Tetraethoxysilane (TEOS)

The Tetraethoxysilanes (TEOS) are silicon compounds that contain an oxygen bridge from silicon to an organic group, for example, Si-OR. SiSiB PC5420, the ethyl ester of orthosilicic acid, is a colorless, low-viscosity liquid with an SiO2 content of 28.5%.

Typical Physical Properties

Chemical Name:	Tetraethoxysilane
Formula:	C4H20O4Si
Molecular Weight:	208.3
Boiling Point:	168°C [760mmHg]
Flash Point:	46°C
Color and Appearance:	Colorless transparent liquid
Density [25°C]:	0.934
Refractive Index [25°C]:	1.3838 [25°C]
Purity:	Min.99.0% by GC

Applications

The tetraalkyl orthosilicates ( also called orthosilicic acid esters) most commonly used as starting materials for sol-gel. Polysilicic acidesters are condensation products obtained by incomplete hydrolysis or orthosilicic acid esters. They are also be used as starting materials for the sol-gel process.
· Be hydrolyzed to form silicon dioxide (silica).
· Crosslinkers in silicone rubber systems
· Drying agents in sealing compositions
· Inorganic binder for refractory fillers and pigments
· Coating material for pigments, fibers and other surfaces
· Chemical intermediate

Packings

Net weight 210 L steel drum or 1000 L IBC container.

Tetraethoxysilane (TEOS)

Intervista a Teo Mammucari a cura di Annarosa Pacini.

A port of TEO, a Thomson TO8 emulator, for MacOS.

Centro Rural Agrupado. Novas e calendario escolar, recursos e aula virtual.

TEOS

Intervista a Teo Mammucari a cura di Annarosa Pacini.

A port of TEO, a Thomson TO8 emulator, for MacOS.

Centro Rural Agrupado. Novas e calendario escolar, recursos e aula virtual.

Drying Agent

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Orthosilicic Acid Ester

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