Tetraethyl orthosilicate

Base Information

• Chemical Name: Tetraethyl orthosilicate
• CAS No.: 78-10-4
• Deprecated CAS: 827300-06-1,1239977-99-1,1421840-08-5
• Molecular Formula: C8H20O4Si
• Molecular Weight: 208.33
• Hs Code.: 2920 90 70
• European Community (EC) Number: 201-083-8
• ICSC Number: 0333
• NSC Number: 4790
• UN Number: 1292
• UNII: 42064KRE49
• DSSTox Substance ID: DTXSID6026450
• Nikkaji Number: J5.506I
• Wikipedia: Tetraethyl_orthosilicate
• Wikidata: Q421458
• ChEMBL ID: CHEMBL3187981
• Mol file: 78-10-4.mol

Synonyms:tetraethoxysilane;tetraethyl orthosilicate;tetraethylorthosilicate

Chemical Property of Tetraethyl orthosilicate

Chemical Property:

• Appearance/Colour: clear colorless liquid with a faint odor
• Vapor Pressure: <1 mm Hg ( 20 °C)
• Melting Point: -77 °C
• Refractive Index: n20/D 1.382(lit.)
• Boiling Point: 165.499 °C at 760 mmHg
• Flash Point: 46.667 °C
• PSA: 36.92000
• Density: 0.939 g/cm³
• LogP: 1.56800
• Storage Temp.: Flammables area
• Sensitive.: Moisture Sensitive
• Solubility.: Soluble in ethanol and 2-propanol.
• Water Solubility.: Hydrolysis
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 4
• Rotatable Bond Count: 8
• Exact Mass: 208.11308565
• Heavy Atom Count: 13
• Complexity: 91.2
• Transport DOT Label: Flammable Liquid

Purity/Quality:

99% ^*data from raw suppliers

Tetraethyl orthosilicate ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xn
• Hazard Codes: Xn
• Statements: 10-20-36/37-36/37/38
• Safety Statements: 16-36/37/39-26-24/25

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Metalloid Compounds (Silicon)
• Canonical SMILES: CCO[Si](OCC)(OCC)OCC
• Inhalation Risk: A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20 °C.
• Effects of Short Term Exposure: The substance is irritating to the eyes, skin and respiratory tract. Exposure could cause lowering of consciousness.
• Effects of Long Term Exposure: The substance defats the skin, which may cause dryness or cracking. The substance may have effects on the kidneys.
• Uses: 1. Tetraethyl orthosilicate is Used as insulating materials in electronic industry, also used for optical glass processing and used as coagulants. 2. For precision casting, as a sand binder. Metal surface treated by ethyl silicate vapor can be anticorrosion and waterproof. Ethyl silicate can be used to bleed on the metal surface of the silicon, processing optical glass can improve its light transmittance. Fine silica powder produced by complete hydrolysis can be used to manufacture the phosphor. Ethyl silicate is raw material for silicone oil. Ethyl silicate can also be used to manufacture heat-resistant, chemical-resistant coatings. In Japan, 90% of ethyl silicate is used as an anti-corrosion coating (zinc-rich paint) base material. 3. Tetraethyl orthosilicate is Mainly used in chemical-resistant coatings and heat-resistant coatings, used as silicone solvent and precision-made binder. Fine silica powder produced after complete hydrolysis, used for the manufacture of phosphor, also used as a chemical reagent. 4. Tetraethoxysilane is mainly used in optical glass, chemical resistant coatings and heat-resistant coatings and adhesives, modification for anti-corrosion coating, used as crosslinking agent, a binder, a dehydrating agent, used for manufacturing catalyst skeleton, high purity ultrafine silica. 5. Used as Insulating materials in electronic industry, coatings, optical glass treatment agents, coagulants, used for organic synthesis, used as solvents for the preparation of organosilicon. Commonly used as a precursor to prepare xerogel1,2 Tetraethyl Orthosilicate is used in the preparation of antidreflective coatings on silicate glass via silicon dioxide. Crosslinking reagent. In weatherproofing and hardening stone, arresting decay and disintegration; manufacture of weatherproof and acidproof mortars and cements. In the "lost wax" process for casting of high-melting alloys.
• Production method: It is produced by esterification of silicon tetrachloride with ethanol at normal temperature and pressure.

Technology Process of Tetraethyl orthosilicate

There total 144 articles about Tetraethyl orthosilicate which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 68.0%

1-hexene (592-41-6,25067-06-5) + Triethoxysilane (998-30-1) → tetraethoxy orthosilicate (78-10-4) + hexaethoxydisiloxane (2157-42-8) + trans-2-hexene (4050-45-7) + hexyltriethoxysilane (18166-37-5) + β-hexyltriethoxysilane (18166-36-4)

Guidance literature:

With tris(triphenylphosphine)ruthenium(II) chloride; for 5h; Product distribution; Mechanism; Heating; other catalysts; the atmosphere of air or argon;

DOI:10.1016/S0022-328X(00)99230-1

Reference yield: 44.0%

tetrachlorosilane (10026-04-7,53609-55-5) + ethanol (64-17-5) → tetraethoxy orthosilicate (78-10-4) + chlorotriethoxysilane (4667-99-6)

Guidance literature:

at 0 - 20 ℃;

DOI:10.1002/chem.201805942

Reference yield: 21.0%

ethanol (64-17-5) + tris(silatranyloxyethyl)amine (29167-65-5) → tetraethoxy orthosilicate (78-10-4) + hexaethoxydisiloxane (2157-42-8) + 1,1,1,3,3,5,5,5-octaethoxy-trisiloxane (4521-94-2)

Guidance literature:

With hydrogenchloride; for 2h;

DOI:10.1071/C98060

upstream raw materials:

ethyl nitrite

hexaethoxydisiloxane

aluminum ethoxide

O,O'-diethyl-thiophosphoric tri-O-ethyl-silicic anhydride

Downstream raw materials:

tetrapropoxysilane

ethyltriethoxy silane

silicic acid tetra-4-cresylester

(acetoxy)tri(ethoxy)silane

Refernces

• 1、 Parshina, Lidiya N.,Oparina, Lyudmila A.,Khil'ko, Marina Ya.,Trofimov, Boris A.. "Catalysis of triethoxysilane disproportionation with oligoethylene glycol ethers". . p. 246 - 249. Retrieved 2003.
• 2、 Temnikov,Anisimov,Chistovalov,Zhemchugov,Kholodkov,Zimovets,Vysochinskaya, Yu. S.,Muzafarova. "Mechanochemical method of producing triethoxysilane". . p. 270 - 274. Retrieved 2019.
• 3、 Putro, Wahyu S.,Ikeda, Akira,Shigeyasu, Shinji,Hamura, Satoshi,Matsumoto, Seiji,Lee, Vladimir Ya.,Choi, Jun-Chul,Fukaya, Norihisa. "Sustainable Catalytic Synthesis of Diethyl Carbonate". . p. 842 - 846. Retrieved 2020/12/07.
• 4、 -. "METHOD FOR PRODUCING TETRAALKOXYSILANE". Paragraph 0055; 0056-0061; 0062; 0063-0066; 0069-0073. . Retrieved 2020/12/01.