Description

3-Chloropropyltris(Trimethylsiloxy)Silane is a highly versatile organosilicon compound that serves as a critical coupling agent and intermediate in advanced material synthesis. Its unique structure, featuring both a reactive chloropropyl group and hydrolyzable siloxy functionalities, enables it to bridge organic and inorganic phases, enhancing adhesion, dispersion, and material compatibility. This chemical is essential for manufacturers in the silicone rubber, specialty coatings, and advanced composite industries seeking to improve product performance and durability.

Application

• As a key coupling agent and crosslinker in the production of high-performance silicone elastomers and RTV (Room Temperature Vulcanizing) sealants.
• As a surface modifying agent for inorganic fillers (e.g., silica, glass fibers) to improve their compatibility and dispersion within polymer matrices like epoxy, polyurethane, and silicone.
• As a crucial intermediate in the synthesis of more complex functional silanes used in adhesion promoters for coatings, inks, and adhesives on difficult substrates.
• In the formulation of moisture-curable systems, where it acts as a crosslinking agent contributing to network formation and final material properties.
• For the surface treatment of nanoparticles to prevent agglomeration and enable their use in advanced composite materials and electronic applications.
• In research and development for creating novel hybrid organic-inorganic materials with tailored mechanical, thermal, or optical characteristics.

Basic Information

Product Name	3-Chloropropyltris(Trimethylsiloxy)Silane
CAS No.	18077-31-1
Molecular Formula	C12H31ClO3Si4
Molecular Weight	355.16 g/mol
Synonyms	(3-Chloropropyl)tris(trimethylsiloxy)silane; Tris(trimethylsiloxy)(3-chloropropyl)silane; 3-Chloropropyltris(trimethylsiloxy)silane; Silane, (3-chloropropyl)tris(trimethylsiloxy)-; Chloropropyltris(trimethylsiloxy)silane; CPTS; (γ-Chloropropyl)tris(trimethylsiloxy)silane; Tris(trimethylsilyloxy)(3-chloropropyl)silane
EINECS	Contact for details

Quality Control

Our production of 3-Chloropropyltris(Trimethylsiloxy)Silane adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay (by GC or titration), identity confirmation (IR), and control of key impurities. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory needs.

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 (moisture-sensitive) nature, containers must be kept tightly sealed when not in use to prevent degradation from atmospheric moisture. Keep away from incompatible materials such as strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Chlorine Content	9.5 - 10.5 %
Refractive Index (n20D)	1.405 - 1.415
Density (20°C)	0.95 - 0.99 g/cm³

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