Ethyl Silicate TEOS Crosile® Si50

Tetraethyl Orthosilicate Crosile® Si50 is a colorless or pale-yellow transparent liquid at room temperature, with a taste similar to ether.

Item NO.:
Crosile® Si50
Chemical Name:
Tetraethyl Orthosilicate (Ethyl Silicate 50)
Chemical Formula:
C8H20O4Si
CAS No.:
78-10-4 / 1109-96-2 / 11099-06-2
Properties:
Ethyl Silicate Crosile®Si50 is a colorless or pale-yellow transparent liquid at room temperature, with a taste similar to ether.

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Ethyl Silicate TEOS Crosile® Si50

Chemical Properties

Crosile® Si50 is a high-silica ethyl polysilicate with a silica (SiO₂) content of approximately 50%. It is a clear to slightly yellow liquid with good solubility in organic solvents such as ethanol and acetone.

Upon hydrolysis and condensation, Crosile® Si50 forms a durable silica network with excellent heat resistance, chemical resistance, and binding properties. It is widely used as an inorganic binder and silica precursor in coatings, precision casting, ceramic materials, and specialty applications.

Specifications

Test Item	Target Values(Spec, Limits)
Appearance	Colorless to slightly yellowish transparent liquid
Density (20℃, g/cm3)	1.08-1.25
Viscosity (25℃, mpa.s)	50-250
Silica (SiO2) content, %	50-52
Acidity (as HCI)	≤0.1%