Cyclodecasiloxane, eicosamethyl-

Base Information

• Chemical Name: Cyclodecasiloxane, eicosamethyl-
• CAS No.: 18772-36-6
• Molecular Formula: C20H60 O10 Si10
• Molecular Weight: 741.545
• UNII: YDP9OL0I11
• DSSTox Substance ID: DTXSID9066411
• Wikidata: Q27294476
• Mol file: 18772-36-6.mol

Synonyms:Cyclodecasiloxane, eicosamethyl-;18772-36-6;EICOSAMETHYLCYCLODECASILOXANE;UNII-YDP9OL0I11;YDP9OL0I11;2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18,20,20-icosamethyl-1,3,5,7,9,11,13,15,17,19-decaoxa-2,4,6,8,10,12,14,16,18,20-decasilacycloicosane;CYCLOMETHICONE 10;Icosamethyl-cyclodecasiloxane;Eicosamethyl-cyclodecasiloxane;SCHEMBL1087120;DTXSID9066411;Q27294476;2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18,20,20-Icosamethylcyclodecasiloxane;2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18,20,20-Icosamethylcyclodecasiloxane #;CYCLODECASILOXANE, 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18,20,20-EICOSAMETHYL-

Chemical Property of Cyclodecasiloxane, eicosamethyl-

Chemical Property:

• Vapor Pressure: 6.34E-08mmHg at 25°C
• Boiling Point: 451.8°Cat760mmHg
• Flash Point: 219.9°C
• PSA: 92.30000
• Density: 0.98g/cm³
• LogP: 7.18400
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 10
• Rotatable Bond Count: 0
• Exact Mass: 740.18791345
• Heavy Atom Count: 40
• Complexity: 586

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

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

Technology Process of Cyclodecasiloxane, eicosamethyl-

There total 3 articles about Cyclodecasiloxane, eicosamethyl- 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: 57.0%

α,ω-Dichlor-eicosamethyl-decasiloxan (18772-68-4) → eicosamethylcyclodecasiloxane (18772-36-6)

Guidance literature:

In diethyl ether; water; at 20 - 30 ℃; Alkaline conditions;

Reference yield:

dodecamethylcyclohexasilane (4098-30-0) → tetradecamethylcycloheptasiloxane (107-50-6) + hexadecamethylcyclooctasiloxane (556-68-3) + octadecamethyl-cyclononasiloxane (556-71-8) + Hexamethylcyclotrisiloxane (541-05-9) + octamethylcyclotetrasiloxane (556-67-2) + decamethylcyclopentasiloxane (541-02-6) + dodecamethyl-cyclohexasiloxane (540-97-6) + 1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15-hexadecamethyloctasiloxane-1,15-diol (4938-87-8) + 1,1,3,3,5,5,7,7,9,9,11,11-dodecamethylhexasiloxane-1,11-diol (4029-00-9) + C30H92O16Si15 + eicosamethylcyclodecasiloxane (18772-36-6) + tetracosamethyl cyclododecasiloxane (18919-94-3) + Tricontamethylcyclopentadecasiloxan (23523-14-0) + α,ω-Dihydroxy-tetradecamethyl-heptasiloxan (3195-63-9) + Docosamethylcycloundecasiloxane (18766-38-6) + α,ω-Dihydroxy-polydimethylsiloxan + hexacosamethyl-cyclotridecasiloxane (23732-94-7) + Octacosamethylcyclotetradeca-siloxane (149050-40-8) + α,ω-Dihydroxy-octadecamethyl-nonasiloxan (18678-58-5) + 1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15,17,17,19,19,21,21,23,23,25,25,27,27,29,29,31,31-dotriacontamethylhexadecasiloxane-1,31-diol + Dotriacontamethylcyclohexadecasiloxane + tetratriacontamethylcycloheptadecasiloxane + C22H68O12Si11 + C24H74O13Si12 + C34H104O18Si17 + permethyldecasiloxane-1,19-diol + C28H86O15Si14

Guidance literature:

dodecamethylcyclohexasilane; With potassium tert-butylate; In tetrahydrofuran; at 20 ℃; for 0.5h; Inert atmosphere; Schlenk technique;

With hydrogen; C₆₂H₅₁N₂Ni₂^(1-)*K⁽¹⁺⁾*2C₄H₁₀O₂; In tetrahydrofuran; at 45 ℃; for 24h; under 1500.15 Torr; Schlenk technique;

With water; In tetrahydrofuran; at -40 - 20 ℃; for 12h; Schlenk technique;

DOI:10.1002/anie.201907525

Reference yield:

C20H62O9Si10 (33006-95-0) → eicosamethylcyclodecasiloxane (18772-36-6)

Guidance literature:

Multi-step reaction with 2 steps

1: aluminum (III) chloride; acetyl chloride / 0.5 h / 40 - 65 °C

2: water; diethyl ether / 20 - 30 °C / Alkaline conditions

With aluminum (III) chloride; acetyl chloride; In diethyl ether; water;

upstream raw materials:

C₂₀H₆₂O₉Si₁₀

α,ω-Dichlor-eicosamethyl-decasiloxan

dodecamethylcyclohexasilane

Refernces

• 1、 -. "High-efficiency macrocyclic dimethyl siloxane compound preparation method". . . Retrieved 2017/10/13.