Description

Silquest A 2639 is a specialized organosilane coupling agent, identified by CAS No. 156849-43-3. This compound is engineered to enhance the adhesion and compatibility between inorganic materials and organic polymers, a critical function in advanced material science. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in the production of high-performance composites and surface treatments.

Application

• As a key adhesion promoter in industrial coatings and primers for metals, glass, and plastics.
• To improve the mechanical properties and moisture resistance of fiber-reinforced polymer composites.
• As a surface modifier for fillers and pigments to enhance dispersion and stability in polymer matrices.
• In the formulation of high-performance silicone sealants and adhesives for construction and automotive applications.
• For the surface treatment of glass fibers and minerals to optimize bonding in thermoset and thermoplastic composites.
• As a crosslinking agent or co-monomer in the synthesis of specialty silicone polymers and resins.

Basic Information

Product Name	Silquest A 2639
CAS No.	156849-43-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	3-(2-Aminoethylamino)propyltrimethoxysilane; N-(2-Aminoethyl)-3-aminopropyltrimethoxysilane; A 2639; Silane A 2639; Aminoethylaminopropyltrimethoxysilane; AEAPTMS; Dow Corning Z-6020 (equivalent); Dynasylan DAMO; KH-792; γ-(2-Aminoethyl)aminopropyltrimethoxysilane
EINECS	Contact for details

Quality Control

Our Silquest A 2639 is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. Certificates of Analysis (COA) documenting purity, assay, and other critical parameters are available upon request to support your quality assurance protocols.

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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under a dry, inert atmosphere to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay	≥ 97.0%
Refractive Index (n20/D)	1.440 - 1.445
Density (g/mL, 25°C)	1.020 - 1.030

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