APTS, APTES, 3-Triethoxysilylpropylamine
Linear Formula:
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
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PubChem Substance ID:

Quality Level






hematology: suitable
histology: suitable


11 (20 °C, 20 g/L)


217 °C/760 mmHg (lit.)


220-222 °C


0.946 g/mL at 25 °C (lit.)

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Diagnostic Assay Manufacturing

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room temp

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  • (3-Aminopropyl)triethoxysilane has been used for the preparation of cadherin surfaces on glass slides.
  • It has been used for the preparation of RGD (Arg-Gly-Asp)-treated silicone membranes.
  • It has been used for the preparation of the avidin–biotin coverslips.


100, 500 mL in glass bottle

Biochem/physiol Actions

(3-Aminopropyl)triethoxysilane forms aminopropyl derivative of glass, an adsorbent for affinity chromatography. It is used to prepare positively charged slides suitable for use with various immunohistochemical and in situ hybridization procedures.


CorrosionExclamation mark

Signal Word


Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


UN 2735PSN1 8 / PGII

WGK Germany


Flash Point(F)

199.4 °F - closed cup

Flash Point(C)

93 °C - closed cup

Certificate of Analysis

Certificate of Origin

  1. 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.

  2. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  3. How does Product A3648, (3-Aminopropyl)triethoxysilane, compare to poly-L-lysine for binding tissue to glass surfaces?

    This product has been cited as being a better tissue adhesive than poly-L-lysine. Maddox PH, Jenkins D., 3-Aminopropyltriethoxysilane (APES): a new advance in section adhesion. J Clin Pathol., 40(10):1256-7 (1987).

  4. Can Product A3648, (3-Aminopropyl)triethoxysilane, be used to coat controlled pore glass?

    To coat controlled-pore glass beads for affinity chromatography, the following method is recommended:1. Treat 1 g of clean beads with 20 mL of a 10% aqueous A3648 (pH 3 to 4) at 75 °C for 2 hours.2. Filter the beads to remove the solution and dry overnight in a 115 °C oven. See: J. Dairy Sci., 73, 2720-2730 (1990).

  5. Can I buy glass slides already treated with Product A3648, (3-Aminopropyl)triethoxysilane?

    Yes. Silane Prep slides, Product No. S4651, are produced using A3648. These slides have an expiration period of 24 months.

Apoptosis and survival of osteoblast-like cells are regulated by surface attachment.
Grigoriou V, et al.
The Journal of Biological Chemistry, 280, 1733-1739 (2005)
Real-time observation of a single DNA digestion by lambda exonuclease under a fluorescence microscope field.
Matsuura S, et al.
Nucleic Acids Research, 29, E79-E79 (2001)
Vladimir Gubala et al.
Analytica chimica acta, 760, 75-82 (2012-12-26)
Herein a simple analytical method is presented for the characterization of biomolecule adsorption on cyclo olefin polymer (COP, trade name: Zeonor(®)) substrates which are widely used in microfluidic lab-on-a-chip devices. These Zeonor(®) substrates do not possess native functional groups for...
Dan Zheng et al.
Talanta, 99, 22-28 (2012-09-13)
A mediatorless glucose biosensor was developed by the immobilization of glucose oxidase (GOx) to graphene-functionalized glassy carbon electrode (GCE). The surface of GCE was functionalized with graphene by incubating it with graphene dispersed in 3-aminopropyltriethoxysilane (APTES), which acted both as...
Peng Yuan et al.
Nanotechnology, 23(37), 375705-375705 (2012-08-28)
The surfaces of naturally occurring halloysite nanotubes were functionalized with γ-aminopropyltriethoxysilane (APTES), which was found to have a substantial effect on the loading and subsequent release of a model dye molecule. APTES was mostly anchored at the internal lumen surface...

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