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Tetraethoxysilane, 98%, Thermo Scientific Chemicals
Description
Tetraethoxysilane is the main precursor material for the synthesis of zeolites and silicon dioxide, which is used in semiconductor industry. It is widely used as cross linking agents in silicon polymers and in aerogel preparations.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
Tetraethoxysilane is the main precursor material for the synthesis of zeolites and silicon dioxide, which is used in semiconductor industry. It is widely used as cross linking agents in silicon polymers and in aerogel preparations.
Solubility
Soluble in ethanol and 2-propanol.
Notes
Degrades in water. Keep container tightly closed in a dry and well-ventilated place.

Specifications
Specifications
Melting Point | -85°C |
Density | 0.934 |
Boiling Point | 168°C |
Flash Point | 46°C (116°F) |
Assay Percent Range | 98% |
Odor | Pleasant |
Linear Formula | (C2H5O)4Si |
Refractive Index | 1.383 |
Quantity | 100 mL |
UN Number | UN1292 |
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Certificates
Certificates
A lot number is required to show results for certificates. To find your lot number on previous orders use our order status area.
Lot Number | Certificate Type | Date | Catalog Number |
---|---|---|---|
10252403 | Certificate of Analysis | 12/09/2024 | A14965.0F,A14965.AP,A14965.AE |
10219894 | Certificate of Analysis | 12/04/2024 | A14965.0F,A14965.AP,A14965.AE |
10249824 | Certificate of Analysis | 05/03/2024 | A14965.0F,A14965.AP,A14965.AE |
10248400 | Certificate of Analysis | 23/10/2023 | A14965.0F,A14965.AP,A14965.AE |
10230270 | Certificate of Analysis | 25/07/2023 | A14965.0F,A14965.AP,A14965.AE |
Safety and Handling


- Tetraethoxysilane
- Warning
- Acute toxicity Category 4
- Serious eye damage/eye irritation Category 2
- Flammable liquid Category 3
- Specific target organ toxicity Category 3
- H226-Flammable liquid and vapour.
- H319-Causes serious eye irritation.
- H332-Harmful if inhaled.
- H335-May cause respiratory irritation.
- P210-Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
- P261-Avoid breathing dust/fume/gas/mist/vapours/spray.
- P280-Wear protective gloves/protective clothing/eye protection/face protection.
- P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.
- P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
- MIXTURE LIST-Contains : Ethyl silicate
RUO – Research Use Only
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