Description

3-(Trimethoxysilyl)Propionaldehyde Dimethyl Acetal is a versatile organosilicon compound featuring both a protected aldehyde group and hydrolyzable methoxysilane functionalities. This dual reactivity makes it a highly valuable bifunctional coupling agent and precursor in advanced material synthesis. It is primarily sought after by manufacturers in the adhesives, sealants, coatings, and specialty polymer industries for its ability to enhance adhesion and modify surface properties.

Application

• As a key silane coupling agent to improve the adhesion of polymers (e.g., polyurethanes, epoxies) to inorganic surfaces like glass, metals, and minerals.
• As a surface modifying agent in coatings and paints to impart hydrophobicity, improve scratch resistance, and enhance weatherability.
• As a reactive intermediate in the synthesis of more complex organosilicon molecules and functionalized polymers.
• In the formulation of moisture-curable adhesives and sealants, where it acts as a crosslinker and adhesion promoter.
• For the surface treatment of fillers and nanoparticles (e.g., silica, glass fibers) to improve their compatibility and dispersion in organic matrices.
• In the production of specialty silicones and hybrid organic-inorganic materials (ORMOSILs) with tailored properties.

Basic Information

Product Name	3-(Trimethoxysilyl)Propionaldehyde Dimethyl Acetal
CAS No.	25760-57-0
Molecular Formula	C9H22O5Si
Molecular Weight	238.36 g/mol
Synonyms	3,3-Dimethoxypropyltrimethoxysilane; (3,3-Dimethoxypropyl)trimethoxysilane; Trimethoxy[3-(dimethoxymethyl)propyl]silane; 3-(Trimethoxysilyl)-1-propanal dimethyl acetal; Propionaldehyde, 3-(trimethoxysilyl)-, dimethyl acetal; Silane, trimethoxy[3-(dimethoxymethyl)propyl]-; SIB1822.0 (Gelest)
EINECS	247-213-4

Quality Control

Our production of 3-(Trimethoxysilyl)Propionaldehyde Dimethyl Acetal adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including GC, NMR, and FTIR, to verify identity, purity, and consistency. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to ensure full traceability and compliance with your material 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 material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis and maintain product integrity. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Refractive Index (n20D)	1.410 - 1.415
Density (g/mL, 25°C)	1.010 - 1.030

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