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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:
1754988
EC Number:
213-048-4
MDL number:
MFCD00008207
UNSPSC Code:
12352103
PubChem Substance ID:
329765497
NACRES:
NA.23

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 an aminosilane that is majorly utilized in the chemical modification of a variety of surfaces such as alumina and silica. It can act as an adhesion promoter between the polymer and the substrate material. It can also be used in the immobilization of surface molecules. The attachment of APTES molecules with the atoms present on the surface happens through chemisorption which results in the formation of a self-assembled monolayer (SAM) on the substrate.

Application

APTES can be used in a variety of applications such as an anti-corrosive coating, surface treatment for biological applications, and capping of surface atoms for diagnostic applications.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H302,H314,H317

Hazard Classifications

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

Storage Class Code

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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Certificates of Analysis (COA)

Lot/Batch Number
MKCW6496
MKCW9661
MKCT1515
MKCQ8502
MKCP7258

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

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    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.

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

    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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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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