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Merck
CN

52360

Hexadecyltrimethoxysilane

technical, ≥85% (GC)

Synonym(s):

Trimethoxyhexadecylsilane

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About This Item

Linear Formula:
H3C(CH2)15Si(OCH3)3
CAS Number:
16415-12-6
Molecular Weight:
346.62
Beilstein:
1949851
EC Number:
240-464-3
MDL number:
MFCD00069149
UNSPSC Code:
12352103
PubChem Substance ID:
57651368
NACRES:
NA.23

Key Documents

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grade

technical

Quality Level

100

Assay

≥85% (GC)

form

liquid

impurities

isomers

refractive index

n20/D 1.44

density

0.89 g/mL at 20 °C (lit.)

SMILES string

CCCCCCCCCCCCCCCC[Si](OC)(OC)OC

InChI

1S/C19H42O3Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-23(20-2,21-3)22-4/h5-19H2,1-4H3

InChI key

RSKGMYDENCAJEN-UHFFFAOYSA-N

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Application

Hexadecyltrimethoxysilane can be used as:
  • A hydrophobic modifier to modify silica nanoparticles, enabling the creation of superhydrophobic particles and composites, which are ideal for applications in coatings and textiles.
  • A key component in the fabrication of durable, fluorine-free superhydrophobic coatings by modifying halloysite nanotubes embedded in silicone-acrylic polymer films.
  • An additive in the development of hydrophobic aerogels based on nanocellulose, where HDTMS contributes to the creation of materials with high oil adsorption capacities.

Features and Benefits

  • Thermally Stable: Suitable for high-temperature applications and thermal curing processes.
  • Moisture-Sensitive: Hydrolyzes in the presence of water to form reactive silanol groups that bond covalently to surfaces.
  • Long Alkyl Chain: Provides excellent surface hydrophobicity due to its high surface energy barrier.

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

247.1 °F - closed cup

Flash Point(C)

119.5 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SDBB6686
SDBB0932
BCCJ5501
BCCG9774
BCCG1221

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Hexadecyltriethoxysilane-induced dispersions of metal oxide nanoparticles in nonpolar solvents.
Gomathi A and Rao CNR
Journal of Cluster Science, 19(1), 247-257 (2008)
Preparation and characterization of long-chain alkyl silane-functionalized graphene film.
Ma WS, et al.
J. Mater. Sci., 48(1), 156-161 (2013)
Liquid nucleating additives for improving thermal insulating properties and mechanical strength of polyisocyanurate foams.
Kang MJ, et al.
J. Mater. Sci., 45(19), 5412-5419 (2010)
Corrosion protection of aluminum pigments by sol?gel coatings
Supplit R and Schubert U
Corrosion Science, 49(8), 3325-3332 (2007)
Organic modification of TEOS based silica aerogels using hexadecyltrimethoxysilane as a hydrophobic reagent
Nagaraja DH, et al.
Applied Surface Science, 253(3), 1566-1572 (2006)

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