hexamethyl diorthosilicate

Base Information

• Chemical Name: hexamethyl diorthosilicate
• CAS No.: 4371-91-9
• Molecular Formula: C6H18O7Si2
• Molecular Weight: 258.376
• Hs Code.: 2920909090
• European Community (EC) Number: 224-467-7
• DSSTox Substance ID: DTXSID40963105
• Nikkaji Number: J205.750F
• Wikidata: Q82944914
• Mol file: 4371-91-9.mol

Synonyms:Hexamethyl diorthosilicate;4371-91-9;hexamethoxydisiloxane;trimethyl trimethoxysilyl silicate;EINECS 224-467-7;Disiloxane, hexamethoxy-;hexamethoxy disiloxane;Hexamethoxypropanedisiloxane;C6H18O7Si2;SCHEMBL412622;C6-H18-O7-Si2;DTXSID40963105;MFCD02912820;AKOS024390855;Trimethyl trimethoxysilyl orthosilicate;Trimethyl trimethoxysilyl orthosilicate #;Silicic acid (H6Si2O7), hexamethyl ester;H1716;Disilicic acid (H6-Si2-O7), hexamethyl ester;E78978;A857261

Chemical Property of hexamethyl diorthosilicate

Chemical Property:

• Vapor Pressure: 3.63mmHg at 25°C
• Refractive Index: 1.38
• Boiling Point: 157°C at 760 mmHg
• Flash Point: 40.5°C
• PSA: 64.61000
• Density: 1.06g/cm³
• LogP: -0.24740
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 7
• Rotatable Bond Count: 8
• Exact Mass: 258.05910598
• Heavy Atom Count: 15
• Complexity: 136

Purity/Quality:

99%, ^*data from raw suppliers

Hexamethoxydisiloxane ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: CO[Si](OC)(OC)O[Si](OC)(OC)OC

Technology Process of hexamethyl diorthosilicate

There total 14 articles about hexamethyl diorthosilicate 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: 75.0%

hydroxytrimethoxysilane (18230-57-4) → hexamethoxydisiloxane (4371-91-9)

Guidance literature:

Reference yield: 70.0%

methanol (67-56-1) → tetramethylorthosilicate (681-84-5) + hexamethoxydisiloxane (4371-91-9)

Guidance literature:

With copper(l) chloride; silicon; at 250 ℃; for 3h; under 159611 Torr; Temperature; Pressure; Autoclave;

DOI:10.1007/s11172-017-1726-7

Reference yield: 43.0%

methanol (67-56-1) + Chlor-pentakis(dimethylamino)-disiloxan (133902-86-0) → hexamethoxydisiloxane (4371-91-9)

Guidance literature:

In diethyl ether; for 12h; Heating;

DOI:10.1007/BF00808949

upstream raw materials:

methanol

tetramethylorthosilicate

Chlor-pentakis(dimethylamino)-disiloxan

tetrachlorosilane

Refernces

• 1、 Sakamoto, Shigeru,Shimojima, Atsushi,Miyasaka, Keiichi,Ruan, Juanfang,Terasaki, Osamu,Kuroda, Kazuyuki. "Formation of two- and three-dimensional hybrid mesostructures from branched siloxane molecules". . p. 9634 - 9635. Retrieved 2009.
• 2、 Chibiryaev, Andrey M.,Kozhevnikov, Ivan V.,Martyanov, Oleg N.. "High-temperature reaction of SiO2 with methanol: Nucleophilic assistance of some N-unsubstituted benzazoles". . p. 159 - 167. Retrieved 2013/06/26.
• 3、 Wakabayashi, Ryutaro,Kawahara, Kazufumi,Kuroda, Kazuyuki. "Nonhydrolytic synthesis of branched alkoxysiloxane oligomers Si[OSiH(OR)2]4 (R = Me, Et)". scheme or table. p. 5273 - 5277. Retrieved 2010/10/21.