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741442

Sigma-Aldrich

(3-Aminopropyl)triethoxysilane

≥98.0%

Synonym(s):

APTS, 3-Triethoxysilylpropylamine, APTES

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About This Item

Linear Formula:
H2N(CH2)3Si(OC2H5)3
CAS Number:
919-30-2
Molecular Weight:
221.37
Beilstein/REAXYS Number:
1754988
EC Number:
213-048-4
MDL number:
MFCD00008207
UNSPSC Code:
12352103
PubChem Substance ID:
329765497
NACRES:
NA.23

Key Documents

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Quality Level

100

assay

≥98.0%

form

liquid

color

APHA: ≤25

refractive index

n20/D 1.421

bp

217 °C/760 mmHg (lit.)

density

0.929 g/mL at 25 °C
0.946 g/mL at 25 °C (lit.)

SMILES string

CCO[Si](CCCN)(OCC)OCC

InChI

1S/C9H23NO3Si/c1-4-11-14(12-5-2,13-6-3)9-7-8-10/h4-10H2,1-3H3

InChI key

WYTZZXDRDKSJID-UHFFFAOYSA-N

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General description

(3-Aminopropyl)triethoxysilane (APTES) is a versatile organosilane widely used in material science for surface modification and functionalization. Its structure contains a triethoxysilane group that hydrolyzes in the presence of moisture to form silanol groups, which can covalently bond with hydroxylated surfaces such as glass, silica, and metal oxides. Additionally, the terminal amino group (-NH₂) allows for further reaction with a wide range of organic or polymeric functional groups, making APTES an effective molecular bridge between inorganic and organic phases. This bifunctionality makes it ideal for improving adhesion in composites, creating self-assembled monolayers (SAMs), and enhancing the compatibility and dispersion of nanoparticles in various matrices. APTES is also compatible with sol-gel processes and exhibits good thermal stability, making it suitable for use in sensors, coatings, electronic devices, and hybrid nanomaterials.

Application

3-Aminopropyl)triethoxysilane (APTES) can be used :
  • For the surface functionalization of silica nanoparticles to enhance their colloidal stability.
  • As a self-assembled monolayer (SAM) in the fabrication of amorphous silicon thin-film solar cells, to enhance their performance and stability.
  • To modify zinc oxide quantum dots for enhancing the performance of fluorescent orthodontic adhesives.
  • Synthesis of Fe3O4@SiO2/APTS/Ru magnetic nanocomposite catalyst for hydrogenation reactions

Features and Benefits

  • (≥98.0%) ensures effective bonding and modification without the interference of impurities, leading to improved adhesion and durability of coatings.
  • The absence of contaminants allows for consistent performance in enhancing the compatibility between organic and inorganic materials, resulting in stronger and more reliable composites.
  • It ensures that the functional groups are readily available for reactions, leading to efficient immobilization and improved sensitivity of biosensors.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1

Storage Class

8A - Combustible corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

195.1 °F - closed cup

flash_point_c

90.6 °C - closed cup

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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ8502
MKCP7258
MKCN4743
MKCM7627
MKCK6407

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Covalent immobilisation of antibodies in Teflon-FEP microfluidic devices for the sensitive quantification of clinically relevant protein biomarkers
Pivetal J, et al.
Analyst, 142(6), 959-968 (2017)
Structure and growth of chromophore-functionalized (3-aminopropyl) triethoxysilane self-assembled on silicon
Heiney PA, et al.
Langmuir, 16(6), 2651-2657 (2000)
Attachment of 3-(aminopropyl) triethoxysilane on silicon oxide surfaces: dependence on solution temperature
Pasternack RM, et al.
Langmuir, 24(22), 12963-12971 (2008)
Non-neurogenic SVZ-like niche in dolphins, mammals devoid of olfaction
Parolisi R, et al.
Brain Structure &Amp; Function, 222(6), 2625-2639 (2017)
Plasma anodized ZE41 magnesium alloy sealed with hybrid epoxy-silane coating
Ivanou DK, et al
Corrosion Science, 73(6), 300-308 (2013)
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