3-Aminopropyltrimethoxysilane

Chemical Name:	3-Aminopropyltrimethoxysilane
Alias:	γ-Aminopropyl Trimethoxysilane
Product Category:	Amino Silanes \| Silane Coupling Agent
Structural Formula:
CAS NO.:	13822-56-5
Molecular formula:	C6H17NO3Si
EINECS:	237-511-5
Molecular Weight:	221.14500

3-Aminopropyltrimethoxysilane Description

3-Aminopropyltrimethoxysilane (CAS 13822-56-5) is a functional silane with amino and methoxy groups. The amino group reacts with various organic resins, including epoxy, acrylic, and phenolic polymers. The trimethoxy group allows it to hydrolyze quickly, improving bonding to inorganic substrates with enhanced wettability and compatibility. It is equivalent to Momentive Silquest A-1110 and Dynasylan AMMO.

Product Name	3-Acryloxypropyltrimethoxy silane
Equivalent Product Name	Momentive A-1110, Dow Corning Z-6094, Wacker GENIOSIL GF96, Degussa AMMO, ShinEtsu KBM-903.
Equivalent Chemical Name	3-(Trimethoxysilyl) -1-propanamine; 3-Aminopropy ltrimethoxysilane; (3-Aminopropyl) trimethoxysilane; (3-Aminopropyl) trimethoxysilane;
Physical Properties	Colorless to yellowish transparent liquid.
Chemical Properties	Silane Coupling Agent RS-A111 (3-Aminopropyl)ethoxysilane (APTES) is used as an aminosilane, mainly as a dispersing agent. APTES attaches amino groups to functional silanes for bioconjugation.
Appearance	Colorless to yellowish transparent liquid
Refractive index(n25D)	1.4165~1.4265
Density(25°C),g / cm³	1.010-1.020
Boiling Point	91-92°C/15mmHg
Flash Point	87°C
Dissolvability	Be soluble in benzene and ethyl acetate. It can react with water.
Purity	98%
Benefits	Improved adhesion Increased wet and dry tensile strength and modulus to the composite Increased wet and dry flexural strength and modulus to the composite Increased wet and dry compressive strength Improved compatibility between inorganic filler and organic polymer
Uses	Surface Modifier: Enhances adhesion between organic resins and inorganic substrates, including inorganic fillers and glass fibers. Coatings & Sealants: Used as a primer or additive to improve performance in coatings and sealants. SPUR Polymer: Acts as an adhesion promoter in silane-modified polyurethane (SPUR polymer). Metal Surface Treatment: Serves as a surface protector and adhesion promoter for the preparation of silylation surface treatment agents for metals.
Hazardous	NOT
Transportation & Safety info	UN No.: N.A Transport hazard class(es) : N.A Packing group: N.A
Packaging	Our standard packing is net 25kg / 200 kg drums / 1000kg/IBC，or according to your requirements.
Sample	Provided for free
Inventory items	13 tons
Price	Please contact us to get the new price.

Packaging Specifications

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3-Aminopropyltrimethoxysilane: Guide

A colorless liquid with an amine group and hydrolyzable methoxy group, enhancing adhesion between organic resins and inorganic substrates. Soluble in alcohols and hydrocarbons, it improves bonding in coatings, sealants, and polyurethanes.

Applications:

✔ Surface Modifier – Enhances bonding with fillers and glass fibers.
✔ Adhesion Promoter – Used in SPUR polymers, coatings, and sealants.
✔ Metal Protection – Creates hydrophobic, durable coatings.