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Sigma-Aldrich 86578 Tetraethyl orthosilicate ≥99.0% (GC) CAS No.: 78-10-4 250 1 L
Brand
Stock Code
LB.SA.86578-1L
Kısa Bilgi
Synonym(s): Orthosilicic acid tetraethyl ester, Silicon tetraethoxide, TEOS, Tetraethoxysilane, Tetraethoxysilicon(IV), Tetraethyl silicate Linear Formula: Si(OC2H5)4 CAS Number: 78-10-4 Molecular Weight: 208.33 Beilstein: 1422225 EC Number: 201-083-8 MDL number: MFCD00009062 UNSPSC Code: 12352103 PubChem Substance ID: 57653167 NACRES: NA.22
| Sigma-Aldrich 86578 Tetraethyl orthosilicate ≥99.0% (GC) CAS No.: 78-10-4 |
| Synonym(s): Orthosilicic acid tetraethyl ester, Silicon tetraethoxide, TEOS, Tetraethoxysilane, Tetraethoxysilicon(IV), Tetraethyl silicate Linear Formula: Si(OC2H5)4 CAS Number: 78-10-4 Molecular Weight: 208.33 Beilstein: 1422225 EC Number: 201-083-8 MDL number: MFCD00009062 UNSPSC Code: 12352103 PubChem Substance ID: 57653167 NACRES: NA.22 |
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PROPERTIES
vapor density 7.2 (vs air)
vapor pressure <1 mmHg ( 20 °C) Assay ≥99.0% (GC) form liquid technique(s) GC/GC: suitable refractive index n20/D 1.382 (lit.), n20/D 1.383 bp 168 °C (lit.) density 0.933 g/mL at 20 °C (lit.) SMILES string CCO[Si](OCC)(OCC)OCC InChI 1S/C8H20O4Si/c1-5-9-13(10-6-2,11-7-3)12-8-4/h5-8H2,1-4H3 InChI key BOTDANWDWHJENH-UHFFFAOYSA-N DESCRIPTION General description Tetraethyl orthosilicate (TEOS) is an inorganic material that can be used as a silica source for the synthesis of silica-based materials such as silicon dioxide,[1] silicon oxycarbides,[2] silanol,[3] siloxane polymer,[4] and organosilicon thin films[5] for a variety of applications. It can also be used in the synthesis of blended membranes, and the production of aerogel.[6] Other applications include coatings for carpets and other objects.[7] Application Commonly used as a precursor to prepare xerogel Tetraethyl orthosilicate (TEOS) can be used: - As a reagent along with ferric chloride in the synthesis of dihydropyrimidinones.[8] - As a modifier in fabrication of humidity sensing material, poly(2-acrylamido-2-methylpropane sulfonate) (poly-AMPS).[9] - As a medium to synthesize triarylamines and diaryl ethers via copper catalyzed, ligand free-Ullmann reaction.[10] - As a precursor for the preparation of silica xerogel which finds application in pharmaceutical drug carriers.[11] - As a precursor for the synthesis of spherical silica particles by Stober process.[12] Will interact with dodecylamine in the formation of intercalation compounds of H+-magadiite and used in a study of mixed-metal bioactive glasses. |
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