Description

3-Isocyanatopropyltris(Trimethylsiloxy)Silane is a highly reactive organosilicon compound featuring both an isocyanate group and multiple siloxy functionalities. This dual reactivity makes it a critical coupling agent and precursor for synthesizing advanced hybrid organic-inorganic materials. It is essential for manufacturers in the silicone, coatings, and specialty polymer industries seeking to enhance adhesion, crosslink density, and surface modification properties.

Application

• Silicone Crosslinking Agent: Used as a key component in moisture-curable RTV (Room Temperature Vulcanizing) silicone sealants and adhesives to improve mechanical strength and cure speed.
• Surface Modification & Coupling Agent: Imparts reactive isocyanate groups to inorganic surfaces like silica, glass, or metals, improving the adhesion of polymers, resins, and coatings to these substrates.
• Hybrid Material Synthesis: Serves as a versatile monomer for creating silsesquioxanes (POSS) and other hybrid polymers with tailored thermal and mechanical properties.
• Adhesion Promoter in Coatings: Incorporated into polyurethane, epoxy, and acrylic coating formulations to significantly enhance adhesion to difficult-to-bond surfaces.
• Filler Treatment: Modifies the surface of mineral fillers (e.g., precipitated silica) in rubber and composite applications to improve dispersion and interfacial bonding.
• Pharmaceutical & Biomedical Intermediates: Employed in the synthesis of specialized silane-based carriers, drug delivery systems, and biocompatible materials.

Basic Information

Product Name	3-Isocyanatopropyltris(Trimethylsiloxy)Silane
CAS No.	25357-82-8
Molecular Formula	C13H33NO4Si4
Molecular Weight	403.78 g/mol
Synonyms	Tris(trimethylsiloxy)(3-isocyanatopropyl)silane; 3-Isocyanatopropyltris(trimethylsiloxy)silane; Silane, tris(trimethylsiloxy)-3-isocyanatopropyl-; 3-Isocyanatopropyl-tris(trimethylsiloxy)silane; (3-Isocyanatopropyl)tris(trimethylsiloxy)silane; Isocyanatopropyltris(trimethylsiloxy)silane; γ-Isocyanatopropyltris(trimethylsiloxy)silane; Tris(trimethylsiloxy)silylpropyl isocyanate
EINECS	Contact for details

Quality Control

Our production of 3-Isocyanatopropyltris(Trimethylsiloxy)Silane adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including assay by titration or chromatography and impurity profiling, to ensure consistency and high purity. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15-25°C. This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (by GC or Titration)	≥ 95.0%
Isocyanate Content (NCO%)	Contact for details
Density (at 25°C)	~0.95 g/mL
Refractive Index (n20D)	~1.405

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