Description

1,3-Bis(3-Methacryloxypropyl)Tetrakis(Trimethylsiloxy)Disiloxane is a high-purity, multi-functional organosilicon monomer featuring both methacrylate and siloxane groups in its molecular structure. This unique hybrid structure provides exceptional compatibility with organic polymers and imparts valuable properties such as enhanced hydrophobicity, thermal stability, and low surface energy to the final materials. It is a critical raw material for advanced material scientists and formulators in the photopolymer, coating, adhesive, and specialty silicone industries seeking to develop high-performance, cross-linked networks.

Application

• UV-Curable Resins & Coatings: Acts as a reactive diluent and cross-linking agent to enhance flexibility, adhesion, and surface properties in inks, hard coats, and optical fiber coatings.
• Dental & Biomedical Materials: Used in the formulation of light-curable dental composites and restorative materials, contributing to improved mechanical strength and biocompatibility.
• Pressure-Sensitive Adhesives (PSAs): Incorporated to modify the viscoelastic properties, tack, and peel strength of silicone-based and acrylic PSAs.
• Release Liners & Molding: Serves as a key component in silicone release coatings and as a modifier in elastomers for high-temperature molding applications.
• Optical & Electronic Encapsulants: Utilized in formulations for LED encapsulants and protective coatings where optical clarity, thermal stability, and moisture resistance are paramount.
• Surface Modification Additive: Functions as a coupling agent or surface treatment to improve the interfacial adhesion between inorganic fillers and organic polymer matrices.

Basic Information

Product Name	1,3-Bis(3-Methacryloxypropyl)Tetrakis(Trimethylsiloxy)Disiloxane
CAS No.	80722-63-0
Molecular Formula	C26H58O10Si6
Molecular Weight	707.28 g/mol
Synonyms	Bis(3-methacryloxypropyl)tetrakis(trimethylsiloxy)disiloxane; 1,3-Bis(3-methacryloxypropyl)-1,1,3,3-tetrakis(trimethylsiloxy)disiloxane; Methacryloxypropyl-terminated polydimethylsiloxane (specific type); Siloxane methacrylate; Reactive silicone methacrylate; TEGO® RC 711 (potential trade name analogue); Silmer ACR Di-50 (potential trade name analogue); MCR-M17 (potential trade name analogue)
EINECS	Contact for details

Quality Control

Our production of 1,3-Bis(3-Methacryloxypropyl)Tetrakis(Trimethylsiloxy)Disiloxane adheres to a stringent quality management system. Each batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and FTIR, to ensure identity, purity, and consistency meet exacting customer specifications. Certificates of Analysis (COA) detailing all test results are provided with every shipment. We support compliance with REACH, FDA (for indirect food contact applications, where applicable), and other global regulatory frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Keep away from heat sources and incompatible materials such as strong oxidizing agents and initiators. To prevent premature polymerization, it is recommended to store under an inert atmosphere (e.g., nitrogen) and to use appropriate inhibitors as supplied.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 95.0%
Methacrylate Equivalent Weight	~353 g/equiv.
Refractive Index (n20/D)	1.410 - 1.420
Density (25°C)	0.95 - 1.00 g/mL
Viscosity (25°C)	50 - 150 mPa·s
Inhibitor (MEHQ, typical)	50 - 150 ppm

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