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131903 Aldrich

Tetraethyl orthosilicate

reagent grade, 98%

Synonym: Orthosilicic acid tetraethyl ester, Silicon tetraethoxide, TEOS, Tetraethoxysilane, Tetraethoxysilicon(IV), Tetraethyl silicate

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Properties

Related Categories Chemical Synthesis, Materials Science, Micro/NanoElectronics, Organometallic Reagents, Organosilicon,
grade   reagent grade
vapor density   7.2 (vs air)
vapor pressure   <1 mmHg ( 20 °C)
InChI Key   BOTDANWDWHJENH-UHFFFAOYSA-N
assay   98%
form   liquid
refractive index   n20/D 1.382(lit.)
bp   168 °C(lit.)
density   0.933 g/mL at 20 °C(lit.)

Description

Frequently Asked Questions

Frequently Asked Questions are available for this Product.

Application

Commonly used as a precursor to prepare xerogel

Will interact with dodecylamine in the formation of intercalation compounds of H+-magadiite and used in a study of mixed-metal bioactive glasses.

Packaging

1, 2.5, 4 L in glass bottle

25, 250, 500 mL in glass bottle

Price and Availability

Safety & Documentation

Safety Information

Symbol 
Signal word 
Warning
Hazard statements 
RIDADR 
UN1292 - class 3 - PG 3 - Tetraethyl silicate
WGK Germany 
1
RTECS 
VV9450000
Flash Point(F) 
113 °F
Flash Point(C) 
45 °C

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
Is anything else needed to use Product 131903, Tetraethyl Orthosilicate in a hydrolysis reaction?
An acid or alkali catalyst is needed to do a hydrolysis reaction to free the silanol group for use.
What is the solubility of Product 131903, Tetraethyl Orthosilicate?
According to the 13th Edition of the Merck Index, Tetraethyl Orthosilicate is practically insoluble in water and is slowly decomposed by it.  It is miscible with alcohol.
Product 131903, Tetraethyl orthosilicate  is commonly used as a precursor to prepare xerogel.  What is xerogel?
A xerogel is a solid formed from a gel by drying with unhindered shrinkage.  Xerogel usually retains high porosity and large surfaced area, along with very small pore size. 
 How can I purify Product 131903, Tetraethyl Orthosilicate?
Fractionate through an 80cm Podbielniak type column with heated jacket and partial take-off head.  [Purification of Laboratory Chemicals Fourth Ed]
What is the freezing point of Product 131903, Tetraethyl Orthosilicate?
The freezing point is ~85ºC.
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
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Protocols & Articles

Articles

Bio-Inspired “Green” Synthesis of Nanomaterials and their Applications

Dr. Siddharth V. Patwardhan Department of Chemical and Process Engineering University of Strathclyde, 75 Montrose Street Glasgow G1 1XJ, UK Email: Siddharth.Patwardhan@strath.ac.uk
Keywords: Adsorption, Agriculture, Apoptosis, Cancer, Catalysis, Condensations, Cosmetics, Deposition, Environmental, Enzyme activity, Green chemistry, Hydration reaction, Immobilization, Microwave synthesis, Nanomaterials, Pharmaceutical, Precipitation, Reductions, Separation, Sol-gel, Solvents

Nanowire Synthesis: From Top-Down to Bottom-Up

David J. Hill, James F. Cahoon* Department of Chemistry, University of North Carolina at Chapel Hill, USA *Email: jfcahoon@unc.edu
David J. Hill, James F. Cahoon*
Material Matters, 2017, 12.1
Keywords: Absorption, Catalysis, Chemical vapor deposition, Deposition, Electronics, Melting, Microelectronics, Nanomaterials, Redox Reactions, Reductions, Semiconductor

Synthesis of Melting Gels Using Mono-Substituted and Di-Substituted Alkoxysiloxanes

Hybrid organic-inorganic sol-gel materials containing silica were first called “ORMOSILs” in 1984.1 Since then, the number of hybrid organicinorganic combinations has increased rapidly.2 Hybrid mater...
Lisa C. Klein and Andrei Jitianu
Material Matters, Volume 7, Number 2, 8–14
Keywords: Absorption, Adhesion, Calorimetry, Combustion, Condensations, Deposition, Exothermic, Filtration, Materials Science, Melting, Oxidations, Polymerization reactions, Purification, Semiconductor, Sol-gel, Solar cells, Solvents, Spin coating, Substitutions, Thermal analysis

Vistas in Current Magnetic Materials Research

Magnetism and magnetic materials have been of scientific interest for over 1,000 years. More recently, fundamental investigations have focused on exploring the various types of magnetic materials and...
Keywords: Automotive, Ceramics, Detection methods, Electronics, Materials Science, Nanomaterials, Precipitation, Semiconductor

Peer-Reviewed Papers
15

References

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