1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

Base Information

• Chemical Name: 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane
• CAS No.: 1000-05-1
• Molecular Formula: C8H26O3Si4
• Molecular Weight: 282.635
• Hs Code.: 2934999090
• European Community (EC) Number: 213-669-0
• UNII: YB15PH50RH
• DSSTox Substance ID: DTXSID8044759
• ChEMBL ID: CHEMBL3988891
• Mol file: 1000-05-1.mol

Synonyms:1,1,3,3,5,5,7,7-Octamethyltetrasiloxane;1000-05-1;Octamethyltetrasiloxane;Tetrasiloxane, 1,1,3,3,5,5,7,7-octamethyl-;EINECS 213-669-0;UNII-YB15PH50RH;YB15PH50RH;DTXSID8044759;[[(dimethyl-$l^{3};1,1,3,3,5,5,7,7-octamethyl tetrasiloxane;C8H26O2Si4;SCHEMBL187714;CHEMBL3988891;DTXCID6024759;BAA00005;Tox21_300728;AKOS024462460;NCGC00248153-01;NCGC00254634-01;BS-53214;CAS-1000-05-1;LS-149000;1,1,3,3,5,5,7,7-Ctamethyltetrasiloxane;FT-0633222;O0502;1,1,3,3,5,5,7,7-Ctamethyl-Tetrasiloxane;Tetrasiloxane,1,1,3,3,5,5,7,7-octamethyl-;1,1,3,3,5,5,7,7-Ctamethyltetrasiloxane,80%Inctamethylcyclotetrasiloxane;[[(dimethyl-3-silanyl)oxy-dimethylsilyl]oxy-dimethylsilyl]oxy-dimethylsilicon;1,1,3,3,5,5,7,7-Ctamethyltetrasiloxane, 80% In Ctamethylcyclotetrasiloxane

Chemical Property of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

Chemical Property:

• Melting Point: <0°C
• Refractive Index: 1.3875
• Boiling Point: 205.1 °C at 760 mmHg
• Flash Point: 77.8 °C
• PSA: 27.69000
• Density: 0.863
• LogP: 2.40660
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 6
• Exact Mass: 280.08025076
• Heavy Atom Count: 15
• Complexity: 174

Purity/Quality:

98% ^*data from raw suppliers

1,1,3,3,5,5,7,7-Octamethyltetrasiloxane >92.0%(GC) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36

MSDS Files:

SDS file from LookChem

Useful:

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

Technology Process of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

There total 14 articles about 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane 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: 5.0%

H2SiEt2 (542-91-6) + 1,1,3,3-Tetramethyldisiloxane (3277-26-7) → 1,1,3,3,5,5,7,7-octamethyltetrasiloxane (1000-05-1) + 1,1,3,3,5,5,7,7,9,9-decamethylpentasiloxane (995-83-5) + 1,1,3,3,5,5,7,7,9,9,11,11-dodecamethylhexasiloxane (995-82-4) + C10H28O2Si3

Guidance literature:

With nickel; at 20 ℃; Further byproducts given;

DOI:10.1023/B:DOCH.0000010333.98677.c6

Reference yield:

dimethylmonochlorosilane (1066-35-9) + dimethylsilanediol (1066-42-8,31900-57-9) + 1,1,3,3-tetramethyldisilazane (15933-59-2) → 1,1,3,3,5,5,7,7-octamethyltetrasiloxane (1000-05-1)

Guidance literature:

In toluene;

Reference yield:

tetrahydrofuran (109-99-9,24979-97-3,77392-70-2) + 1,7-dichlorooctamethyltetrasiloxane (2474-02-4) → 1,1,3,3,5,5,7,7-octamethyltetrasiloxane (1000-05-1) + 1,7-Dibutyloxy-octamethyl-tetrasiloxan (18547-28-9)

Guidance literature:

With ^+-; for 2h; Title compound not separated from byproducts; Ambient temperature;

upstream raw materials:

dimethylmonochlorosilane

dimethylsilanediol

1,1,3,3-tetramethyldisilazane

tetrahydrofuran

Downstream raw materials:

1,3,3,5,5-hexamethyltrisiloxane

1,7-bis(3'-(2-cyanatophenyl)propyl)-1,1,3,3,5,5,7,7-octamethyltetrasiloxane

dimethylsilane

Hexamethylcyclotrisiloxane

Refernces

• 1、 Il’ina, M. A.,de Vekki, D. A.. "Hydrosilylation of Allyl Ethers in the Presence of Platinum(II) Immobilized on Polymethylene Sulfide". . p. 68 - 77. Retrieved 2020.
• 2、 Shcherbakov et al.. "". . . Retrieved 1976.
• 3、 De Vekki,Skvortsov. "Effect of catalyst structure on the reaction of α-methylstyrene with 1,1,3,3-tetramethyldisiloxane". body text. p. 762 - 777. Retrieved 2009/09/26.