Octakis(trimethylsiloxy)silsesquioxane

Base Information

• Chemical Name: Octakis(trimethylsiloxy)silsesquioxane
• CAS No.: 51777-38-9
• Molecular Formula: C₂₄H₇₂O₂₀Si₁₆
• Molecular Weight: 1130.19
• Mol file: 51777-38-9.mol

Synonyms:Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane,octakis[(trimethylsilyl)oxy]- (9CI)

Chemical Property of Octakis(trimethylsiloxy)silsesquioxane

Chemical Property:

• Boiling Point: 542.3±33.0 °C(Predicted)
• PSA: 92.30000
• Density: 1.11
• LogP: 9.13840
• Solubility.: Sparingly Soluble (0.61 g/L) (25°C), Calc.

Purity/Quality:

99% ^*data from raw suppliers

Octakis(trimethylsiloxy)silsesquioxane ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Uses: Used as flavor and fragrance intermediates. It is an important raw material used intermediate in pharmaceuticals, organic synthesis, dye stuffs and agrochemicals.

Technology Process of Octakis(trimethylsiloxy)silsesquioxane

There total 3 articles about Octakis(trimethylsiloxy)silsesquioxane 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: 30.7%

chloro-trimethyl-silane (75-77-4) + octakis(tetramethylammonium)silsesquioxane → 1-hydroxy-3,5,7,9,11,13,15-heptakis(trimethylsiloxy)pentacyclo[9.5.1.1(3,9).1(5,15).1(7,13)]octasiloxane + oktakis-(trimethylsiloxy)octasilsesquioxane (51777-38-9)

Guidance literature:

In tetrahydrofuran; for 1.08333h;

DOI:10.1002/hc.21373

Reference yield:

chloro-trimethyl-silane (75-77-4) → oktakis-(trimethylsiloxy)octasilsesquioxane (51777-38-9)

Guidance literature:

With O₂₀Si₈^(8-);

DOI:10.1002/chem.201102205

Reference yield:

Hexamethyldisiloxane (107-46-0) + octakis(tetramethylammonium)silsesquioxane → oktakis-(trimethylsiloxy)octasilsesquioxane (51777-38-9)

Guidance literature:

With hydrogenchloride; In water; isopropyl alcohol;

DOI:10.1002/(sici)1099-0682(199907)1999:7<1087::aid-ejic1087>3.0.co;2-3

upstream raw materials:

Hexamethyldisiloxane

chloro-trimethyl-silane

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