Description

Acetoxypropyltrimethoxysilane is a versatile organosilicon coupling agent and intermediate, recognized for its unique bifunctional structure. This compound is essential for enhancing adhesion, compatibility, and durability in composite materials and surface treatments. It is particularly valuable for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producers of specialty polymers and inorganic fillers.

Application

• As a key adhesion promoter in primers and coatings for metals, glass, and mineral surfaces.
• To improve the dispersion and bonding of inorganic fillers (e.g., silica, glass fibers) in polymer composites and rubber formulations.
• As a crosslinking agent or co-monomer in the synthesis of moisture-curable silicone polymers and hybrid organic-inorganic materials.
• For surface modification of nanoparticles to enhance compatibility with organic matrices.
• In the production of sealants and adhesives requiring excellent weather resistance and bond strength.
• As an intermediate in the manufacture of more complex silane derivatives for specialized applications.

Basic Information

Item	Detail
Product Name	Acetoxypropyltrimethoxysilane
CAS No.	59004-18-1
Molecular Formula	C8H18O5Si
Molecular Weight	222.31 g/mol
Synonyms	3-(Trimethoxysilyl)propyl acetate; (3-Acetoxypropyl)trimethoxysilane; Acetoxypropyltrimethoxysilane; Trimethoxy(3-oxo-3-propoxy)silane; Silane, trimethoxy[3-(acetyloxy)propyl]-; A 174 (historical trade name variant); γ-Acetoxypropyltrimethoxysilane
EINECS	261-588-8

Quality Control

Our Acetoxypropyltrimethoxysilane is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, identity, and key parameters is provided with every shipment to guarantee traceability and compliance with your technical requirements.

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 maintain product integrity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	1.00 - 1.05 g/cm³
Refractive Index (n20/D)	1.405 - 1.415

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