376213
Trimethoxy(octadecyl)silane
technical grade
Synonym(s):
Octadecyltrimethoxysilane
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About This Item
Linear Formula:
CH3(CH2)17Si(OCH3)3
CAS Number:
Molecular Weight:
374.67
UNSPSC Code:
12352103
NACRES:
NA.23
PubChem Substance ID:
EC Number:
221-339-2
Beilstein/REAXYS Number:
5791830
MDL number:
grade
technical grade
Quality Level
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
General description
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.
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.
Application
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.
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.
Storage Class
10 - Combustible liquids
wgk
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
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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
Kristen S Wilson et al.
Biomaterials, 26(25), 5095-5103 (2005-03-29)
This study was designed to determine the effect of varying the chemistry of the interfacial phase on critical composite properties in dental nanocomposite materials. Silica nanoparticles were silanized with varying ratios of 3-methacryloxypropyltrimethoxysilane (MPTMS) and octyltrimethoxysilane (OTMS) while keeping the
Superhydrophobicity, UV protection and oil/water separation properties of fly ash/Trimethoxy (octadecyl) silane coated cotton fabrics.
Khan MZ, et al.
Carbohydrate Polymers, 202(2-3), 571-580 (2018)
Superhydrophobic and photocatalytic self-cleaning cotton.
Afzal S, et al.
Journal of Material Chemistry A, 2(42), 18005-18011 (2014)
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)
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