Description

1,3-Bis(3-Trichlorosilylpropoxy)-2-Decyloxypropane is a specialized organosilicon compound featuring a unique branched structure with multiple reactive trichlorosilyl groups. This molecular architecture makes it a highly effective coupling agent and surface modifier, crucial for creating strong, durable interfaces between organic polymers and inorganic substrates. It is essential for manufacturers and R&D chemists in advanced materials science seeking to enhance composite performance, adhesion, and material compatibility. The compound is identified by CAS No. 862912-02-5.

Application

• Silane Coupling Agent: Primarily used to improve the adhesion and compatibility between organic resins (epoxy, polyurethane) and inorganic fillers (glass, minerals, metals) in composite materials.
• Surface Treatment for Fillers: Modifies the surface of silica, alumina, and other mineral fillers to improve dispersion in polymer matrices and enhance mechanical properties.
• Adhesion Promoter in Coatings & Sealants: Incorporated into primers and formulations to significantly boost adhesion to difficult substrates like glass, metals, and painted surfaces.
• Fiberglass Sizing Agent: Used in the treatment of glass fibers for reinforced plastics (GRP), improving the fiber-matrix interfacial bond strength and composite durability.
• Rubber Reinforcement: Acts as a key ingredient in the production of silica-reinforced "green tire" compounds, reducing rolling resistance and improving fuel efficiency.
• Hydrophobic Surface Modification: Imparts water-repellent properties to surfaces and materials for protective coatings and specialized textiles.
• Crosslinking Agent: Serves as a reactive intermediate in the synthesis of specialty silicone polymers and hybrid organic-inorganic networks (ORMOSILs).
• Electronics & Encapsulation: Used in electronic potting compounds and encapsulants to improve adhesion and environmental protection for sensitive components.

Basic Information

Item	Detail
Product Name	1,3-Bis(3-Trichlorosilylpropoxy)-2-Decyloxypropane
CAS No.	862912-02-5
Molecular Formula	C22H44Cl6O3Si2
Molecular Weight	644.51 g/mol
Synonyms	2-Decyloxy-1,3-bis(3-trichlorosilylpropoxy)propane; 1,3-Bis(3-(trichlorosilyl)propoxy)-2-decyloxypropane; Bis(trichlorosilylpropyl) decyloxypropane ether; Silane coupling agent Si-69 derivative; Branched trichlorosilane; Organosilane crosslinker; Decyloxy-bis(trichlorosilylpropoxy)propane
EINECS	Contact for details

Quality Control

Our production of 1,3-Bis(3-Trichlorosilylpropoxy)-2-Decyloxypropane adheres to a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analysis, including assay by titration, determination of hydrolyzable chloride content, and verification of identity and structure. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 95.0%
Hydrolyzable Chloride	≥ 32.0%
Density (25°C)	1.20 - 1.25 g/cm³
Refractive Index (n20D)	1.460 - 1.470

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