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376213

Sigma-Aldrich

Trimethoxy(octadecyl)silane

technical grade

Sinónimos:

Octadecyltrimethoxysilane

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About This Item

Fórmula lineal:
CH3(CH2)17Si(OCH3)3
Número de CAS:
3069-42-9
Peso molecular:
374.67
Beilstein/REAXYS Number:
5791830
EC Number:
221-339-2
MDL number:
MFCD00043060
UNSPSC Code:
12352103
PubChem Substance ID:
24863428
NACRES:
NA.23

grade

technical grade

Quality Level

100

form

liquid

refractive index

n20/D 1.439 (lit.)

mp

16-17 °C (lit.)

density

0.883 g/mL at 25 °C (lit.)

SMILES string

CCCCCCCCCCCCCCCCCC[Si](OC)(OC)OC

InChI

1S/C21H46O3Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-25(22-2,23-3)24-4/h5-21H2,1-4H3

InChI key

SLYCYWCVSGPDFR-UHFFFAOYSA-N

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General description

Trimethoxy(octadecyl)silane (OTMS) is an alkyl silane that functionalizes a variety of nanoparticle surfaces and facilitates a hydrophobic coating with a high-water contact angle and low surface energy.
Trimethoxy(octadecyl)silane (OTS) is an important alkylsilane that can form strong covalent bonds with silicon oxide and serves as a potential lubricant for micro electro mechanical systems (MEMS). OTS is largely used for surface chemical modification, modifying silica resulted in an increased charge carrier mobility for a variety of vacuum deposited and solution cast organic semiconductors.

Application

Magnetic nanoparticles (Fe2O3) can be surface modified with OTMS. It forms a sorbent for the magnetic solid-phase extraction (MSPE) of endocrine disruptors (organochlorine pesticides) from milk samples. It may form a corrosion protective coating on AZ31 magnesium alloy that finds potential application in automotive industry. It may also be used to form a composite with fly ash that can be coated to achieve a superhydrophobic and UV-protected cotton fabric.
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.

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

284.0 °F - closed cup

flash_point_c

140 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

Certificados de análisis (COA)

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Noncovalent assembly of reduced graphene oxide and alkyl-grafted mesoporous silica: an effective drug carrier for near-infrared light-responsive controlled drug release.
He D, et al.
Journal of Material Chemistry B: Materials for Biology and Medicine, 3(27), 5588-5594 (2015)
Evaluation of magnetic nanoparticles to serve as solid-phase extraction sorbents for the determination of endocrine disruptors in milk samples by gas chromatography mass spectrometry.
Synaridou M, et al.
Journal of Chromatography A, 1348(27), 71-79 (2014)
Sun Hong Kim et al.
ACS nano, 13(6), 6531-6539 (2019-05-11)
Both self-healable conductors and stretchable conductors have been previously reported. However, it is still difficult to simultaneously achieve high stretchability, high conductivity, and self-healability. Here, we observed an intriguing phenomenon, termed "electrical self-boosting", which enables reconstructing of electrically percolative pathways
Koji Mitamura et al.
The journal of physical chemistry. B, 111(30), 8891-8898 (2007-07-13)
Hydrophobic gold nanorods were fabricated from hydrophilic gold nanorods coated with hexadecyltrimethylammonium bromide by treating with mercaptopropyltrimethoxysilane (MPS) and subsequently octadecyltrimethoxysilane (ODS). The fabrication of the hydrophobic shell went through the process of (1) binding MPS onto the nanorods, (2)
Rodrigo Brambilla et al.
Analytical and bioanalytical chemistry, 391(7), 2673-2681 (2008-05-28)
A series of octadecylsilane-modified silicas were prepared by sol-gel and grafting methods. Carbon contents and octadecyl chain conformations were shown to depend on the preparative route. Grafting engenders a low carbon content and a liquid-like chain conformation, while the sol-gel
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