Tetraethyl orthosilicate

Tetraethyl orthosilicate

TEOS; Silicon tetraethoxide; Tetraethoxysilane

CAS 78-10-4

Chemical Formula Si(OC₂H₅)₄

Molecular Weight 208.33 g/mol

Tetraethyl orthosilicate (TEOS) is a chemical compound, specifically an ester of orthosilicic acid, used as a precursor in the synthesis of silica-based materials, including silica nanoparticles and hydrogels. It is also used in the Sol-Gel process for creating dense glass samples. 
 

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Industrial Uses

1. Performance Chemicals

  • Sol-Gel Chemistry: TEOS is a key ingredient in the sol-gel process, a method for producing materials with controlled structures and properties. It is hydrolyzed (reacts with water) and then undergoes condensation (forming a network) to create a silica-based gel.
  • Semiconductor Industry: TEOS is used as a precursor for depositing silicon dioxide (SiO2) films in the semiconductor industry. These films are used as insulators and for other purposes in microelectronic devices.
  • Zeolites: TEOS serves as a silica source for synthesizing zeolites, which are porous crystalline aluminosilicates with various applications. 
  • Aerogel Production: TEOS is a key component in the production of aerogels, which are ultralight, porous materials with unique properties. 
  • Crosslinking agent: TEOS is used as a crosslinking agent in silicone polymers, enhancing their mechanical properties and durability.

 

 

Specifications

ASSAY 99%
Appearance Colorless, transparent liquid
Odor Ethereal, alcohol-like
Boiling Point 170°C
Melting Point -77°C
Density 0.933 g/cm3
Solubility Insoluble in water (reacts slowly with hydrolysis); miscible with alcohols, ethers
Viscosity 1.2 mPa·s at 25 °C
Flash Point 46°C

Hazard Symbols

Flammables
Acute Toxicity
Irritants/Sensitisers/Other Hazards

FAQs

1. What is the current price of Tetraethyl orthosilicate in India?
The price of Tetraethyl orthosilicate can vary based on factors such as purity, quantity, etc. For the most accurate and competitive pricing, please contact us at +91.6301 00 6301 directly for a customized quote tailored to your needs.

2. Where can I buy Tetraethyl orthosilicate in India?
You can purchase Tetraethyl orthosilicate from MULTICHEM, a leading exporter with a reputation for quality and reliability. We provide convenient options for bulk orders and direct shipments across global markets. For more details on how to place an order, please visit our website or contact our sales team.

3. What is the minimum order quantity (MOQ) for Tetraethyl orthosilicate? 
Our minimum order quantity (MOQ) for Tetraethyl orthosilicate is designed to cater to both small-scale and large-scale needs. The MOQ depends on the packing size of the product which could range from 25 kg to 250kg.

4. How can I ensure the quality of Tetraethyl orthosilicate supplied by Multichem?
We adhere to stringent quality control processes to ensure that our products meet the highest standards of purity and effectiveness. They undergo rigorous testing and quality checks to guarantee that they comply with industry specifications. We provide a Certificate of Analysis (CoA) with every shipment to ensure transparency and quality assurance.