Ethyl Polysilcate 40.
Synonym: Ethyl Silicate 40
Countertype of Evonik DYNASIL 40 Wacker SILICATE TES 40, Momentive Silquest TEOS-40
Chemical Structure
Introduction
SiSiB® PC5424 is a hydrolyzed and oligomerized form of ethyl silicate. It is a mixture of monomers, dimers, trimers and cyclic polysiloxanes. SiSiB® PC5424 is a transparent liquid containing 40% silica (SiO2) by mass, but in practice, in addition to chain condensates, it also contains branch-shaped and ring-shaped condensates.
Typical Physical Properties
| Product: | Ethyl Silicate 40 |
| CAS No.: | 11099-06-2 or 68412-37-3 |
| EINECS No.: | 234-324-0 or 270-184-7 |
| Empirical Formula: | C24H60O16Si5 |
| Molecular Weight: | app.750 |
| Silica Content: | 40.0-42.0% |
| Boiling Point: | 160°C [760mmHg] |
| Flash Point: | 62°C |
| Color and Appearance: | Colorless transparent liquid |
| Density [25°C]: | 1.05-1.07 |
| Refractive Index [25°C]: | 1.397 |
| Active Content: | Min.99.0% |
| Viscosity (20°C): | 5 cps |
| Acidity as HCl wt/wt: | 0.001% max. |
Applications
SiSiB® PC5424 is used to deposit silicic acid formed as a result of complete hydrolysis. The resulting silicic acid bonds well to many inorganic substrates, such as ceramic, fillers, glass, metal, pigments and synthetic fibers. The deposition of a thin SiO2 layer improves the chemical and the thermal stability and mechanical properties.
SiSiB® PC5424 may be used as a binder in zinc-rich (corrosion resistant) coating.
SiSiB® PC5424 may be used as a starting material for sol-gel process.
SiSiB® PC5424 may be used as a crosslinker component in cold curing silicone rubber systems.
SiSiB® PC5424 may be used as a hardening component in dentistry for impression materials and as binder for embedding material.
SiSiB® PC5424 may be used as a binder in precision foundry indust.
Packings
Net weight 200Kg steel drum or 1000Kg IBC container, for more details, please visit Packing Centre.