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Sigma-Aldrich

Triethoxy(octyl)silane

97%

Synonym(s):

Octyltriethoxysilane

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100 ML
$66.60
1 L
$182.00

About This Item

Linear Formula:
CH3(CH2)7Si(OC2H5)3
CAS Number:
2943-75-1
Molecular Weight:
276.49
Beilstein/REAXYS Number:
2325287
EC Number:
220-941-2
MDL number:
MFCD00039883
UNSPSC Code:
12352103
PubChem Substance ID:
24867577
NACRES:
NA.23

$66.60

In StockDetails

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Quality Level

100

assay

97%

form

liquid

refractive index

n20/D 1.417 (lit.)

bp

84-85 °C/0.5 mmHg (lit.)

density

0.88 g/mL at 25 °C (lit.)

SMILES string

CCCCCCCC[Si](OCC)(OCC)OCC

InChI

1S/C14H32O3Si/c1-5-9-10-11-12-13-14-18(15-6-2,16-7-3)17-8-4/h5-14H2,1-4H3

InChI key

MSRJTTSHWYDFIU-UHFFFAOYSA-N

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General description

Triethoxy(octyl)silane (TEOS) is an alkoxide organosilane with four ethyl ester sidechains. It is used as a self-assembled monolayer and provides a hydrophobic coating with low surface energy. The water contact angle is in the range of 150-170°.[1]

Application

Aluminium alloy can be coated with TEOS and 1H, 1H, 2H, 2H perfluorooctyl trichloro silane (PFOTS) to obtain superhydrophobicity with a high contact angle of 160-170° for vessel hulls and marine systems.[2] It may be used to stabilize the porosity for a colorimetric sensor for immediate color changes, which finds potential application in the detection of toxic gases.[3] It may also be used in the production of hybrid zeolites.[4]
Triethoxy(octyl)silane may be used to prepare several formulations for fabricating low-cost, colorimetric sensor arrays to detect toxic gases.[5]

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H315

Hazard Classifications

Skin Irrit. 2

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

212.0 °F - closed cup

flash_point_c

100 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

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Certificates of Analysis (COA)

Lot/Batch Number
MKCW9797
MKCV3480
MKCQ4447
MKCM7970
SHBJ4582

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Robust multifunctional superhydrophobic coatings with enhanced water/oil separation, self-cleaning, anti-corrosion, and anti-biological adhesion.
Cho E, et al.
Chemical Engineering Journal, 314, 347-357 (2017)
A colorimetric sensor array of porous pigments
Analyst, 134(12), 2453-2457 (2009)
Synthesis of hybrid zeolites using a solvent-free method in the presence of different organosilanes.
Petkowicz I, et al.
Microporous and Mesoporous Materials : The Official Journal of the International Zeolite Association, 241(12), 98-106 (2017)
Fabrication of Superhydrophobic Al5083 Aluminum Alloy for Marine Applications.
Javad F, et al.
Protection of Metals and Physical Chemistry of Surfaces, 54(5), 899-908 (2018)
Danielle R Scheff et al.
Soft matter, 16(24), 5659-5668 (2020-06-11)
Macromolecules can phase separate to form liquid condensates, which are emerging as critical compartments in fields as diverse as intracellular organization and soft materials design. A myriad of macromolecules, including the protein FUS, form condensates which behave as isotropic liquids.
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