Hexadecamethylheptasiloxane

Base Information

• Chemical Name: Hexadecamethylheptasiloxane
• CAS No.: 541-01-5
• Molecular Formula: C16H48O6Si7
• Molecular Weight: 533.152
• Hs Code.: 2934999090
• European Community (EC) Number: 208-763-3
• DSSTox Substance ID: DTXSID8060242
• Nikkaji Number: J120.963I
• Wikidata: Q81989069
• Mol file: 541-01-5.mol

Synonyms:541-01-5;HEXADECAMETHYLHEPTASILOXANE;Hexadecamethyl heptasiloxane;Heptasiloxane, hexadecamethyl-;1,1,1,3,3,5,5,7,7,9,9,11,11,13,13,13-Hexadecamethylheptasiloxane;bis[[[dimethyl(trimethylsilyloxy)silyl]oxy-dimethylsilyl]oxy]-dimethylsilane;C16H48O6Si7;EINECS 208-763-3;Heptasiloxane, 1,1,1,3,3,5,5,7,7,9,9,11,11,13,13,13-hexadecamethyl-;Hepta(dimethylsiloxane);SCHEMBL247054;DTXSID8060242;HSDB 8420;CHEBI:132295;C16-H48-O6-Si7;MFCD05663924;AKOS030227995;DS-19609;CS-0186278;I10427;A870545;Hexadecamethyl heptasiloxane** CUSTOM SYNTHESIS PLEASE ASK **;1,1,1,3,3,5,5,7,7,9,9,11,11,13,13,13-Hexadecamethylheptasiloxane #

Chemical Property of Hexadecamethylheptasiloxane

Chemical Property:

• Vapor Pressure: 0.0116mmHg at 25°C
• Melting Point: -78°C
• Refractive Index: 1.3965
• Boiling Point: 270°Cat760mmHg
• Flash Point: 168.9°C
• PSA: 55.38000
• Density: 0.917g/cm³
• LogP: 6.26480
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 12
• Exact Mass: 532.18357499
• Heavy Atom Count: 29
• Complexity: 493

Purity/Quality:

Hexadecamethylheptasiloxane ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Metals -> Metalloid Compounds (Silicon)
• Canonical SMILES: C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C

Technology Process of Hexadecamethylheptasiloxane

There total 10 articles about Hexadecamethylheptasiloxane 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: 95.0%

1,1,1,3,3-pentamethyl-3-acetoxydisiloxane (70693-47-9) + undecamethylpentasiloxane-1-ol → hexadecamethylheptasiloxane (541-01-5)

Guidance literature:

With triethylamine; In dichloromethane; at 25 ℃;

DOI:10.1016/0022-328X(89)80080-4

Reference yield: 61.0%

octamethylcyclotetrasiloxane (556-67-2) → tetramethylsilane (75-76-3) + trimethylsilyl iodide (16029-98-4) + Hexamethyldisiloxane (107-46-0) + hexadecamethylheptasiloxane (541-01-5)

Guidance literature:

With gallium(III) iodide; at 140 - 170 ℃; for 5h; Yield given; Title compound not separated from byproducts;

Reference yield: 35.5%

1,1,1,3,3-pentamethyl-3-acetoxydisiloxane (70693-47-9) + undecamethylpentasiloxane-1-ol → docosamethyl-decasiloxane (556-70-7) + hexadecamethylheptasiloxane (541-01-5)

Guidance literature:

With trifluorormethanesulfonic acid; In dichloromethane; at 25 ℃;

DOI:10.1016/0022-328X(89)80080-4

upstream raw materials:

1,1,1,3,3-pentamethyl-3-acetoxydisiloxane

octamethylcyclotetrasiloxane

Hexamethyldisiloxane

ethyl trimethylsilyl ether

Refernces

• 1、 Neumeyer, Felix,Auner, Norbert. "One-Step Synthesis of Siloxanes from the Direct Process Disilane Residue". supporting information. p. 17165 - 17168. Retrieved 2016/11/23.
• 2、 -. "COSMETIC COMPOSITION BASED ON A SUPRAMOLECULAR POLYMER AND A SILICONE COMPOUND". . . Retrieved 2014/06/23.