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Merck
CN

376221

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
UNSPSC Code:
12352103
NACRES:
NA.23
PubChem Substance ID:
24863429
EC Number:
221-338-7
Beilstein/REAXYS Number:
1926957
MDL number:
MFCD00043053

Key Documents

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Product Name

Trimethoxy(octyl)silane, 96%

InChI key

NMEPHPOFYLLFTK-UHFFFAOYSA-N

InChI

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

SMILES string

CCCCCCCC[Si](OC)(OC)OC

assay

96%

form

liquid

refractive index

n20/D 1.416 (lit.)

density

0.907 g/mL at 25 °C (lit.)

Quality Level

100

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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.

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.

pictograms

Skull and crossbones
GHS06

signalword

Danger

hcodes

H315,H331

Hazard Classifications

Acute Tox. 3 Inhalation - Skin Irrit. 2

Storage Class

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

ppe

Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCBW7961
BCBF1594V
1451612V
1451612
0001181503

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Elena Buratti et al.
Polymers, 12(11) (2020-11-14)
In this work, soft microgels of Poly(N-Isopropylacrylamide) (PNIPAm) at two different sizes and of interpenetrated polymer network (IPN) composed of PNIPAm and Poly(Acrylic Acid) (PAAc) were synthesized. Then, solutions of these different types of microgels have been spin-coated on glass
Hydrolysis and condensation of octyltrimethoxysilane in nonionic liquid crystals
Colloids and Surfaces. A, Physicochemical and Engineering Aspects, 88(2-3), 235-241 (1994)
Self-cleaning superhydrophobic epoxy coating based on fibrous silica-coated iron oxide magnetic nanoparticles.
Alamri H, et al.
Journal of Colloid and Interface Science, 513(42), 349-356 (2018)
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
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