Description

Acetoxyethyl Trimethoxysilane is a versatile organosilicon coupling agent and monomer. This compound is particularly valued for its dual functionality, combining a hydrolyzable trimethoxysilyl group with an acetoxyethyl moiety, enabling strong adhesion and cross-linking in polymer matrices. It is essential for manufacturers in the adhesives, sealants, coatings, and advanced composite materials industries seeking to enhance material compatibility, durability, and performance.

Application

• As a key adhesion promoter and coupling agent in silicone sealants and adhesives.
• Surface modification of inorganic fillers (e.g., silica, glass fibers) for improved dispersion and bonding in polymer composites.
• Cross-linking agent and monomer in the synthesis of specialty silicone resins and polymers.
• Primer or additive in protective and decorative coatings to improve substrate wetting and adhesion.
• Intermediate in the production of other functional silanes and advanced organosilicon materials.
• Used in the formulation of moisture-curable systems and release coatings.

Basic Information

Product Name	Acetoxyethyl Trimethoxysilane
CAS No.	72878-29-6
Molecular Formula	C9H20O6Si
Molecular Weight	252.34 g/mol
Synonyms	2-(Trimethoxysilyl)ethyl acetate; (Acetoxyethyl)trimethoxysilane; 2-Acetoxyethyltrimethoxysilane; Trimethoxy(2-acetoxyethyl)silane; Silane, trimethoxy[2-(acetyloxy)ethyl]-; 3-(Acetoxy)propyltrimethoxysilane (common misnomer); AETMS; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our Acetoxyethyl Trimethoxysilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC, purity verification, and control of key impurities, to ensure it meets precise customer and industry specifications. A Certificate of Analysis (COA) documenting these results is provided with every shipment.

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 material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	~1.07 g/cm³
Refractive Index (n20D)	~1.405

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