Chemical Name: Tetraethoxysilane
Synonyms: TEOS; Tetraethyl orthosilicate; Tetraethyl silicate; Ethyl silicate
CAS No.: 78-10-4
Molecular Formula: C8H20O4Si
Molecular weight: 208.33
Appearance: Transparent liquid
Assay: ≥98%
Tetraethoxysilane (TEOS CAS 78-10-4) Quick Details
Chemical Name: Tetraethoxysilane/ TEOS
CAS No.:78-10-4
Molecular Formula: C8H20O4Si
Molecular weight: 208.33
Chemical Structure:
Appearance: Transparent liquid
Assay: ≥98%
Typical Properties
| Item | Standard |
| Appearance | Colorless transparent liquid |
| Assay% | ≥98 |
| Specific Gravity at 25°C, g/cm3 | 0.929-0.939 |
| Refractive Index, ND20 | 1.3786-1.3868 |
| Free Chlorine, ppm | ≤10 |
| SiO2, % | 28-30 |
| Water dispersion | Qualified |
Tetraethoxysilane (TEOS CAS 78-10-4)Usage
The product is mainly used in the manufacture of chemical-resist and heat-resist coatings, organosilicon solvents and adhesives of precision casting.
When be completely hydrolyzed, it will generate tiny silicon oxide powder which can be used in making fluorescent powder.
Applied to natural stones or other construction materials, it forms a silica-gel like binder (SiO2) that increases the substrate strength.
Polymerization of silicone resins for use in paints and other surface modification applications. And it is the intermediate for sol-gel process.
Further more, it can improve the performance of other resins and also it is the material for making silicon macromolecular compounds.
1.This product is mainly used as an insulating material in the electronics industry, an optical glass treatment agent and coagulant, and the synthesis of silicone resins.
2.It is used to produce heat-resistant and chemical-resistant coatings, silicone solvents, and adhesives for precision casting, etc. It is also a widely used organic synthesis intermediate.
3. Used as a key skeleton additive for inorganic weather-resistant zinc-rich coatings to improve the corrosion resistance and mechanical strength of coatings;
4. Used in the synthesis and production of silicone resins and cross-linking agents for silicone sealants;
5. Widely used as a silicon source in the preparation of molecular sieves, aerogels, solid gels, and chip grinding fluids;
6. Ultra-high purity T28 can be used in the CVD treatment process during chip processing;
7. Used as a precursor in the ceramic processing process to increase adhesion and improve surface finish.
Packaging and Shipping
Packing: 25KG, 200KG drums, IBC and ISO Tank
Tetraethoxysilane (TEOS CAS 78-10-4)Storage
Be sealed and stored in cool and well ventilated place. Away from fire and water.
