Employed in silicone rubber and sealant formulations to improve cure characteristics and final elastomer properties.
• Surface Modification: Used to treat inorganic surfaces like glass, silica, and metals to enhance hydrophobicity and promote adhesion for subsequent layers.
• Binder for Refractory Materials: Acts as an inorganic binder in precision casting molds and refractory ceramics due to its gelling properties.
• Intermediate for Silane Coupling Agents: Serves as a starting material in the synthesis of various organofunctional silanes.
• Electronic Encapsulants: Utilized in the formulation of potting and encapsulation compounds for electronic components.

Basic Information

Product Name	Silicic Acid, Ethyl Ester
CAS No.	1109-96-2
Molecular Formula	C8H20O4Si
Molecular Weight	208.33 g/mol
Synonyms	Tetraethyl Orthosilicate; Ethyl Silicate; TEOS; Tetraethoxysilane; Silicon Ethoxide; Tetraethyl Silicate; Ethyl Orthosilicate; Silicic Acid Tetraethyl Ester
EINECS	214-169-8

Quality Control

Our Silicic Acid, Ethyl Ester is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay by GC, purity checks, and control of key impurities, to ensure it meets precise specifications for industrial and specialty applications. Certificates of Analysis (COA) documenting all critical 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, well-ventilated area at room temperature (15-25°C). This product is highly volatile and hygroscopic (moisture-sensitive). Keep away from heat, sparks, and open flame. Containers must be kept tightly sealed to prevent moisture absorption and evaporation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Specific Gravity (20°C)	0.933 - 0.937
Refractive Index (20°C)	1.382 - 1.386
Acidity (as HCl)	≤ 0.05%
Water Content (Karl Fischer)	≤ 0.2%

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