Tetradecamethylcycloheptasiloxane

Base Information

• Chemical Name: Tetradecamethylcycloheptasiloxane
• CAS No.: 107-50-6
• Molecular Formula: C14H42 O7 Si7
• Molecular Weight: 519.082
• European Community (EC) Number: 203-496-9
• UNII: KCK5L8VU47
• DSSTox Substance ID: DTXSID8059348
• Nikkaji Number: J182.220I
• Wikidata: Q27160005
• RXCUI: 1862729
• Mol file: 107-50-6.mol

Synonyms:TETRADECAMETHYLCYCLOHEPTASILOXANE;107-50-6;Cyclomethicone 7;Cycloheptasiloxane, tetradecamethyl-;2,2,4,4,6,6,8,8,10,10,12,12,14,14-tetradecamethyl-1,3,5,7,9,11,13-heptaoxa-2,4,6,8,10,12,14-heptasilacyclotetradecane;tetradecamethyl cycloheptasiloxane;UNII-KCK5L8VU47;KCK5L8VU47;EINECS 203-496-9;Tetradecamethylcyclotetradecaneheptasiloxane;SCHEMBL375229;C14H42O7Si7;DTXSID8059348;CHEBI:87988;CYCLOHEPTASILOXANE [INCI];C14-H42-O7-Si7;MFCD30534308;AKOS028110683;J182.220I;T2678;T71579;Q27160005;2,2,4,4,6,6,8,8,10,10,12,12,14,14-Tetradecamethylcycloheptasiloxane;2,2,4,4,6,6,8,8,10,10,12,12,14,14-Tetradecamethylcycloheptasiloxane #;2,2,4,4,6,6,8,8,10,10,12,12,14,14-TETRADECAMETHYLCYCLOTETRADECANEHEPTASILOXANE;CYCLOHEPTASILOXANE, 2,2,4,4,6,6,8,8,10,10,12,12,14,14-TETRADECAMETHYL-;D7

Chemical Property of Tetradecamethylcycloheptasiloxane

Chemical Property:

• Vapor Pressure: 0.000217mmHg at 25°C
• Melting Point: -32°C(lit.)
• Refractive Index: 1.4020 to 1.4060
• Boiling Point: 336.5°Cat760mmHg
• Flash Point: 150.7°C
• PSA: 64.61000
• Density: 0.97g/cm³
• LogP: 5.02880
• Storage Temp.: Refrigerator
• Solubility.: Benzene (Slightly), Chloroform
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 7
• Rotatable Bond Count: 0
• Exact Mass: 518.13153942
• Heavy Atom Count: 28
• Complexity: 385

Purity/Quality:

98%,99%, ^*data from raw suppliers

Tetradecamethylcycloheptasiloxane ^*data from reagent 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](O1)(C)C)(C)C)(C)C)(C)C)(C)C)(C)C)C
• Uses: Tetradecamethylcycloheptasiloxane is used in cosmetic and personal care products.

Technology Process of Tetradecamethylcycloheptasiloxane

There total 20 articles about Tetradecamethylcycloheptasiloxane 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: 80.6%

α,ω-Dichlor-tetradecamethyl-heptasiloxan (3004-00-0) → tetradecamethylcycloheptasiloxane (107-50-6)

Guidance literature:

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

Reference yield: 79.0%

phenyltrimethylsilyl ether (1529-17-5) → tetradecamethylcycloheptasiloxane (107-50-6) + dimethyl-diphenoxy-silane (3440-02-6) + C13H26O3Si3 (18406-79-6) + C11H20O2Si2

Guidance literature:

With gallium(III) iodide; at 175 - 180 ℃; for 3h; Yield given; Further byproducts given. Title compound not separated from byproducts;

Reference yield: 42.0%

dimethylsilicon dichloride (75-78-5,30107-43-8) → tetradecamethylcycloheptasiloxane (107-50-6) + Hexamethylcyclotrisiloxane (541-05-9) + octamethylcyclotetrasiloxane (556-67-2) + decamethylcyclopentasiloxane (541-02-6) + dodecamethyl-cyclohexasiloxane (540-97-6)

Guidance literature:

With H₂O; In water; slow addn. of 4l (CH3)2SiCl2 to 12l H2O at 15-20°C withorous stirring; further products;; distn.;;

DOI:10.1021/ja01207a004

upstream raw materials:

diethoxy dimethylsilane

dimethylsilicon dichloride

Hexamethylcyclotrisiloxane

phenyltrimethylsilyl ether

Refernces

• 1、 Kuate, Alain C. Tagne,Alexandru, Mihaela,Freytag, Matthias,Racles, Carmen,Cazacu, Maria,Jones, Peter G.,Tamm, Matthias. "Siloxane-bridged [n]troticenophanes: Syntheses, structures and ring-opening reactions". . p. 628 - 637. Retrieved 2014.
• 2、 -. "METHOF FOR PRODUCING HYDRIDOSILANES". Paragraph 0071-0072. . Retrieved 2019/11/22.
• 3、 Neumeyer, Felix,Auner, Norbert. "One-Step Synthesis of Siloxanes from the Direct Process Disilane Residue". supporting information. p. 17165 - 17168. Retrieved 2016/11/23.