Description

Tri-n-Propylmethoxysilane is a versatile organosilicon compound widely used as a key coupling agent and surface modifier. Its molecular structure enables it to form stable bonds between inorganic materials and organic polymers, enhancing composite performance. This chemical is essential for manufacturers in the coatings, adhesives, and advanced materials sectors seeking to improve adhesion, dispersion, and durability.

Application

• Surface Treatment Agent: Primarily used to modify the surface of silica, glass fibers, and other inorganic fillers to improve compatibility and dispersion in polymer matrices like epoxy, silicone, and polyurethane.
• Adhesion Promoter: Enhances the bond strength and moisture resistance in sealants, adhesives, and coating systems, particularly on metallic or mineral substrates.
• Crosslinking Agent/Intermediate: Serves as a reactive intermediate in the synthesis of more complex silane-based compounds and as a crosslinker in silicone polymer formulations.
• Composite Material Manufacturing: Improves the mechanical properties and interfacial bonding in fiber-reinforced plastics (FRP) and mineral-filled composites.
• Hydrophobic Coating Formulations: Imparts water-repellent properties to surfaces in construction materials, protective coatings, and electronic components.
• Rubber & Tire Industry: Used as a coupling agent in silica-filled rubber compounds to reduce rolling resistance and improve wet grip in tire manufacturing.

Basic Information

Product Name	Tri-n-Propylmethoxysilane
CAS No.	17841-46-2
Molecular Formula	C10H24O1Si1
Molecular Weight	188.39 g/mol
Synonyms	Methoxy(tripropyl)silane; Tripropylmethoxysilane; Tripropylsilyl methyl ether; (Tripropylsilyl)methanol; Silane, methoxytripropyl-; NSC 163090; Methoxy-tri-n-propylsilane; Tri-n-propylsilyl methyl ether
EINECS	241-806-5

Quality Control

Our Tri-n-Propylmethoxysilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee consistency and support your quality assurance protocols.

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). Due to its hygroscopic and highly volatile nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after initial opening to prevent moisture absorption and degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.418 - 1.422
Density (g/mL, 20°C)	0.85 - 0.87
Water Content (KF)	≤ 0.1%

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