Tetraethoxysilane, 99.9%, Thermo Scientific Chemicals

Product Code	Brand	Quantity
11343768	Thermo Scientific Alfa Aesar 040251.22	100 g
11333768	Thermo Scientific Alfa Aesar 040251.36	500 g
11480251	Thermo Scientific Alfa Aesar 040251.A3	2 kg

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.

Chemical Identifiers

• CAS: 78-10-4
• Molecular Weight (g/mol): 208.329
• InChI Key: BOTDANWDWHJENH-UHFFFAOYSA-N
• PubChem CID: 6517
• SMILES: CCO[Si](OCC)(OCC)OCC

• Molecular Formula: C8H20O4Si
• MDL Number: MFCD00009062
• Synonym: tetraethyl orthosilicate, tetraethoxysilane, teos, ethyl silicate, silicon ethoxide, silicon tetraethoxide, silane, tetraethoxy, dynasil a, tetraethoxysilicon, ethyl orthosilicate
• IUPAC Name: tetraethyl silicate

Specifications

• Boiling Point: 168°C
• CAS: 78-10-4
• Assay Percent Range: 99.9%
• MDL Number: MFCD00009062
• Flash Point: 46°C (116°F)
• Solubility Information: Soluble in ethanol and 2-propanol.
• SMILES: CCO[Si](OCC)(OCC)OCC
• Molecular Weight (g/mol): 208.329
• Formula Weight: 208.33
• Sensitivity: Moisture sensitive
• Chemical Name or Material: Tetraethoxysilane

• Melting Point: °C to 85°C
• Physical Form: Liquid
• Molecular Formula: C8H20O4Si
• Beilstein: 1422225
• Synonym: tetraethyl orthosilicate, tetraethoxysilane, teos, ethyl silicate, silicon ethoxide, silicon tetraethoxide, silane, tetraethoxy, dynasil a, tetraethoxysilicon, ethyl orthosilicate
• InChI Key: BOTDANWDWHJENH-UHFFFAOYSA-N
• IUPAC Name: tetraethyl silicate
• PubChem CID: 6517
• Refractive Index: 1.382
• Density: 0.934 g/mL

Safety and Handling

P210-P233-P235-P240-P241-P242-P243-P261-P264b-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P312-P370+P378q-P501c

H226-H319-H332-H335

missing translation for 'dotInformation' : Hazard Class: 3; Packaging Group: III

missing translation for 'einecsNumber' : 201-083-8

missing translation for 'rtecsNumber' : VV9450000

missing translation for 'tsca' : Yes

Recommended Storage : Ambient temperatures

Product Identifier

• Tetraethoxysilane

Signal Word

• Warning

Hazard Category

• Acute toxicity Category 4
• Serious eye damage/eye irritation Category 2
• Flammable liquid Category 3
• Specific target organ toxicity Category 3

Hazard Statement

• H226-Flammable liquid and vapour.
• H319-Causes serious eye irritation.
• H332-Harmful if inhaled.
• H335-May cause respiratory irritation.

Precautionary Statement

• 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.

Supplemental information

• MIXTURE LIST-Contains : Tetraethoxysilane

RUO – Research Use Only