Tetraethyl Orthosilicate
Tetraethyl orthosilicate is a colorless liquid organosilicon . It is the ethyl ester of orthosilicic acid, slightly soluble in water but miscible with common organic solvents, and hydrolyzes slowly in moisture to form silica and ethanol
Technical Data
| Chemical Structure |  |
| Molecular Formula | C8H20O4Si |
| Molecular Weight | 208.33 |
| CAS No. | 78-10-4 |
| Appearance | Colorless transparent liquid |
| Purity | ≥98.5% |
| Density at 25℃ | 0.94g/ml |
| Boiling Point at 760mmHg | 168℃ |
| Flash Point | 53℃ |
| Refractive Index 20℃ | 1.382 |
Application
- It can be applied neat, diluted or as part of a formulated product.
- 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 intermediate for sol-gel process.
- For the manufacture of sealant materials RTV-2, It can be used as a cross-linking agent.
- On glass and plastic lens materials, it provides a scratch-resistant, hard-coat to the finish.