Description

Triethoxypropylsilane is a versatile organosilicon coupling agent with the CAS number 2550-02-9. It is a critical intermediate for modifying material surfaces and enhancing the compatibility between inorganic fillers and organic polymer matrices. This compound is essential for manufacturers in the adhesives, sealants, coatings, and advanced composite materials industries seeking to improve product performance and durability.

Application

• As a coupling agent for glass fibers, minerals, and fillers in reinforced plastics and composites.
• Surface modification of silica, alumina, and other inorganic particles to improve dispersion in organic resins.
• A key intermediate in the synthesis of specialty silane-based adhesives and sealants.
• Used as a crosslinking agent or adhesion promoter in silicone, epoxy, and polyurethane coating systems.
• Manufacture of moisture-curable resins and primers for enhanced substrate bonding.
• Surface treatment for pigments and fillers to prevent agglomeration and improve rheology.
• Potential applications in the formulation of release coatings and mold-making materials.

Basic Information

Product Name	Triethoxypropylsilane
CAS No.	2550-02-9
Molecular Formula	C9H22O3Si
Molecular Weight	206.36 g/mol
Synonyms	3-(Triethoxysilyl)propane; 3-Triethoxysilylpropane; Propyltriethoxysilane; Triethoxy(propyl)silane; Triethoxy-3-propanesilanamine; Silane, triethoxypropyl-; γ-Triethoxypropylsilane; (Triethoxysilyl)propane
EINECS	219-858-7

Quality Control

Our Triethoxypropylsilane is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets precise chemical and physical specifications. Certificates of Analysis (COA) detailing all test results are provided to guarantee supply consistency and reliability for your production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to exclude moisture. Keep away from strong alkalis and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.395 - 1.405
Density (20°C)	0.89 - 0.93 g/mL
Water Content (Karl Fischer)	≤ 0.5%

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