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Sigma-Aldrich

Trimethoxy(octyl)silane

96%

Synonym(s):

Octyltrimethoxysilane

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About This Item

Linear Formula:
CH3(CH2)7Si(OCH3)3
CAS Number:
3069-40-7
Molecular Weight:
234.41
Beilstein:
1926957
EC Number:
221-338-7
MDL number:
MFCD00043053
UNSPSC Code:
12352103
PubChem Substance ID:
24863429
NACRES:
NA.23

Assay

96%

form

liquid

refractive index

n20/D 1.416 (lit.)

density

0.907 g/mL at 25 °C (lit.)

SMILES string

CCCCCCCC[Si](OC)(OC)OC

InChI

1S/C11H26O3Si/c1-5-6-7-8-9-10-11-15(12-2,13-3)14-4/h5-11H2,1-4H3

InChI key

NMEPHPOFYLLFTK-UHFFFAOYSA-N

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General description

Trimethoxy(octyl)silane (TMOS) is an organosilane that is used as a coupling and surface modifying agent to enhance the water contact angle and lower the surface energy.
Trimethoxy(octyl)silane is an organosilane. The effect of hydrolyzed silane on the penetration of water into a lamellar liquid crystal was studied.

Application

Trimethoxy(octyl)silane (TMOS) is used to functionalize the surface of silica to promote the adhesion with gold nanoparticles (AuNPs) for use in the fabrication of acrylate nanocomposite based photonic devices. It can be coated on silica fiber based epoxy to improve the hydrophobic characteristics and to protect the surface from corrosion.
Trimethoxy(octyl)silane was used for the silanization of silica nanoparticles. Surface modification of hydrophobic (T805) titania particles with the silane was reported.

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H315,H331

Hazard Classifications

Acute Tox. 3 Inhalation - Skin Irrit. 2

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 1

Flash Point(F)

203.0 °F - closed cup

Flash Point(C)

95 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Qinzhi Wang et al.
Analytica chimica acta, 1049, 170-178 (2019-01-08)
In the present work, highly sensitive Raman detection of nitenpyram using superhydrophobic filter paper as substrates is introduced. The process is simple, and efficient. By sequentially coating silver dendrites and Octyltrimethoxysilane (OTMOS) on filter paper, we produced highly active surface-enhanced
XPS and FTIR surface characterization of TiO2 particles used in polymer encapsulation.
Langmuir, 17(9), 2664-2669 (2001)
Controlled synthesis of hierarchical ZSM-5 for catalytic fast pyrolysis of cellulose to aromatics.
Chen H, et al.
Journal of Material Chemistry A, 6(42), 21178-21185 (2018)
Ziling Peng et al.
Chemosphere, 201, 110-118 (2018-03-09)
Usually, nanoscale zero-valent iron (NZVI) cannot float on water because of high density and hydrophilic surface. Herein, alkyltrimethoxysilanes with different carbon chain lengths (C1, C8 and C16) were used as "water-repellent legs" to graft onto NZVI, enduing NZVI with hydrophobic
Ruixia Gao et al.
Talanta, 150, 46-53 (2016-02-04)
In this work, a novel Cu(2+)-mediated core-shell bovine hemoglobin imprinted superparamagnetic polymers were synthesized. First, carboxyl group directly-functionalized Fe3O4 nanoparticles were produced by a facile one-pot hydrothermal method. Next, copper ions were introduced to chelate with carboxyl groups and further
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