Description

m-Aminophenyltrimethoxysilane is a bifunctional organosilane coupling agent featuring both an aromatic amine group and hydrolyzable methoxysilyl groups. This unique structure makes it a critical component for enhancing adhesion and compatibility between organic polymers and inorganic substrates. It is essential for manufacturers in the composites, coatings, and electronics industries seeking to improve material performance and durability. Its primary value lies in its ability to form strong covalent bonds at interfaces, significantly boosting mechanical properties and environmental resistance.

Application

• Coupling Agent for Fiber-Reinforced Composites: Used to treat glass, carbon, or aramid fibers to improve the interfacial bond with epoxy, phenolic, or polyimide resins, resulting in composites with higher strength and moisture resistance.
• Surface Primer for Metals and Glass: Applied as an adhesion promoter in protective coatings, paints, and adhesives on aluminum, steel, and glass surfaces to enhance durability and corrosion protection.
• Modifier for Silicone and Engineering Polymers: Incorporated into silicone rubbers, polyamides, or other polymers to introduce reactive amine sites for further crosslinking or to improve compatibility with fillers.
• Intermediate for Specialty Chemical Synthesis: Serves as a key building block in the production of advanced silanes, dendrimers, and other functionalized materials for research and high-tech applications.
• Adhesion Promoter in Electronic Encapsulants: Used in epoxy molding compounds and potting materials to improve adhesion to lead frames, chips, and substrates, enhancing device reliability.

Basic Information

Product Name	m-Aminophenyltrimethoxysilane
CAS No.	33976-43-1
Molecular Formula	C9H15NO3Si
Molecular Weight	213.31 g/mol
Synonyms	3-Aminophenyltrimethoxysilane; (3-Aminophenyl)trimethoxysilane; m-APTS; 3-(Trimethoxysilyl)aniline; Silane, (3-aminophenyl)trimethoxy-; Aniline, 3-(trimethoxysilyl)-; Amino Phenyl Trimethoxy Silane; A 0700 (common trade designation)
EINECS	Contact for details

Quality Control

Our m-Aminophenyltrimethoxysilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay and impurity profiling, to ensure it meets precise specifications for industrial and research applications. Certificates of Analysis (COA) documenting purity, identity, and key physical properties are available upon request to support your quality assurance and regulatory needs.

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 (e.g., nitrogen) to prevent hydrolysis and degradation upon contact with atmospheric moisture.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms
Assay (GC or HPLC)	≥ 97.0%
Refractive Index (n20/D)	1.490 - 1.500
Density (g/mL, 20°C)	1.070 - 1.090

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