Octadecyltrimethoxysilane

Base Information

• Chemical Name: Octadecyltrimethoxysilane
• CAS No.: 3069-42-9
• Deprecated CAS: 1253692-82-8
• Molecular Formula: C21H46O3Si
• Molecular Weight: 374.68
• Hs Code.: 29319090
• European Community (EC) Number: 221-339-2
• UNII: A5R7Q56VX6
• DSSTox Substance ID: DTXSID40883733
• Nikkaji Number: J205.382I
• Wikipedia: Octadecyltrimethoxysilane
• Wikidata: Q10859606
• Mol file: 3069-42-9.mol

Synonyms:n-octadecyltrimethoxysilane;OTMS-silane

Chemical Property of Octadecyltrimethoxysilane

Chemical Property:

• Appearance/Colour: Colorless transparent liquid
• Vapor Pressure: 0.00289mmHg at 25°C
• Melting Point: 16-17 °C(lit.)
• Refractive Index: n20/D 1.439(lit.)
• Boiling Point: 294.2 °C at 760 mmHg
• Flash Point: 140 °C
• PSA: 27.69000
• Density: 0.871 g/cm³
• LogP: 7.12600
• Storage Temp.: Inert atmosphere,Room Temperature
• Solubility.: Chloroform (Slightly)
• Water Solubility.: 190-437000ng/L at 20℃
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 20
• Exact Mass: 374.32162186
• Heavy Atom Count: 25
• Complexity: 249

Purity/Quality:

99% ^*data from raw suppliers

Trimethoxy ^*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

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Metalloid Compounds (Silicon)
• Canonical SMILES: CCCCCCCCCCCCCCCCCC[Si](OC)(OC)OC
• Uses: For preparing hydrophobic coatings and self-assembled monolayers. OTS is used for the development of self assembled monolayers(SAMs). OTS is also used to modify the silica dielectric surface in organic field effect transistors.

Technology Process of Octadecyltrimethoxysilane

There total 6 articles about Octadecyltrimethoxysilane 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: 84.0%

trimethoxysilane (2487-90-3) + octadec-1-ene (112-88-9) → n-octadecyltrimethoxysilane (3069-42-9)

Guidance literature:

With 2C₄H₉O^(1-)*Ni⁽²⁺⁾*(x)KCl; In tetrahydrofuran; at 20 ℃; for 12h; Glovebox; Inert atmosphere;

DOI:10.1002/anie.201606832

Reference yield: 61.0%

potassium methanolate (865-33-8) + Trihydroxyoctadecylsilan (105116-02-7) → n-octadecyltrimethoxysilane (3069-42-9)

Guidance literature:

In hexane; at 20 ℃; for 120h;

DOI:10.1016/S0008-6215(99)00173-1

Reference yield:

methanol (67-56-1) + octadecyltrichlorosilane (112-04-9) → n-octadecyltrimethoxysilane (3069-42-9)

Guidance literature:

In Petroleum ether; at 25 - 30 ℃; for 7h;

upstream raw materials:

potassium methanolate

Trihydroxyoctadecylsilan

octadecyltrichlorosilane

methanol

Downstream raw materials:

octadecyl silane

silica gel

Refernces

• 1、 Buslov, Ivan,Song, Fang,Hu, Xile. "An Easily Accessed Nickel Nanoparticle Catalyst for Alkene Hydrosilylation with Tertiary Silanes". supporting information. p. 12295 - 12299. Retrieved 2016/10/13.
• 2、 -. "Method for Attachment of Silicon-Containing Compounds to a Surface and for Synthesis of Hypervalent Silicon-Compounds". . . Retrieved 2012/06/01.