Description

Siloxanes And Silicones, Di-Me, (3-Mercaptopropyl)Silylidynetris- is a specialized organosilicon compound featuring a mercaptopropyl functional group, making it a valuable cross-linking agent and reactive intermediate. This compound is essential for introducing sulfur-based functionality into polymer matrices, enabling enhanced adhesion, flexibility, and chemical resistance. It is primarily sought by manufacturers in the adhesives, sealants, coatings, and specialty elastomer industries for formulating high-performance materials.

Application

• Adhesive & Sealant Formulation: Acts as a key cross-linker and adhesion promoter in silicone-based adhesives and sealants, improving bond strength to various substrates.
• Coatings & Resins: Used as a reactive modifier in coatings to enhance flexibility, weather resistance, and surface adhesion properties.
• Elastomer Production: Serves as a cross-linking agent in the manufacture of specialty silicone rubbers and elastomers, contributing to their mechanical properties.
• Surface Modification: Utilized to functionalize surfaces (e.g., glass, metals, fillers) with thiol groups for subsequent chemical grafting or to improve compatibility.
• Polymer Synthesis: Employed as a chain transfer agent or functional monomer in the synthesis of custom polysiloxanes and hybrid organic-inorganic polymers.
• Optical & Electronic Materials: Finds application in the formulation of optical encapsulants and protective coatings for electronic components due to its stable siloxane backbone.

Basic Information

Product Name	Siloxanes And Silicones, Di-Me, (3-Mercaptopropyl)Silylidynetris-
CAS No.	67923-16-4
Molecular Formula	C15H42O6S3Si4
Molecular Weight	506.98 g/mol
Synonyms	Tris(3-mercaptopropyl)trimethoxysilane; 3-Mercaptopropyltrimethoxysilane trimer; 1,1,1-Trimethoxy-3,3,3-tris(3-mercaptopropyl)trisiloxane; (3-Mercaptopropyl)silylidynetrisoxytrimethylsilane; Mercaptopropyl POSS derivative; Thiol-functionalized siloxane; SH-POSS; Tris[(3-mercaptopropyl)dimethylsiloxy]methylsilane
EINECS	Contact for details

Quality Control

Our production of Siloxanes And Silicones, Di-Me, (3-Mercaptopropyl)Silylidynetris- adheres to stringent quality protocols to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay, purity verification, and functional group analysis. Certificates of Analysis (COA) documenting all critical parameters 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 room temperature (15-25°C). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve its thiol functionality. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0%
Thiol Content	≥ 5.8 mmol/g
Refractive Index (n20D)	1.460 - 1.470
Density (20°C)	1.05 - 1.15 g/cm³

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