Silicic Acid Esters | Silicates | Polysilicates | Orthosilicates | Silane Passivating Agents

SiSiB® PC5433

Synonym: Tetraisoproyl Silicate; Tetraisopropylorthosilate;
Silicon tetra-isopropoxide; Tetrakis(isopropoxy)silane

Chemical Structure


SiSiB® PC5433, the iso-propyl ester of orthosilicic acid, is a colorless clear liquid.

Typical Physical Properties

Chemical Name: Tetraisopropoxysilane
CAS No.: 1992-48-9
EINECS No.: 217-875-1
Empirical Formula: C12H28O4Si
Molecular Weight: 264.43
Boiling Point: 228°C [760mmHg]
Flash Point: 76°C
Color and Appearance: Colorless transparent liquid
Density [25°C]: 0.92
Refractive Index [25°C]: 1.419 [25°C]
Purity: Min.99.0% by GC


SiSiB® PC5433 may be used as an inorganic binder for refactory fillers and pigments, like precision investment castings.

SiSiB® PC5433 may be used as a second backup casting coating. It cures faster than silica system.

SiSiB® PC5433 may be hydrolyzed to form silicon dioxide (silica).

SiSiB® PC5433 may be used as a binder in zinc-rich (corrosion resistant) coating.

SiSiB® PC5433 may be used as a starting material for sol-gel process.

SiSiB® PC5433 may be used as a crosslinking agent for silicone sealant.

SiSiB® PC5433 may be used as a drying agent in sealing compositions.

SiSiB® PC5433 may be used as a chemical intermediate.


Net weight 180Kg steel drum or 900Kg IBC container, for more details, please visit Packing Centre.

Technical Library

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