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
440213
Triethoxy(octyl)silane
97%
Synonym(s):
Octyltriethoxysilane
Select a Size
| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 100 mL | Available to ship TODAYfromMILWAUKEE | $72.40 | |
| 1 L | Available to ship TODAYfromMILWAUKEE | $194.00 |
About This Item
$72.40
Available to ship TODAYDetails
Quality Level
assay
97%
form
liquid
refractive index
n20/D 1.417 (lit.)
bp
84-85 °C/0.5 mmHg (lit.)
density
0.88 g/mL at 25 °C (lit.)
SMILES string
CCCCCCCC[Si](OCC)(OCC)OCC
InChI
1S/C14H32O3Si/c1-5-9-10-11-12-13-14-18(15-6-2,16-7-3)17-8-4/h5-14H2,1-4H3
InChI key
MSRJTTSHWYDFIU-UHFFFAOYSA-N
General description
Its molecular structure features an 8-carbon octyl chain and three hydrolytically sensitive ethoxy groups. This architecture ensures the formation of stable, covalent siloxane bonds with inorganic substrates while providing a low-energy, hydrophobic surface with water contact angles often exceeding 150°.
In the realm of nanoelectronics, it serves as an essential "hydrophobization" agent, reducing non-specific binding and preventing water-induced charge leakage in sensitive micro-electronic components.
Refined to a 97% high-purity specification, this grade is optimized for consistency in research and industrial processes requiring reliable, reproducible surface functionalization for point-of-care (POC) diagnostics and molecular-scale circuitry.
Application
Semiconductor Passivation: Utilized to form dense, moisture-resistant Self-Assembled Monolayers (SAMs) on inorganic substrates like silicon and glass. These layers provide critical insulation and protection for semiconductor devices against environmental degradation.
Gas-Phase Biosensing: Employed in the fabrication of low-cost colorimetric sensor arrays. It stabilizes the porosity of sensor substrates, enabling rapid color changes for the real-time detection of toxic gases.
Biomolecule Immobilization: Used in the production of organically modified silane (Ormosil) nanoparticles. These nanostructures can encapsulate enzymes like horseradish peroxidase (HRP), preserving their activity for high-sensitivity biochemical assays.
Micro-patterning & Adhesion: Acts as an adhesion promoter between organic resins and inorganic micro-electrode arrays. Its ability to modulate surface energy is critical for the reliable performance of printed circuit boards (PCBs) and flexible bio-interfaces.
1 of 1
This Item | |||
|---|---|---|---|
| assay 97% | assay 97%, 99.99% trace metals basis | assay 96% | assay - |
| form liquid | form liquid | form liquid | form liquid |
| density 0.88 g/mL at 25 °C (lit.) | density 0.88 g/mL at 25 °C (lit.) | density 0.907 g/mL at 25 °C (lit.) | density 0.883 g/mL at 25 °C (lit.) |
| refractive index n20/D 1.417 (lit.) | refractive index n20/D 1.417 (lit.) | refractive index n20/D 1.416 (lit.) | refractive index n20/D 1.439 (lit.) |
| bp 84-85 °C/0.5 mmHg (lit.) | bp 84-85 °C/0.5 mmHg (lit.) | bp - | bp - |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
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signalword
Warning
hcodes
Hazard Classifications
Skin Irrit. 2
Storage Class
10 - Combustible liquids
wgk
WGK 1
flash_point_f
212.0 °F - closed cup
flash_point_c
100 °C - closed cup
ppe
Eyeshields, Gloves, type ABEK (EN14387) respirator filter
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Articles
Explore self-assembled monolayers for advanced surface engineering in electronics, biomedicine, and nanocomposites.
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 440213-1L | 04061832253152 |
| 440213-100ML | 04061832253145 |
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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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