Octaethylcyclotetrasiloxane

Base Information

• Chemical Name: Octaethylcyclotetrasiloxane
• CAS No.: 1451-99-6
• Molecular Formula: C16H40 O4 Si4
• Molecular Weight: 408.833
• DSSTox Substance ID: DTXSID40162878
• Nikkaji Number: J453.201E
• Wikidata: Q83031637
• Mol file: 1451-99-6.mol

Synonyms:Octaethylcyclotetrasiloxane;1451-99-6;Cyclotetrasiloxane, octaethyl-;BRN 1802211;2,2,4,4,6,6,8,8-octaethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane;Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octaethyl-;Ctaethylcyclotetrasiloxane;SCHEMBL657596;C16H40O4Si4;DTXSID40162878;C16-H40-O4-Si4;LS-58852;2,2,4,4,6,6,8,8-Octaethyl-[1,3,5,7,2,4,6,8]tetroxatetasilocane

Chemical Property of Octaethylcyclotetrasiloxane

Chemical Property:

• Vapor Pressure: 0.000331mmHg at 25°C
• Boiling Point: 329.9°Cat760mmHg
• Flash Point: 139.1°C
• Density: 0.92g/cm³
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 4
• Rotatable Bond Count: 8
• Exact Mass: 408.20036589
• Heavy Atom Count: 24
• Complexity: 282

Purity/Quality:

97% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: CC[Si]1(O[Si](O[Si](O[Si](O1)(CC)CC)(CC)CC)(CC)CC)CC

Technology Process of Octaethylcyclotetrasiloxane

There total 12 articles about Octaethylcyclotetrasiloxane 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: 38.0%

diethyldichlorosilane (1719-53-5) → 1,1,3,3,5,5-hexaethylcyclotrisiloxane (2031-79-0) + octaethylcyclotetrasiloxane (1451-99-6)

Guidance literature:

With water; In toluene; at 20 ℃; for 27h;

Reference yield: 26.0%

chloro-trimethyl-silane (75-77-4) + diethyldichlorosilane (1719-53-5) → 1,1,3,3,5,5-hexaethylcyclotrisiloxane (2031-79-0) + 3,3,5,5-tetraethyl-1,1,1,7,7,7-hexamethyltetrasiloxane (17866-60-3) + octaethylcyclotetrasiloxane (1451-99-6) + 3,3,5,5,7,7-hexaethyl-1,1,1,9,9,9-hexamethylpentasiloxane (138142-65-1)

Guidance literature:

With water; In toluene; at 20 ℃; for 27h; Further byproducts given;

Reference yield:

C8H20O2Si → 1,1,3,3,5,5-hexaethylcyclotrisiloxane (2031-79-0) + octaethylcyclotetrasiloxane (1451-99-6) + tert-butyl alcohol (75-65-0)

Guidance literature:

In nonane; at 160 ℃; Rate constant; Kinetics; Thermodynamic data; ΔE(excit.), ΔS(excit.);

DOI:10.1016/S0022-328X(00)85524-2

upstream raw materials:

diethyl-chloro-isopropoxy-silane

diethyldichlorosilane

chloro-trimethyl-silane

decaethylcyclopentasilane

Downstream raw materials:

1,3-Dichloro-1,1,3,3-tetraethyldisiloxane

Dodecaaethyl-pentasiloxan

Decaaethyl-tetrasiloxan