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

SiSiB® PC5411

Methyl Silicate 51.
Synonym: Methyl Polysilicate 51

Chemical Structure


SiSiB® PC5411, [also called Methyl silicate 51] is a hydrolyzed and oligomerized form of methyl silicate. It is a mixture of monomers, dimers, trimers and cyclic polysiloxanes. SiSiB® PC5411 is a transparent liquid containing 51% silica (SiO2) by mass.

Typical Physical Properties

Chemical Name: Methyl Silicate 51
CAS No.: 12002-26-5
Empirical Formula: C10H30O13Si4
Molecular Weight: 470.68
Silica Content: 51%
Boiling Point: 230°C [760mmHg]
Flash Point: 126°C
Color and Appearance: Colorless transparent liquid
Density [25°C]: 1.18
Refractive Index [25°C]: 1.393 [20°C]
Purity: Min.99.0% by GC


SiSiB® PC5411 can be used as an inorganic binder for refractory fillers and pigments, like precision investment castings.

SiSiB® PC5411 can be used as a second backup casting coating. It cures faster than colloidal silica system.

SiSiB® PC5411 can be hydrolyzed to form silicon dioxide (silica).

SiSiB® PC5411 can be used as a binder in zinc-rich (corrosion resistant) coating.

SiSiB® PC5411 can be used as a starting material for sol-gel process.

SiSiB® PC5411 can be used as a crosslinking agent for silicone sealant.

SiSiB® PC5411 can be used as a drying agent in sealing compositions.

SiSiB® PC5411 can be used as a chemical intermediate.


Net weight 220Kg steel drum or 1000Kg IBC container, for more details, please visit Packing Centre.

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