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Merck

741442

(3-Aminopropyl)triethoxysilane

≥98.0%

(3-Aminopropyl)triethoxysilane

Synonym(s):

APTS, 3-Triethoxysilylpropylamine, APTES

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100 ML

€82.90

500 ML

€265.00

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About This Item

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

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Product Name

(3-Aminopropyl)triethoxysilane, ≥98.0%

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

SMILES string

CCO[Si](CCCN)(OCC)OCC

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.)

Quality Level

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1 of 4

This Item
440140A3648706493
form

liquid

form

liquid

form

liquid

form

liquid

assay

≥98.0%

assay

99%

assay

≥98%

assay

≥98%

density

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

density

0.946 g/mL at 25 °C (lit.)

density

0.946 g/mL at 25 °C (lit.)

density

0.946 g/mL at 25 °C (lit.)

bp

217 °C/760 mmHg (lit.)

bp

217 °C/760 mmHg (lit.)

bp

217 °C/760 mmHg (lit.)

bp

217 °C/760 mmHg (lit.)

refractive index

n20/D 1.421

refractive index

-

refractive index

-

refractive index

-

color

APHA: ≤25

color

-

color

-

color

-

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.

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.

pictograms

CorrosionExclamation mark

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

WGK 1

flash_point_f

195.1 °F - closed cup

flash_point_c

90.6 °C - closed cup


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Structure and growth of chromophore-functionalized (3-aminopropyl) triethoxysilane self-assembled on silicon
Heiney PA, et al.
Langmuir, 16(6), 2651-2657 (2000)
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)
Plasma anodized ZE41 magnesium alloy sealed with hybrid epoxy-silane coating
Ivanou DK, et al
Corrosion Science, 73(6), 300-308 (2013)
Non-neurogenic SVZ-like niche in dolphins, mammals devoid of olfaction
Parolisi R, et al.
Brain Structure &Amp; Function, 222(6), 2625-2639 (2017)
Attachment of 3-(aminopropyl) triethoxysilane on silicon oxide surfaces: dependence on solution temperature
Pasternack RM, et al.
Langmuir, 24(22), 12963-12971 (2008)

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Questions

1–7 of 7 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. How to coat the product APTES (741442) on high density polyethylene surface?

    1 answer
    1. The high-density polyethylene surface requires thorough cleaning with a solvent like isopropyl alcohol or ethanol to eliminate contaminants. To enhance adhesion, the surface can be treated to increase roughness through plasma treatment or by using sandpaper to create a micro-rough texture. After cleaning, prepare a solution by dissolving this product in a suitable solvent, typically ethanol or toluene. A common concentration range is 1-5% (w/v), depending on the desired coating thickness. Apply the solution to the polyethylene surface using methods such as spraying, dipping, or brushing. Allow the surface to cure at room temperature or by applying gentle heat (60-80°C) in an oven.

      Helpful?

  3. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  4. How to coat the product APTES (741442) on a Si wafer surface?

    1 answer
    1. To coat APTES (741442) on a Si wafer surface:
      1. Prepare a 1.6% APTES solution in toluene.
      2. Soak the Si wafer in the solution for 2.5 hours.
      3. Rinse the wafer using ethanol and water three times.
      It's important to note that no initiator is needed. Varying the concentration and soaking time can result in different thicknesses of the APTES layer, but a layer that is too thick may exfoliate quickly.

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  5. What is the appropiate septum/cover reference to close this bottle? Cannot find it in your cathalogue.

    1 answer
    1. This product is packaged in amber glass bottles. The closure is a polypropylene screw cap with PTFE liner. Replacing the cap with a septum is not recommended. See below for images of the bottle and cap.

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  6. What is the concentration of the (3-Aminopropyl)triethoxysilane, commonly known as APTES?

    1 answer
    1. The (3-Aminopropyl)triethoxysilane, which is a neat liquid, is 4.3 M. This is based on a density of 0.946 g/mL and a molecular weight of 221.37.

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  7. What is the Department of Transportation shipping information for this product?

    1 answer
    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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