Description

Colorless Transparent Liquid CAS NO 2677-24-9 is a versatile and reactive organosilicon compound, primarily known as 3-Aminopropyltriethoxysilane (APTES). Its core value proposition lies in its dual functionality, featuring both a hydrolyzable ethoxy group and a primary amine group, making it an exceptional coupling agent and surface modifier. This product is essential for industries requiring enhanced adhesion, compatibility, and performance between organic polymers and inorganic substrates. Key sectors that rely on this material include advanced composites, coatings, adhesives, and electronics manufacturing.

Application

• As a silane coupling agent to improve the bond strength and durability of fiberglass-reinforced plastics, mineral-filled composites, and tire cord-to-rubber adhesion.
• As a surface primer or treatment for glass, metals, and silica to promote paint, ink, and coating adhesion while providing corrosion resistance.
• In the formulation of moisture-curable sealants, adhesives, and resins, where it acts as a crosslinker and adhesion promoter.
• For the functionalization of nanoparticles (e.g., silica, quantum dots) and biomaterials to introduce amine groups for further chemical grafting in drug delivery and diagnostics.
• As a key intermediate in the synthesis of specialty silicones and modified polymers for release coatings and membrane technologies.
• In the electronics industry for die attach adhesives, epoxy molding compounds, and as a surface modifier for semiconductors.

Basic Information

Product Name	Colorless Transparent Liquid CAS NO 2677-24-9
CAS No.	2677-24-9
Molecular Formula	C9H23NO3Si
Molecular Weight	221.37 g/mol
Synonyms	3-Aminopropyltriethoxysilane; APTES; (3-Aminopropyl)triethoxysilane; Triethoxy(3-aminopropyl)silane; γ-Aminopropyltriethoxysilane; A 1100; KH-550; Silane A-1100; 3-Triethoxysilylpropylamine; 3-APTES; Aminoethylaminopropyltrimethoxysilane (related); Aminosilane
EINECS	220-222-8

Quality Control

Our production of 3-Aminopropyltriethoxysilane adheres to stringent quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and assay, to ensure consistency and compliance with industry specifications. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). This product is hygroscopic (moisture-sensitive) and highly volatile. Keep away from heat, sparks, open flames, and strong oxidizing agents. Use under inert atmosphere (e.g., nitrogen) for extended storage or after opening to maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow transparent liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Refractive Index (n20D)	1.420 - 1.425
Density (g/mL, 20°C)	0.940 - 0.950
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.