This product is a neat or pure liquid that has not been diluted in a solvent. This material has a molecular weight of 221.37, a density of 0.946 g/mL, and a minimum purity of 99%. The molarity may range from 4.23M to 4.27M. This material is soluble in water.
440140
(3-aminopropil)trietoxisilano
99%
(3-Aminopropyl)triethoxysilane
Sinónimos:
3-Trietoxisililpropilamina, APTES, APTS
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Acerca de este artículo
Fórmula lineal:
H2N(CH2)3Si(OC2H5)3
Número CAS:
Peso molecular:
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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Servicio técnico
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Permítanos ayudarleQuality Segment
assay
99%
form
liquid
bp
217 °C/760 mmHg (lit.)
density
0.946 g/mL at 25 °C (lit.)
functional group
silyl
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
General description
(3-Aminopropyl)triethoxysilane (APTES) is a premium, high-purity aminosilane used to deposit stable Self-Assembled Monolayers (SAMs) on silica, metal oxides, and graphene. Its triethoxy structure allows for slower, more controlled hydrolysis compared to methoxysilanes, facilitating the formation of uniform, reproducible molecular layers. Critically for life science research, APTES releases ethanol rather than methanol during silanization, making it the preferred reagent for functionalizing surfaces intended for live-cell interfaces and clinical diagnostics. This 99% high-purity grade is engineered to provide a high density of reactive ethoxy groups for robust covalent anchoring while eliminating the trace impurities that act as charge traps or non-specific binding sites, thereby preventing the critical performance failures in OFETs and nanosensors that standard-grade silanes often cause.
Application
Forma derivados aminopropílicos del vidrio, un adsorbente para la cromatografía de afinidad. Se utiliza para preparar portaobjetos con carga positiva adecuados para emplear en varios procedimientos de inmunohistoquímica y de hibridación in situ. Recientemente, se ha utilizado el (3-aminopropil)trietoxisilano para preparar nanopartículas de sílice dopadas con colorante con agregación mínima y mínima unión inespecífica con biomoléculas.
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Este artículo | |||
|---|---|---|---|
| description 99% | description ≥98.0% | description ≥98% | description packaged for use in deposition systems, ≥98% |
| assay 99% | assay ≥98.0% | assay ≥98% | assay ≥98% |
| form liquid | form liquid | form liquid | form liquid |
| density 0.946 g/mL at 25 °C (lit.) | 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.) |
| bp 217 °C/760 mmHg (lit.) | bp 217 °C/760 mmHg (lit.) | bp 217 °C/760 mmHg (lit.) | bp 217 °C/760 mmHg (lit.) |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 100 |
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Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1
Clase de almacenamiento
8A - Combustible corrosive hazardous materials
wgk
WGK 1
flash_point_f
199.4 °F - closed cup
flash_point_c
93 °C - closed cup
ppe
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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Is Product 440140 dissolved in Acetone?
1 answer-
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
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.pdfHelpful?
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Do you have any indications of what mass proportion I should use so that functionalization occurs between 3-APTES and an inorganic material, such as graphite?
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Typically, a mass proportion of 1-2 wt% of APTES is recommended for effective functionalization. However, please note that APTES may not effectively bind to pristine graphite, and surface modification of the graphite may be necessary to enhance the functionalization process.
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Kann APTES eine dauerhafte chemische Bindung mit der Oberfläche von fused silica eingehen? Falls ja, durch welchen Mechanismus erfolgt die Anbindung an das Siliziumdioxid? Wir möchten es als Haftvermittler für eine CYTOP-Beschichtung verwenden.
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Yes, APTES can bond with fused silica. Fused silica, like silica gel, has hydroxyl (–OH) groups on its surface. When APTES is introduced to the fused silica surface, it undergoes hydrolysis. The ethoxy groups (–OEt) in APTES react with water, forming silanol groups (–Si–OH). The newly formed silanol groups can then react with the hydroxyl groups on the fused silica surface. This reaction leads to the formation of siloxane bonds (–Si–O–Si–), resulting in a covalent attachment of APTES to the fused silica.
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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
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what is the minimum coverage of this silane (m2/g)?
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Unfortunately, there is no information on the minimum coverage of this material. It would depend on the coating method, including solvent, temperature, etc.
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Can this product be used to silanize a surface by using silane deposition via gas-phase evaporation?
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This material has not been tested for use in silane deposition. APTES is referenced in the literature frequently in the vapor phase deposition of biosensors. The suitability would have to be determined experimentally.
Please see the links below to review examples of this process:
https://www.mdpi.com/2079-6374/13/1/36
https://pubs.acs.org/doi/10.1021/acs.langmuir.8b01044Helpful?
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Does this solution have an expiry date?
1 answer-
This product is assigned an expiration date of 2 years from the quality release date. Expiration dates are lot specific and printed on the label as well as the Certificate of Analysis. Please see the link below to review a sample Certificate of Analysis: https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/440140-BULKMKCT8021.pdf
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What is the viscosity of Product 440140, APTES (3-Aminopropyl)triethoxysilane)?
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According to our supplier’s information the viscosity is 1.6 cS.
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What is the refractive index of Product 440140, APTES (3-Aminopropyl)triethoxysilane)?
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According to our supplier the refractive index is 1.420.
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