Tetraethoxysilane, 99+%

Description

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

As a binding agent and as a polymerization catalystTetraethoxysilane is the main precursor material for the synthesis of zeolites and silicon dioxide, which is used in semiconductor industry. It is widely used as a cross linking agent 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.

Specifications

Chemical Identifiers

• CAS: 78-10-4
• Molecular Formula: C8H20O4Si
• Molecular Weight (g/mol): 208.329
• MDL Number: MFCD00009062
• InChI Key: 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: tetraethyl silicate
• SMILES: CCO[Si](OCC)(OCC)OCC

• Melting Point: 85°C
• Density: 0.934 g/mL
• Boiling Point: 168°C
• Flash Point: 46°C (116°F)
• Assay Percent Range: >99%
• Refractive Index: 1.382
• Quantity: 500 g
• Beilstein: 1422225
• Sensitivity: Moisture sensitive
• Solubility Information: Soluble in ethanol and 2-propanol.
• Formula Weight: 208.33
• Physical Form: Liquid
• Chemical Name or Material: Tetraethoxysilane

Safety and Handling

Hazard Category	H226-H319-H332-H335
Precautionary Statement	P210-P233-P235-P240-P241-P242-P243-P261-P264b-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P312-P370+P378q-P501c
DOTInformation	Hazard Class: 3; Packaging Group: III
EINECSNumber	201-083-8
RTECSNumber	VV9450000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only