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Tetraethoxysilan, 99.9 %, Thermo Scientific Chemicals

Artikelnummer. 11480251
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Product Code. 11480251 Supplier Thermo Scientific Alfa Aesar Supplier No. 040251.A3
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Verfügbar ab: 21-12-2026
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Description

CAS: 78-10-4 | C8H20O4Si | 208.329 g/mol

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.

TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 78-10-4
Summenformel C8H20O4Si
Molekulargewicht (g/mol) 208.329
MDL-Nummer MFCD00009062
InChI-Schlüssel BOTDANWDWHJENH-UHFFFAOYSA-N
Synonym tetraethyl orthosilicate, tetraethoxysilane, teos, ethyl silicate, silicon ethoxide, silicon tetraethoxide, silane, tetraethoxy, dynasil a, tetraethoxysilicon, ethyl orthosilicate
PubChem CID 6517
IUPAC-Name Tetraethylsilikat
SMILES CCO[Si](OCC)(OCC)OCC

Specifications

Siedepunkt 168°C
Chemischer Name oder Material Tetraethoxysilane
Schmelzpunkt -85°C
Farbe Farblos
Physikalische Form Flüssigkeit
Menge 2 kg
Flammpunkt 46°C (116°F)
Geruch Pleasant
Brechungsindex 1.382
Empfindlichkeit Moisture sensitive
Dichte 0.934
Strukturformel (C2H5O)4Si
UN-Nummer UN1292
Beilstein 1422225
Merck Index 14,3851
Löslichkeitsinformationen Soluble in ethanol and 2-propanol.
Formelmasse 208.33
Reinheit (%) 99.9%
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