TetraethyI orthocarbonate, CAS No. 78-09-1

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78-09-1

Catalog No. EBD2198549

CAS 78-09-1

Name TetraethyI orthocarbonate

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Basic Information

Synonyms: Tetraethylorthocarbonate Ethane,1,1',1'',1'''-[methanetetrayltetrakis(oxy)]tetrakis- TetraethyIorthocarbonate Tetraethoxymethane Teraethylorthocarbonate:Tetraethoxymethane (triethoxymethoxy)ethane

Molecular Formula: C9H20O4

Molecular Weight: 192.25

MDL Number: MFCD00009221

Categories: Materials Chemistry > Optoelectronic and Organic Semiconductor Materials > OLED and Organic Optoelectronic Precursors Synthetic Chemistry > Organic Building Blocks > Other Organic Building Blocks

Product Description:

Tetraethoxysilane (TEOS), with the CAS number 78-09-1, is an organosilicon compound with the chemical formula Si(OC₂H₅)₄. It is a colorless, flammable liquid with a characteristic ether-like odor. TEOS is a key precursor in sol-gel chemistry, where it undergoes hydrolysis and condensation reactions to form silicon dioxide (SiO₂) networks. Its primary industrial application is in the production of thin films, coatings, and glasses. In the field of materials science, TEOS is extensively used to fabricate silica-based dielectric layers, protective coatings, and optical waveguides, which are critical components in microelectronics, optoelectronics, and OLED device fabrication. It serves as a fundamental building block for creating high-purity, uniform silica matrices. Beyond its role as a material precursor, TEOS is also employed as a versatile cross-linking agent and as a starting material for the synthesis of other organosilicon compounds. It requires careful handling due to its flammability and potential to cause irritation upon contact with skin or eyes.

Physical Properties

Boiling Point: 159 °C(lit.)

Flash Point: 53 °C

Density: 0.915 g/mL at 20 °C

Solubility: Insoluble

Refractivity: n20/D 1.392(lit.)

Storage: 2-8°C

Safety Information

Packing Level: III

Hazard Category: 3

Transport Codes: 3272

Analytical Data

Appearance: clear colorless liquid