Methyltris(trimethylsiloxy)silane

Base Information

• Chemical Name: Methyltris(trimethylsiloxy)silane
• CAS No.: 17928-28-8
• Deprecated CAS: 500992-37-0
• Molecular Formula: C10H30O3Si4
• Molecular Weight: 310.688
• Hs Code.: 2934999090
• European Community (EC) Number: 241-867-7
• UN Number: 1993
• UNII: S73ZQI0GXM
• DSSTox Substance ID: DTXSID9025669
• Nikkaji Number: J260.797B
• Wikidata: Q27288754
• RXCUI: 1311614
• Mol file: 17928-28-8.mol

Synonyms:METHYLTRIS(TRIMETHYLSILOXY)SILANE;17928-28-8;Methyl trimethicone;1,1,1,3,5,5,5-Heptamethyl-3-((trimethylsilyl)oxy)trisiloxane;methyl tris(trimethylsiloxy)silane;Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-[(trimethylsilyl)oxy]-;trimethyl-[methyl-bis(trimethylsilyloxy)silyl]oxysilane;EINECS 241-867-7;UNII-S73ZQI0GXM;S73ZQI0GXM;1,1,1,3,5,5,5-Heptamethyl-3-[(trimethylsilyl)oxy]trisiloxane;Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-((trimethylsilyl)oxy)-;EC 241-867-7;1,1,1,3,5,5,5-heptamethyl-3-trimethylsilanyloxy-trisiloxane;Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-(trimethylsiloxy)-;SCHEMBL41363;DTXSID9025669;TMF-1.5;CHEBI:144342;METHYL TRIMETHICONE [INCI];LS-947;Methyl tris-(trimethylsilyloxy)silane;MFCD00040007;AKOS024462729;FS-3855;METHYLTRIS(TRIMETHYLSILOXY) SILANE;A3956;FT-0637627;H1612;D91052;A881262;Q27288754;1,1,1,3,5,5,5-HEPTAMETHYL-3-(TRIMETHYLSILOXY)TRISILOXANE;2,2,4,6,6-pentamethyl-4-[(trimethylsilyl)oxy]-3,5-dioxa-2,4,6-trisilaheptane

Chemical Property of Methyltris(trimethylsiloxy)silane

Chemical Property:

• Appearance/Colour: Clear colorless liquid
• Vapor Pressure: 0.000814mmHg at 25°C
• Melting Point: -76 °C
• Refractive Index: 1.3880
• Boiling Point: 235.421 °C at 760 mmHg
• Flash Point: 88.068 °C
• PSA: 27.69000
• Density: 0.874 g/cm³
• LogP: 4.10960
• Water Solubility.: <0.1 g/100 mL at 20℃
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 6
• Exact Mass: 310.12720095
• Heavy Atom Count: 17
• Complexity: 209
• Transport DOT Label: Combustible Liquid

Purity/Quality:

99.9% ^*data from raw suppliers

Methyltris(trimethylsiloxy)silane ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 36/37/38-10
• Safety Statements: 26-36/37/39-36-16

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: C[Si](C)(C)O[Si](C)(O[Si](C)(C)C)O[Si](C)(C)C
• Uses: Methyltris(trimethylsiloxy)silane was used in the study of thermal rearrangement of branched-chain methylpolysiloxanes.

Technology Process of Methyltris(trimethylsiloxy)silane

There total 27 articles about Methyltris(trimethylsiloxy)silane 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: 96.9%

Methyltrimethoxysilan (1185-55-3) + Hexamethyldisiloxane (107-46-0) → methyltrimethicone (17928-28-8)

Guidance literature:

Hexamethyldisiloxane; With oxygen-containing linear phosphazene chloride; In dichloromethane; isopropyl alcohol; at 10 ℃; for 1.66667h;

Methyltrimethoxysilan; In dichloromethane; water; isopropyl alcohol; at 5 - 25 ℃; for 12h; Temperature; Reagent/catalyst;

Reference yield: 74.0%

dimethyl sulfoxide (67-68-5,8070-53-9) → chloro-methylsulfanyl-methane (2373-51-5) + methyltrimethicone (17928-28-8) + methylbis(trimethylsilyloxy)vinylsilane (5356-85-4) + C24H54O7Si8

Guidance literature:

With Hexamethyldisiloxane; Dichloromethylvinylsilane; Further byproducts given;

DOI:10.1007/BF02495612

Reference yield: 70.8%

→ methyltrimethicone (17928-28-8)

Guidance literature:

upstream raw materials:

Dichloromethylsilane

Hexamethyldisiloxane

chloro-trimethyl-silane

Methyltrichlorosilane

Downstream raw materials:

trimethylsilyl fluoride

3-fluoroheptamethyltrisiloxane

1,1-difluorotetramethyldisiloxane

tetramethylsilane

Refernces

• 1、 -. "SUPER ACIDS AND BASES AS DEHYDROCONDENSATION CATALYSTS". Paragraph 0076; 0077; 0081. . Retrieved 2016/12/26.
• 2、 Igarashi, Masayasu,Kubo, Keiko,Matsumoto, Tomohiro,Sato, Kazuhiko,Ando, Wataru,Shimada, Shigeru. "Pd/C-catalyzed cross-coupling reaction of benzyloxysilanes with halosilanes for selective synthesis of unsymmetrical siloxanes". . p. 19099 - 19102. Retrieved 2014/05/20.