CAS · 681-84-5
Product Overview
Tetramethyl orthosilicate is a high-purity silicon-compounds supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product Specifications
| Appearance: | Colorless and transparent liquid |
|---|---|
| Assay: | 99% min |
| Density (20℃) (g/cm³): | 1.015 - 1.035 |
| Refractive index (nD, 25℃): | 1.3650 - 1.3750 |
| Cl: | 10 ppm max |
Applications
1. Precursor for Silica and Silica-Based Materials
TMOS is a primary precursor in the synthesis of silica (SiO2) via sol-gel processes.
Used to produce:
Silica aerogels
Silica coatings
Silica nanoparticles
Enables control over porosity, surface area, and particle size in silica materials.
2. Surface Treatment and Coatings
Employed in surface modification to create hydrophobic or hydrophilic coatings on various substrates.
Used in adhesives, sealants, and protective coatings to improve chemical resistance and durability.
3. Ceramic and Glass Manufacturing
Serves as a precursor in the fabrication of ceramic materials and optical glasses.
Enhances material homogeneity and purity.
4. Catalyst Supports
Used to prepare high-surface-area silica supports for catalysts in petrochemical and chemical industries.
5. Electronics and Semiconductor Industry
Utilized in thin film deposition and as an insulator in microelectronics.
Benefits
High Purity Silica Production: Allows formation of highly pure and uniform silica materials.
Versatile Reactivity: Hydrolyzes and condenses under mild conditions, facilitating easy processing.
Control Over Material Properties: Enables precise tuning of porosity, particle size, and surface chemistry.
Improved Material Performance: Enhances mechanical strength, thermal stability, and chemical resistance of coatings and composites.
Widely Used and Established: TMOS is a standard chemical for sol-gel and materials synthesis.
Conclusion
Tetramethyl orthosilicate (CAS 681-84-5) is a vital chemical precursor extensively used in the synthesis of silica materials, coatings, ceramics, and catalysts. Its unique hydrolytic reactivity makes it indispensable for sol-gel processing and the production of high-purity silica with controlled properties. While offering significant versatility and benefits in materials science and electronics, it requires careful handling due to its toxicity and volatility.
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