(3-Aminopropyl)triethoxysilane

ALDRICH/741442 - ≥98.0%

Synonym: APTS; 3-Triethoxysilylpropylamine; APTES; APTS

CAS Number: 919-30-2
Empirical Formula (Hill Notation): C₉H₂₃NO₃Si
Molecular Weight: 221.37
EC Number: 213-048-4
MDL Number: MFCD00008207
Linear Formula: H₂N(CH₂)₃Si(OC₂H₅)₃
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-741442-100ML	100 mL	$83.70 1/EA	Add To Favorites
45-741442-500ML	500 mL	$288.00 1/EA	Add To Favorites

This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 741442-100ML.

Properties
Descriptions
Safety Info.
Basic Data

assay	≥98.0%
bp	217 °C/760 mmHg (lit.)
color	APHA: ≤25
density	0.929 g/mL at 25 °C
	0.946 g/mL at 25 °C (lit.)
form	liquid
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
Quality Level	100
refractive index	n20/D 1.421
SMILES string	CCO[Si](CCCN)(OCC)OCC

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.
Packaging:	100, 500 mL in glass bottle

Symbol	GHS05,GHS07
Signal word	Danger
Hazard statements	H302 - H314 - H317
Precautionary statements	P261 - P270 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
Hazard Codes	Xn
Risk Statements	22-34-43
Safety Statements	26-36/37/39-45
RIDADR	UN 2735PSN1 8 / PGII
WGK Germany	WGK 1
Flash Point(F)	195.1 °F - closed cup
Flash Point(C)	90.6 °C - closed cup

Purity	≥98.0%
bp	217 °C/760 mmHg (lit.)
Density	0.929 g/mL at 25 °C; 0.946 g/mL at 25 °C (lit.)
Refractive Index	n20/D 1.421
UNSPSC	12352103

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