Description

(N,n-Diethyl-3-Aminopropyl)Trimethoxysilane is a bifunctional organosilane coupling agent featuring both an amino and an alkoxysilane group. This dual functionality is critical for creating strong, durable bonds between inorganic materials and organic polymers or resins. It is an essential raw material for formulators and manufacturers seeking to enhance composite material performance, adhesion, and surface modification. Key industries that rely on this silane include advanced composites, coatings, adhesives, and sealants.

Application

• As a coupling agent in glass fiber-reinforced plastics (GRP) and mineral-filled composites to improve mechanical strength and moisture resistance.
• As an adhesion promoter in epoxy, polyurethane, and acrylic-based coatings and adhesives for metals, glass, and plastics.
• For surface pretreatment and priming of substrates to enhance paint, ink, and coating adhesion and durability.
• As a crosslinking agent or modifier in silicone resins and RTV (Room Temperature Vulcanizing) silicone elastomers.
• In the formulation of moisture-curable sealants and primers for construction and automotive applications.
• As a surface treatment agent for silica, talc, and other fillers to improve dispersion and compatibility in polymer matrices.

Basic Information

Product Name	(N,n-Diethyl-3-Aminopropyl)Trimethoxysilane
CAS No.	41051-80-3
Molecular Formula	C10H25NO3Si
Molecular Weight	235.40 g/mol
Synonyms	3-(Diethylamino)propyltrimethoxysilane; N,N-Diethyl-3-aminopropyltrimethoxysilane; Diethylaminopropyltrimethoxysilane; DEAPTMS; (3-(Diethylamino)propyl)trimethoxysilane; N-(3-Trimethoxysilylpropyl)diethylamine; Silane, (3-(diethylamino)propyl)trimethoxy-; Amino silane coupling agent KH-792 analog
EINECS	255-210-0

Quality Control

Our (N,n-Diethyl-3-Aminopropyl)Trimethoxysilane is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including assay, purity, and identity confirmation, to ensure it meets precise specifications and consistent performance for your applications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent degradation from atmospheric moisture. Keep away from heat and incompatible materials such as strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.420 - 1.430
Density (20°C)	0.920 - 0.950 g/mL

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