Cyclopentasiloxane, 2,4,6,8,10-pentamethyl-

Base Information

• Chemical Name: Cyclopentasiloxane, 2,4,6,8,10-pentamethyl-
• CAS No.: 6166-86-5
• Molecular Formula: C5H20O5Si5
• Molecular Weight: 300.638
• Hs Code.: 2901100000
• European Community (EC) Number: 228-204-7
• DSSTox Substance ID: DTXSID80871154
• Mol file: 6166-86-5.mol

Synonyms:6166-86-5;Cyclopentasiloxane, 2,4,6,8,10-pentamethyl-;PENTAMETHYLCYCLOPENTASILOXANE;2,4,6,8,10-Pentamethylcyclopentasiloxane;EINECS 228-204-7;EC 228-204-7;1,3,5,7,9-Pentamethylcyclopentasiloxane, 90%;1,3,5,7,9-pentamethylcyclopentasiloxane;C5H20O5Si5;SCHEMBL190229;C5-H20-O5-Si5;DTXSID80871154;MFCD00053531;AKOS015912682;FS-5249;FT-0606493;2,4,6,8,10-Pentamethylcyclopentasiloxane, 96%

Chemical Property of Cyclopentasiloxane, 2,4,6,8,10-pentamethyl-

Chemical Property:

• Vapor Pressure: 1.935mmHg at 25°C
• Melting Point: -108°C
• Refractive Index: n20/D 1.392(lit.)
• Boiling Point: 169 °C at 760 mmHg
• Flash Point: 52.9 °C
• PSA: 46.15000
• Density: 0.992 g/mL at 25 °C(lit.)
• LogP: -0.66550
• Storage Temp.: 2-8°C
• Water Solubility.: 110-1000000000μg/L at 20℃
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 5
• Rotatable Bond Count: 0
• Exact Mass: 294.97658125
• Heavy Atom Count: 15
• Complexity: 130

Purity/Quality:

99.9% ^*data from raw suppliers

2,4,6,8,10-Pentamethylcyclopentasiloxane ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 10-36/37/38
• Safety Statements: 16-26-36

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

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

Technology Process of Cyclopentasiloxane, 2,4,6,8,10-pentamethyl-

There total 15 articles about Cyclopentasiloxane, 2,4,6,8,10-pentamethyl- 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: 51.0%

C51H198O46Si47 → 2,4,6,8-tetramethylcyclotetrasiloxane (2370-88-9) + 1,3,5,7,9-pentamethylcyclopentasiloxane (6166-86-5) + 2,4,6,8,10,12-hexamethyl-cyclohexasiloxane (6166-87-6)

Guidance literature:

tris(trimethylsiloxy)aluminum; at 160 - 180 ℃; for 2h; under 50 - 100 Torr; Product distribution / selectivity;

Reference yield: 35.6%

Dichloromethylsilane (75-54-7) → 2,4,6,8-tetramethylcyclotetrasiloxane (2370-88-9) + 1,3,5,7,9-pentamethylcyclopentasiloxane (6166-86-5) + 2,4,6,8,10,12-hexamethyl-cyclohexasiloxane (6166-87-6)

Guidance literature:

With H₂O; In diethyl ether; water; addn. of (CH3)SiHCl2 to a mixt. of ether and crushed ice at -10 to 7°C under vigorous stirring;;

Reference yield: 7.0%

C51H198O46Si47 → C7H20O2Si2 (18297-74-0) + C8H24O3Si3 + 2,4,6-trimethylcyclotrisiloxane (13269-39-1) + 2,4,6,8-tetramethylcyclotetrasiloxane (2370-88-9) + 1,3,5,7,9-pentamethylcyclopentasiloxane (6166-86-5)

Guidance literature:

aluminum isopropoxide; at 160 - 170 ℃; for 2h; under 100 Torr; Product distribution / selectivity;

upstream raw materials:

Dichloromethylsilane

chloro-trimethyl-silane

diethyl ether

water

Downstream raw materials:

2,4,6,8-tetramethyl-2,4,6,8-tetrakis-(2-phenyl-propyl)-cyclotetrasiloxane

2,4,6-trimethyl-2,4,6-tris-(2-phenyl-propyl)-cyclotrisiloxane

1,1,1,3,5,5,5-heptamethyltrisiloxan

Refernces

• 1、 -. "Preparation of cyclic oligosiloxane". Page/Page column 8-9. . Retrieved 2008/06/13.
• 2、 Kopylov, V. M.,Agashkov, S. P.,Sunkovich, G. V.,Prikhod'ko, P. L.. "FEATURES OF INFLUENCE OF HCl ON HYDROLYTIC COPOLYCONDENSATION OF BIFUNCTIONAL ORGANOCHLOROSILANES WITH TRIMETHYLCHLOROSILANE". . p. 1257 - 1261. Retrieved 2007/10/02.